Medium-Voltage SwitchgearCircuit-Breaker Switchgear Type NXAIR: Factory-Assembled, Type-Tested and Metal-
Enclosed Switchgear for Indoor Installation, Air-Insulated
Loss of Service Continuity Category: LSC 2B (Metal-Clad)
Partition Class PM (Metallic Partition)
Internal Arc Classification: IAC A FLR, ISC = 31.5 kA, t = 1s Arc Duration
Medium-Voltage
Switchgear
OPERATING
INSTRUCTIONS
Order No.: 110-0134.9
8BX3300-0LA00-0AB1
Revision: 02
Issue: 31.03.2010
2 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
About these Instructions
These instructions do not purport to cover all details or
variations in equipment, nor to provide for every possible
contingency to be met in connection with operation.
For details about technical design and equipment like
e.g. technical data, secondary equipment, circuit
diagrams, please refer to the order documents.
The switchgear is subject to continuous technical
development within the scope of technical progress. If
not stated otherwise on the individual pages of these
instructions, we reserve the right to modify the specified
values and drawings. All dimensions are given in mm.
For further details, e.g. about additional equipment,
please refer to catalog HA 25.71.
Should further information be desired or should
particular problems arise which are not covered
sufficiently by these instructions, the matter should be
referred to the competent Siemens department.
The contents of this instruction manual shall not become
part of or modify any prior or existing agreement,
commitment or relationship. The Sales Contract
contains the entire obligations of Siemens. The warranty
contained in the contract between the parties is the sole
warranty of Siemens. Any statements contained herein
do not create new warranties or modify the existing
warranty.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 3
Contents
Safety instructions............................................................................4
1 Signal terms and definitions................................ 4
2 General instructions ............................................ 4
3 Due application.................................................... 5
4 Qualified personnel ............................................. 5
Description.........................................................................................6
5 Features .............................................................. 6
6 Panel types.......................................................... 7
6.1 Circuit-breaker panel ........................................... 7
6.2 Disconnecting panel............................................ 8
6.3 Metering panel .................................................... 8
6.4 Bus sectionalizer ................................................. 8
6.5 Contactor panel ................................................... 9
7 Panel design.......................................................10
8 Interlocks............................................................12
9 Accessories........................................................13
10 Technical data.....................................................14
10.1 Complete switchgear .........................................14
10.2 Operating conditions ..........................................17
10.3 Vacuum circuit-breaker type 3AE .......................17
10.4 Contactor type 3TL6 ..........................................18
10.5 Operating instructions for circuit-breaker
type 3AE and contactor type 3TL6.....................18
11 Service information ........................................... 20
11.1 Maintenance ..................................................... 20
11.2 Visual inspection ............................................... 21
11.3 Preventive maintenance .................................... 22
11.4 Switchgear extension........................................ 24
11.5 Spare part orders............................................... 24
11.6 Replacement of panels and components.......... 25
11.7 Disposal............................................................. 25
Operation NXAIR.............................................................................26
12 Safety instructions............................................. 26
13 Panel operation ................................................. 27
13.1 Control elements at the front side of
the panel ........................................................... 27
13.2 Operating tools.................................................. 29
13.3 Opening and closing the high-voltage door....... 32
13.4 Racking the withdrawable circuit-breaker to
service position..................................................36
13.5 Racking the withdrawable circuit-breaker to test
position ..............................................................40
13.6 Racking the withdrawable contactor to service
position ..............................................................44
13.7 Racking the withdrawable contactor to test
position ..............................................................47
13.8 Closing the circuit-breaker .................................49
13.9 Opening the circuit-breaker................................51
13.10 Charging the spring manually ............................53
13.11 Closing or opening the contactor.......................55
13.12 Feeder earthing..................................................56
13.13 Feeder de-earthing.............................................59
13.14 Busbar earthing..................................................61
13.15 Busbar de-earthing.............................................64
13.16 Access to connection compartment..................67
13.17 Taking the withdrawable circuit-breaker,
disconnector link and/or withdrawable
metering unit out of the panel ........................... 71
13.18 Inserting the withdrawable circuit-breaker
and/or disconnector link in a panel.....................75
13.19 Taking the withdrawable contactor out of the
panel ..................................................................81
13.20 Inserting the withdrawable contactor in
the panel ............................................................83
13.21 Emergency operation of the feeder earthing
switch without the withdrawable circuit-breaker
inserted in the panel ..........................................87
13.22 Verification of safe isolation from supply ...........88
13.23 Connecting earthing and short-circuit facility .....91
13.24 Manual operation of shutters in circuit-breaker and
disconnecting panels .........................................92
13.25 Manual operation of shutters in the contactor
panel ..................................................................96
13.26 Application of HV HRC fuse-links..................... 101
13.27 Normal current of the HV HRC fuse-links ........ 105
13.28 Motor starting currents.................................... 106
13.29 Coordinating the components of the motor
circuit ............................................................... 107
13.30 Key-operated interlocking with Ronis® locks... 108
14 Trouble shooting .............................................. 112
Index .............................................................................................113
Safety instructions
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Safety instructions
1 Signal terms and definitions
Symbols used Operation symbol: Identifies an operation. Asks the operator to perform an
operation.
r Result symbol: Identifies the result of an operation.
2 General instructions
Independently of the safety instructions given in these operating instructions, the local
laws, ordinances, guidelines and standards for operation of electrical equipment as well
as for labor, health and environmental protection apply.
Any kind of modification on the product or alteration of the product must be coordinated
with the manufacturer in advance, as uncoordinated modifications or alterations can
cause the expiration of warranty claims, cause danger to life, limb and other legally
protected interests, and the fulfillment of the type tests (according to IEC 62271-200)
may not be guaranteed anymore.
The edition of the standard is only mentioned in the test report applicable at the time of
switchgear manufacture.
Five Safety Rules ofElectrical Engineering
The Five Safety Rules of Electrical Engineering must generally be observed during
operation of the products and components described in these operating instructions:
• Isolate.
• Secure against reclosing.
• Verify safe isolation from supply.
• Earth and short-circuit.
• Cover or barrier adjacent live parts.
DANGER!
as used in these instructions, this means that personal injuries can occur if the relevant
precautionary measures are not taken.
Observe the safety instructions.
ATTENTION!
as used in these instructions, this means that damage to property or environment can
occur if the relevant precautionary measures are not taken.
Observe the safety instructions.
NOTE!
as used in these instructions, this points at facilitations of work, particularities for
operation or possible maloperation.
Observe the notes.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 5
Safety instructions
3 Due application
The switchgear corresponds to the relevant laws, prescriptions and standards applicable
at the time of delivery. If correctly used, they provide a high degree of safety by means
of logical mechanical interlocks and shockproof metal enclosure of live parts.
4 Qualified personnel
Qualified personnel in accordance with these instructions are persons who are familiar
with maintenance and operation of the product and have appropriate qualifications for
their work.
Furthermore, qualified personnel must have the following training and instruction or
authorization:
• Training and instruction or authorization to switch on, switch off, earth and identify
power circuits and equipment / systems as per the relevant safety standards
• Training and instruction regarding the applicable specifications for the prevention of
accidents and the care and use of appropriate safety equipment
• Training in first aid and behavior in the event of possible accidents
DANGER!
The perfect and safe operation of this switchgear is conditional on:
Observance of operating and installation instructions.
Qualified personnel.
Proper transportation and correct storage of the switchgear.
Correct installation and commissioning.
Diligent operation and maintenance.
Observance of the instructions applicable at site for installation, operation and
safety.
Description
6 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Description
5 Features
The withdrawable circuit-breaker and contactor switchgear types NXAIR have the
following features:
• Factory-assembled, type-tested, metal-enclosed and metal-clad switchgear for indoor
installation according to IEC 62271-200 / VDE 0671-200
• Loss of service continuity category: LSC 2B (metal-clad)
• Partition class PM (metallic partition)
• Internal arc classification: IAC A FLR, ISC ≤ 31.5 kA, t = 1s arc duration
• All switching operations can be carried out at the panel front with the high-voltage door
closed
• Standard degree of protection IP3XD for the metal enclosure according to IEC 60529/
VDE 0470 Part 1
• Metallic, positively driven shutters protect against accidental contact with live parts
inside the panel
• Logical interlocks between actuation, circuit-breaker, disconnecting function and
earthing switch operating mechanism prevent maloperation
• Earthing of feeders by means of earthing switches with short-circuit making capacity
• Mechanical position indicators for the withdrawable part and the earthing switch
integrated in the mimic diagram at the panel front
Further information to design features and design options is given in catalog HA 25.71.
Fig. 1: Front view of circuit-breaker panel Fig. 2: Front view of contactor panel
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 7
Description
6 Panel types
The withdrawable circuit-breaker switchgear NXAIR consists of various panel types
which can be freely combined according to the requirements.
The following panel types are available:
• Circuit-breaker panel
• Disconnecting panel
• Metering panel
• Bus sectionalizer
• busbar connection panel
• Contactor panel
6.1 Circuit-breaker panel
The circuit-breaker panel is the basic panel type of NXAIR. The circuit-breaker panel can
fulfil the function "incoming feeder" or "outgoing feeder". It can carry or switch all rated
normal currents of the busbar and the feeders as well as the short-circuit currents
quoted on the respective rating plates.
Basic components • Busbars
• Withdrawable circuit-breaker
• Mechanically coupling low-voltage plug connector between the withdrawable part and
the panel
• Panel connection for cables or bars
Additional components • Current transformers
• Fixed-mounted voltage transformers in cable compartment and busbar compartment
• Voltage transformers on withdrawable part, disconnectable
• Earthing switch with short-circuit making capacity in cable compartment and busbar
compartment
• Surge arresters at the cable connection
• Surge limiters at the cable connection
• Insulated busbar system
• Busbar transverse partition
• Sockets for capacitive voltage detection
Description
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6.2 Disconnecting panel
The disconnecting panel is an additional panel to the basic NXAIR panel type. The
disconnecting panel carries electrical power. It cannot switch electrical power. The
disconnector link is therefore protected by a padlock against arbitrary movement
(standard version).
Basic components • Busbars
• Withdrawable disconnector link
• Mechanically coupling low-voltage plug connector between the withdrawable part and
the panel
• Panel connection for cables or bars
Additional components • Current transformers
• Fixed-mounted voltage transformers in cable compartment and busbar compartment
• Earthing switch with short-circuit making capacity in cable compartment and busbar
compartment
• Surge arresters at the cable connection
• Surge limiters at the cable connection
• Insulated busbar system
• Busbar transverse partition
• Sockets for capacitive voltage detection
6.3 Metering panel
The metering panel is used to measure the voltage of the busbars. To separate the
voltage transformer set, the metering panel is equipped with a withdrawable part.
Basic components • Busbars
• Withdrawable metering unit
• Mechanically coupling low-voltage plug connector between the withdrawable part and
the panel
• Fixed-mounted voltage transformer set on withdrawable part with three single-pole
voltage transformers, optionally with or without fuses
6.4 Bus sectionalizer
A bus sectionalizer consists of two NXAIR panels: A circuit-breaker panel and a
disconnecting panel, or a circuit-breaker panel and a bus riser panel.
Basic components • Busbars
• Withdrawable circuit-breaker
• Disconnector link
• Mechanically coupling low-voltage plug connector between the withdrawable parts
and the panels
• Connection bars in connection compartment at the bottom
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 9
Description
Additional components • One or two current transformer sets
• One or two voltage transformer sets
• Insulated busbar system
• Busbar transverse partition
• Sockets for capacitive voltage detection
• Busbar earthing switch
• Fixed-mounted voltage transformers in cable compartment and busbar compartment
• Voltage transformers on withdrawable part, disconnectable
6.5 Contactor panel
The contactor panel is an additional panel to the basic NXAIR panel type. The contactor
panel is especially suitable for operational switching of loads with a high switching rate.
Short-circuit and overload protection is taken over by HV HRC fuse-links.
Basic components • Busbars
• Withdrawable contactor with HV HRC fuse-links
• Automatically coupling low-voltage plug connector between the withdrawable part and
the panel
• Panel connection for cables
Additional components • Fused control transformer
• Current transformers
• Surge limiters
Description
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7 Panel design
Basic design • Enclosure made of galvanized sheet-steel
• Front doors and lateral switchgear end walls are powder-coated with resistant epoxy
resin material
• Individual modular compartments in solid-wall design
• Modular compartments bolted together
Fig. 3: Sectional view of the circuit-breaker panel design
a Metallic shutters for high-voltage contacts
s Low-voltage connection, plug-in type
d Operating and interlocking unit for withdrawable circuit-breaker,
disconnector link and withdrawable metering unit
f Vacuum interrupters
g Operating and interlocking unit for racking the withdrawable part
and for earthing
h Make-proof earthing switch
j Cable connection for up to 4 cables per phase
k Voltage transformer
l Contact system
; Block-type current transformer
A Bushing-type insulator
S Busbars
D Pressure relief duct
A Switching device compartment
B Busbar compartment
C Connection compartment
D Withdrawable circuit-breaker
E Low-voltage compartment
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Description
Further information to design features and design options is given in catalog HA 25.71.
Fig. 4: Sectional view of the contactor panel design
a Metallic shutters for high-voltage contacts
s Contact system
d HV HRC fuse-links
f Vacuum contactor
g Operating and interlocking unit for racking the
withdrawable part and for earthing
h Cable connection for up to 2 cables per phase
j Make-proof earthing switch
k Block-type current transformer
l Busbars
; Pressure relief duct
A Switching device compartment
B Busbar compartment
C Connection compartment
D Withdrawable contactor
E Low-voltage compartment
Description
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8 Interlocks
Mechanical interlocks
Additional electromagnetic interlocks (optional)
Action Internal preconditions of the withdrawable part
Inserting the withdrawable part in the panel Withdrawable part in test position on service truck
Pulling the withdrawable part out of the panel None
Racking the withdrawable part to service
position
Withdrawable part inserted and interlocked
Low-voltage connector plugged in
High-voltage door closed
Circuit-breaker in OPEN position / contactor in OPEN position
Feeder earthing switch in OPEN position
Plug low-voltage connector in Consistent coding between connector and withdrawable part fulfilled *
Racking the withdrawable part to test position Circuit-breaker in OPEN position / contactor in OPEN position
Closing the circuit-breaker / closing the
contactor
Withdrawable part in interlocked end position (test or service position)
Opening the circuit-breaker / opening the
contactor
None
Closing the contactor HV HRC fuse-links not tripped
Operating the feeder earthing switch Withdrawable part in interlocked test position
Operating the busbar earthing switch None (see note below)
Opening the high-voltage door Withdrawable part in test position
* Not feasible with withdrawable vacuum contactor
Action Addtional preconditions
Racking the withdrawable part General or external release
Operating the feeder earthing switch General or external release *
Operating the busbar earthing switch General or external release
* Not feasible with withdrawable vacuum contactor
NOTE!
The busbar earthing switch is secured against unintentional operation by means of a
padlock or an electromagnetic interlock.
Panel versions with electromagnetic interlocking are identified on the high-voltage
door with labels for interlocking the disconnecting function and/or the earthing
switch.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 13
Description
Additional padlock interlock (optional)
Additional interlock with lock systems (optional) Lock system type Ronis®
9 Accessories
The switchgear is always supplied with the following standard accessories:
• Racking crank with protective shield for moving the withdrawable part.
• Push rod for closing / opening the circuit-breaker mechanically
• Hand crank with freewheel for charging the circuit-breaker manually
• Operating lever for feeder and busbar earthing switch
• Double-bit key for low-voltage door
• Double-bit key for withdrawable part
• Service truck for withdrawable parts
• Installation and operating instructions
The following accessories are optionally available:
• Slip-on levers for shutter operation (set for left and right side)
• Additional service truck for withdrawable parts
• Wall-mounting holder for accessories
• Earthing accessories for 31.5 kA/1 s
• Emergency tool adapter for feeder earthing switch without withdrawable part inserted
in the panel
• Plug-in voltage indicator IEC 61243-5/VDE 0682, Part 415, LRM system for capacitive
voltage tap
• Test unit for voltage indicator
• Touch-up kit for minor paint damage
• Touch-up paint, 1 kg tin
• Coupling unit, 64-pole - 3 m long connection between withdrawable part and panel for
function testing
• Tin of Longterm 2 grease (used on: contact system, earthing switch knifes)
• Shell Vaseline 8422 DAB 8 (used on: busbar connection and earth connection)
• Grease Isoflex TOPAS L32 (used on: shutter rods , withdrawable unit guide)
• Test equipment for pressure switch
• Phase comparison test units
Action Addtional preconditions
Racking the withdrawable part Key for padlock
Operating the feeder earthing switch Key for padlock
Operating the busbar earthing switch Key for padlock
Opening the high-voltage door Key for padlock
Action Addtional preconditions
Racking the withdrawable part to service
position
Access to actuating openings only after opening the Ronis® lock
Switch feeder earthing switch to CLOSED
position
Access to actuating openings only after opening the Ronis® lock
Switch feeder earthing switch to OPEN position Access to actuating openings only after opening the Ronis® lock
Description
14 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
10 Technical data
10.1 Complete switchgear
Electrical data (maximum values)
Dimensions per panelin mm
Electrical data
Rated voltage Ur [kV] 12 17.5
Rated short-duration power-frequency withstand voltage Ud [kV] 28 1) 38
Rated lightning impulse withstand voltage Up [kV] 75 2) 95
Rated frequency fr [Hz] 50/60
Rated short-circuit breaking current Isc [kA] 31.5
Rated short-circuit making current Ima [kA] 82
Rated peak withstand current Ip [kA] 82
Rated short-time withstand current Ik [kA] 31.5
Rated duration of short-circuit tk [s] 1-3
Rated normal current of the busbar Ir [A] 2500
Rated normal current of feeders Ir [A] 2500
Rated normal current for bus sectionalizer Ir [A] 2500
Rated normal current of feeders, contactor panel Ir [A] 310 3)
1) 42 kV optional
2) Contactor panel max. 60 kV at 7.2 kV and max. 40 kV across the open interrupter
Contactor panel max. 75 kV at 12 kV and max. 60 kV across the open interrupter
3) Depending on rated current of HV HRC fuse-links
Panel type NXAIR Dimension [mm]
Circuit-breaker panel ≤ 1000 A Width 600
1250 A 800
Disconnecting panel ≤ 1250 A 800
Bus sectionalizer ≤ 1250 A 2 x 800
Bus sectionalizer ≤ 2500 A 2 x 1000 or
1 x 1000 with 1 x 800
Busbar connection panel ≤ 2500 A 800
Contactor panel ≤ 310 A 435
Metering panel 800
Standard Height 2300
With high low-voltage compartment 2350
With natural ventilation 2300
With additional compartment for busbar components 2350
Contactor panel, standard 2300
Contactor panel with high low-voltage compartment 2350
Single busbar Depth 1350
Double busbar, back-to-back arrangement 2850
Contactor panel 1400
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 15
Description
Dimensions of theswitchgear room
To install the switchgear, the switchgear room must have certain minimum dimensions.
Please observe the following illustrations.
Pressure relief system Depending on the room height, the pressure relief system of switchgear with evacuation
ducts must be led outside the switchgear building:
NXAIR, single-rowarrangement
Type of protection
Basic prescriptions andstandards
The indoor switchgear complies with the following prescriptions and standards:
Room height
[mm]
Rated voltage
Ur [kV]
Rated short-time withstand current
Ik [kA]
Design with evacuation ducts
to the outside of the building
≥ 2500 to 2800 ≤ 12 ≤ 25 compulsory
≥ 2800 ≤ 12 ≤ 25 optional
≥ 2500 ≤ 12 31.5 compulsory
≥ 2500 17.5 ≤ 31.5 compulsory
Single-row arrangement (plan view) for single-busbar
switchgear
For width (B) and depth (T) of the panel see table
mentioned above.
1) For panel replacement: Control aisle ≥ 1410 mm
2) For cable connection from the rear: ≥ 800 mm
For back-to-back and face-to-face arrangement, the
room dimensions apply accordingly to those for
single-row arrangement.
For back-to-back arrangement, a 1200 mm wide control
aisle is required on the left or on the right of the
switchgear.
Fig. 5: Dimensions of switchgear room, NXAIR
Standard IP3XD
Optional IP4X
Partition in switching device compartment IP2X
IEC/EN standard
Switchgear 62271-1
62271-200
Switching devices Circuit-breakers 62271-100
Contactors 60470
Disconnectors/earthing
switches
62271-102
Voltage detecting systems 61243-5
Insulation 60071-1
Degree of protection 60529
Instrument transformers Current transformers 60044-1
Voltage transformers 60044-2
Installation, erection 61936-1
Description
16 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Electromagneticcompatibility - EMC
The a.m. standards as well as the "EMC Guide for Switchgear"* are applied during
design, manufacture and erection of the switchgear. Installation, connection and
maintenance have to be performed in accordance with the stipulations of the operating
instructions. For operation, the legal stipulations applicable at the place of installation
have to be observed additionally. In this way, the switchgear assemblies of this type
series fulfill the basic protection requirements of the EMC guide.
The switchgear operator / owner must keep the technical documents supplied with the
switchgear throughout the entire service life, and keep them up-to-date in case of
modifications of the switchgear.
* (Dr. Bernd Jäkel, Ansgar Müller; Medium-Voltage Systems - EMC Guide for
Switchgear; A&D ATS SR/PTD M SP)
Rating plates Each panel has a rating plate fixed on the inside of the high-voltage and the low-voltage
door containing the following information:
The block-type current and voltage transformers have their own type plates. A copy is
provided on the inside of the high-voltage door.
IAC classification The data (see item f) describes the internal arc classification of the panel according to
IEC 62271-200. The entries IAC A FLR 25 kA 1 s in the example shown mean:
• IAC: Internal Arc Classification
• A: Type of accessibility A; for authorized personnel only; switchgear in closed electrical
service location; access for expert personnel only.
• F: Internal arc classification for the front side (Front)
• L: Internal arc classification for the lateral sides (Lateral)
• R: Internal arc classification for the rear side (Rear)
• 25 kA: Tested short-circuit current
• 1 s: Test duration
The IAC classification is referred to each panel. The data on the rating plate (see item f)
describes the areas classified for the corresponding panel.
Fig. 6: Fig. 3:Rating plate
a Switchgear type
s Serial number
d Technical data
f Internal arc classification
g Number of operating
instructions for the panel
h Year of manufacture
j Panel number
k Loss of service continuity
category, partition class
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 17
Description
10.2 Operating conditions
NXAIR switchgear is designed for normal indoor operating conditions according to IEC
62271-1.
In this respect, the following limit values for the ambient air temperature must be
complied with as a minimum:
The site altitude may be 1000 m above sea level as a maximum.
When NXAIR switchgear is used in regions with high air humidity or considerable
temperature fluctuations, there is risk of condensation. The formation of condensation
should be an exception under normal operating conditions. To prevent condensation,
rusting or other serious consequences, the associated preventive measures must be
taken by installing electrical heating equipment in the switchgear.
The ambient air must not be significantly polluted by dust, smoke, corrosive and/or
flammable gases, vapors or salt.
10.3 Vacuum circuit-breaker type 3AE
The vacuum circuit-breaker type 3AE SION is a 3-pole indoor circuit-breaker for ratings
from 3 kV to 3 kV.
Rating plate A rating plate is provided on the operating mechanism unit of every circuit-breaker type
3AE SION.
Limit value Temperature [ºC]
Maximum value + 40
Minimum value - 5
Maximum value of 24-hour mean + 35
a Rating plate type 3AE SION
Description
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10.4 Contactor type 3TL6
The vacuum contactor type 3TL6 is a 3-pole indoor contactor for ratings from 7.2 kV to
12 kV.
Rating plate A rating plate is provided on the operating mechanism unit of every contactor type 3TL6.
10.5 Operating instructions for circuit-breaker type 3AE and contactor type 3TL6
Operating instructions forcircuit-breaker and
contactor
For circuit-breakers type 3AE and contactors type 3TL6, separate operating instructions
are available with detailed instructions and information. The operating instructions are
supplied as standard with every circuit-breaker type 3AE and contactor type 3TL6.
Additional operating instructions in different languages can be ordered at the regional
Siemens representative.
a Rating plate type 3TL6
Fig. 7: Operating instructions for circuit-breaker type 3AE SION
Fig. 8: Operating instructions for contactor type 3TL6
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 19
Description
Available operatinginstructions for
circuit-breaker type 3AE
Available operatinginstructions for contactor
type 3TL6
Language Order number of operating instructions
German BA_000000092290001100_0A_001
Polish BA_000000092290001155_0-_001
Russian BA_000000092290001156_0-_001
Italian BA_000000092290001172_0-_001
English BA_000000092290001176_0-_001
French BA_000000092290001177_0-_001
Spanish BA_000000092290001178_0-_001
Portuguese BA_000000092290001179_0-_001
Romanian BA_000000092290001302_0-_001
Language Order number of operating instructions
German-English BA_000000092299527174_0J_001
French-Spanish BA_000000092299527159_0J_001
German-Russian BA_000000092299527512_0J_001
Description
20 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
11 Service information
11.1 Maintenance
Maintenance ensures undisturbed and uninterrupted operation of the switchgear.
The maintenance measures are divided into the following fields:
• Visual inspection
• Preventive maintenance
Time schedule formaintenance measures
Besides the recommended maintenance intervals, additional maintenance measures
may be required for operational reasons.
Recommended time schedule for maintenance measures
ATTENTION!
Non-observance of the following instructions can endanger people or damage the
switchgear.
All measures within the scope of maintenance may only be executed by qualified
personnel.
Furthermore, the relevant IEC standards and the local and site-related safety
regulations must be observed.
For questions about maintenance measures, please contact your regional Siemens
representative.
Measure Interval Operational fact
Visual inspection Every year or at the operator's
discretion
Preventive
maintenance
Every 10 years, or depending on
operational facts, or at the operator's
discretion
E.g. after a short-circuit breaking/making operation of a
circuit-breaker and/or an earthing switch when the
permissible number of operating cycles has been
reached
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Description
11.2 Visual inspection
The visual inspection is performed every year or at the operator's discretion.
General check for paint damages on all panels of a switchgear assembly in the area
of the front doors, the lateral and the rear termination. If required, repair damages.
General check of the switchgear for dust layers, especially of the absorber units and
ventilation units in the pressure relief duct.
Clean dust layers on the units with customary vacuum cleaners without damaging
the wire frames a or ventilation slots a.
Fig. 9: View from above onto an absorber unit in the pressure relief duct
Fig. 10: View from above onto a ventilation unit in the pressure relief duct
Description
22 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
General check for humidity. To do this, open the high-voltage door of the switching
device compartment of every third panel and check the switching device
compartment for humidity or condensation. For instructions to rack a withdrawable
part, see Page 26, "Operation NXAIR".
If there is humidity or condensation inside a switching device compartment,
determine the cause thereof. To do this, do also observe the climatic conditions of
the switchgear room, and arrange for suitable measures such as room ventilation or
room heating.
General check for partial discharge noises. If there are any partial discharge noises,
determine the cause thereof and take adequate countermeasures.
Check whether the accessories are complete (see Page 13, "Accessories").
11.3 Preventive maintenance
Perform visual inspection and carry out the necessary maintenance work according
to the problems determined.
When an earthing switch has performed two short-circuit making operations,
maintenance work has to be done by means of a visual inspection of the earthing
switch blades and the fixed laminated contacts. If there is any visible erosion, the
stressed components must be replaced. To do this, please contact the regional
Siemens representative.
Built-in equipment such as circuit-breakers, voltage transformers, current
transformers, relays, meters, protection equipment, etc. must be serviced and
maintained as specified in the associated operating instructions.
Fig. 11: Exemplary view of a ventilated panel with lateral ventilation slots in the high-voltage door (in other panel designs, the ventilation slots are also provided centrally at the bottom).
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 23
Description
Carry out maintenance and servicing at shorter intervals (to be specified by the
owner) if there is a lot of dust, or if the air is extremely humid and/or polluted.
Following the results of the visual inspection (see Page 21, "Visual inspection"),
grease the main contacts at:
• Moving rails
• Fixed contacts of the earthing switch
• Bushings
Fig. 12: Circuit-breaker, disconnecting and metering panel
a Moving rails
s Fixed contacts of earthing switch
d Bushings
Description
24 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Greases to be used
Independently of the regular visual inspection and preventive maintenance,
immediately determine the cause of failures and short circuits, and replace any
damaged components.
11.4 Switchgear extension
The switchgear can be extended at both ends without modification of existing panels.
For switchgear extension, please contact the regional Siemens representative.
11.5 Spare part orders
Information required for spare part orders of single components and devices:
• Type and serial number of the switchgear and the withdrawable part as per rating
plates.
• Precise designation of the device or component, if applicable on the basis of the
information and illustrations in the associated instructions, a drawing, sketch or circuit
diagram.
• Spare parts have to be ordered at the regional Siemens representative.
Fig. 13: Contactor panel
Component Interval Grease
- Main fixed contacts of bushings d
- Fixed contacts of earthing switch s
Shorter intervals (at the
operator's discretion)
Longterm 2
- Moving rails a Isoflex Topas L32
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Description
11.6 Replacement of panels and components
Replacement of panels
For replacement of panels, please contact the regional Siemens representative.
Replacement of components
The individual components, such as measuring instruments, current transformers, etc.,
can be replaced. The contact pieces in the bushings are bolted and can be replaced. In
case of wear or changed environmental conditions, the contact pieces can be replaced
from the front without dismantling any conductor bars.
For replacement of components, please contact the regional Siemens representative.
11.7 Disposal
NXAIR switchgear is an environmentally compatible product.
The panels are made of galvanized sheet metal. The doors and switchgear end walls are
powder-coated with resistant epoxy resin material.
The switchgear materials should be recycled as far as possible. The switchgear can be
disposed of in an environmentally compatible manner in compliance with existing
legislation.
The components of the switchgear can be recycled as mixed scrap; however,
dismantling as far as possible into sorted scrap with a residual mixed-scrap portion is the
more environmentally compatible way.
Electronic scrap must be disposed of in accordance with the existing regulations.
The switchgear consists of the following materials:
• Sheet metal, galvanized
• Copper
• Aluminum
• Polycarbonate (PC)
• Cr-Ni steel
• Epoxy resin
• Cast resin
• Fiber-reinforced plastics
• Rubber materials
• Ceramic materials
• Lubricants
• Bolts, washers, nuts, rivets made of steel
As delivered by Siemens, the switchgear does not contain hazardous materials as per
the Hazardous Material Regulations applicable in the Federal Republic of Germany. For
operation in other countries, the locally applicable laws and regulations must be
followed.
For further information, please contact the regional Siemens representative.
Operation NXAIR
26 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Operation NXAIR
12 Safety instructions
DANGER!
High voltage! Danger!
Do not touch live components.
Ensure that the switchgear is only operated by qualified personnel who are familiar
with the operating instructions and observe the warnings.
DANGER!
During operation of electrical equipment and switchgear, parts of this equipment are
under dangerous electrical voltage. Mechanical components may move quickly, even
remotely controlled.
Do not remove covers.
Do not reach into openings.
Do not touch circuit-breaker poles and operating rods.
NOTE!
Perfect and safe operation of the switchgear
The perfect and safe operation of this switchgear is conditional on correct erection
and installation according to the installation instructions.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 27
Operation NXAIR
13 Panel operation
13.1 Control elements at the front side of the panel
Fig. 14: Control elements at the panel front of the circuit-breaker panel
a Door of low-voltage compartment
s Protection device
d Locking device for low-voltage door
f Test sockets for busbar voltage detecting system (type LRM) as
additional equipment
g High-voltage door
h Opening for charging the spring in the circuit-breaker manually
j Door handle for opening the high-voltage door
k Control gate for opening and closing the actuating opening for
racking the switching device
l Actuating opening for racking the switching device
; Actuating opening for inserting the double-bit key to control
racking of the withdrawable part
A Mechanical position indicator for withdrawable part
S Actuating opening for make-proof earthing switch
D Control gate for opening and closing the actuating opening for
operating the earthing switch mechanism
F Mechanical position indicator for earthing switch
G Operations counter for circuit-breaker
H "Closing spring charged" indicator for circuit-breaker
J CLOSED/OPEN indicator of the circuit-breaker
K Actuating opening for opening the circuit-breaker
L Actuating opening for closing the circuit-breaker
Rotary button for opening and closing the actuating opening below
Operation NXAIR
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Fig. 15: Control elements at the panel front of the contactor panel
a Door of low-voltage compartment
s Protection device
d Locking device for low-voltage door
f High-voltage door
g Locking device for high-voltage door
h Door handle for opening the high-voltage door
j Control gate for opening and closing the actuating opening for
operating the earthing switch mechanism
k Mechanical position indicator for earthing switch
l Actuating opening for earthing switch
; Actuating opening for racking the switching device
A Control gate for opening and closing the actuating opening for
racking the switching device
S Actuating opening for inserting the double-bit key to control
racking of the withdrawable part
Position indication for withdrawable part and earthing switch
Circuit-breaker, disconnecting and metering panels
Contactor panel
Circuit-breaker CLOSED OPEN
- - -
Earthing switch CLOSED OPEN
-
CLOSED OPEN
Withdrawable part Service position Faulty position Test position
- -
Spring energy store in circuit-breaker CHARGED NOT
CHARGED
- - -
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 29
Operation NXAIR
13.2 Operating tools
The following operating tools are supplied as accessories:
Fig. 16: Racking crank with protective shield for moving the withdrawable part.
Fig. 17: Push rod for closing / opening the circuit-breaker mechanically
Fig. 18: Operating lever for operation of the feeder or busbar earthing switch
Fig. 19: Hand crank for manual charging of the spring in the circuit-breaker
Operation NXAIR
30 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Fig. 20: Slip-on lever for opening the shutters in front of the fixed contacts in the switching device compartment (optional).
Fig. 21: Emergency tool adapter to be used exclusively for emergency operation of the feeder earthing switch - without withdrawable part inserted in the panel - in case of electrical failure of the switchgear (optional)
Fig. 22: Double-bit key with a diameter of 3 mm for opening and closing the door of the low-voltage compartment
Fig. 23: Double-bit key with a diameter of 5 mm for releasing and interlocking the withdrawable part
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 31
Operation NXAIR
Fig. 24: Service truck to insert and remove a withdrawable circuit-breaker, disconnector link and metering unit
Fig. 25: Service truck to insert and remove the withdrawable contactor
Operation NXAIR
32 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
13.3 Opening and closing the high-voltage door
Opening high-voltage door of circuit-breaker panel
Preconditions • Withdrawable part in test position
Procedure Pull door handle upwards and open the door.
Fig. 26: Opening the high-voltage door of the circuit-breaker panel
r High-voltage door is open.
NOTE!
The following instructions for opening and closing the high-voltage door apply to:
Circuit-breaker panels
Disconnecting panels
Metering panels
Contactor panels
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 33
Operation NXAIR
Opening the high-voltage door of the contactor panel
Preconditions • Double-bit key available
• Withdrawable part in test position
Procedure Insert double-bit key in door lock and turn 90 ° counter-clockwise.
Pull door handle upwards and open the door.
Fig. 27: Opening the high-voltage door of the contactor panel
r High-voltage door is open.
Operation NXAIR
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Closing the high-voltage door of the circuit-breaker panel
Preconditions Either without withdrawable part or:
• Withdrawable part inserted in test position
• Low-voltage connector plugged in
Procedure Pull door handle upwards and close the door.
Push door handle downwards.
Fig. 28: Closing the high-voltage door of the circuit-breaker panel
r High-voltage door is closed.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 35
Operation NXAIR
Closing the high-voltage door of the contactor panel
Preconditions • Double-bit key inserted in door lock.
Either without withdrawable part or:
• Withdrawable part inserted in test position
• Low-voltage connector couples automatically in the panel.
Procedure Pull door handle upwards and close the door.
Push door handle downwards.
Turn double-bit key 90° counter-clockwise and remove it.
Fig. 29: Closing the high-voltage door of the contactor panel
r High-voltage door is closed.
Operation NXAIR
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13.4 Racking the withdrawable circuit-breaker to service position
Preconditions for operation • Withdrawable circuit-breaker inserted and locked in the panel
• Low-voltage connector plugged in
• High-voltage door closed
• Circuit-breaker in OPEN position
• Feeder earthing switch in OPEN position
• Racking crank for moving the withdrawable circuit-breaker available
• Double-bit key available
The actuating opening for racking the withdrawable circuit-breaker is located on the
control board of the high-voltage door.
Fig. 30: Actuating opening for racking the withdrawable circuit-breaker (padlock on actuating opening of feeder earthing switch is optional)
ATTENTION!
Please observe:
The instructions in this section also apply to the disconnector link and the
withdrawable metering unit.
ATTENTION!
Withdrawable disconnector links cannot switch electrical power on or off.
Rack withdrawable disconnector links from test position to service position only if
the panel is in de-energized condition. This equally applies to racking from service
position to test position.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 37
Operation NXAIR
Procedure
Open lock (optional).
Push control gate upwards.
ATTENTION!
If there is no auxiliary voltage, both the electrical and the mechanical interlocks are
closed. If the optional interlocks are overridden locally, manual switching operations are
possible despite an existing electrical interlock, and this can cause failures.
Ensure that the intended manual switching operation has been released externally.
ATTENTION!
All interlocks are only released when the withdrawable part is in a stable end position.
Rack the withdrawable circuit-breaker, disconnector link and metering unit
absolutely until end position.
Operation NXAIR
38 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
To release access to the withdrawable part, insert the double-bit key and turn 90°
clockwise.
Push the racking crank for moving the withdrawable circuit-breaker onto the
operating shaft, and turn clockwise as far as it will go.
Remove racking crank for moving the withdrawable part.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 39
Operation NXAIR
Turn the double-bit key 90° clockwise to interlock the withdrawable part.
Remove double-bit key.
Close control gate.
Close lock (optional).
r The withdrawable circuit-breaker has been racked from test position to service
position; the position indicator is in CLOSED position (vertical bar)
Operation NXAIR
40 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
13.5 Racking the withdrawable circuit-breaker to test position
Preconditions for operation • High-voltage door closed
• Withdrawable part in service position
• Circuit-breaker in OPEN position
• Racking crank for moving the withdrawable circuit-breaker available
• Double-bit key available
Fig. 31: Actuating opening for racking the withdrawable circuit-breaker
ATTENTION!
Please observe:
The instructions in this section also apply to the disconnector link and the
withdrawable metering unit.
ATTENTION!
Withdrawable disconnector links cannot switch electrical power on or off.
Rack withdrawable disconnector links from test position to service position only if
the panel is in de-energized condition. This equally applies to racking from service
position to test position.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 41
Operation NXAIR
Open lock (optional).
Push control gate upwards.
ATTENTION!
If there is no auxiliary voltage, both the electrical and the mechanical interlocks are
closed. If the optional interlocks are overridden locally, manual switching operations are
possible despite an existing electrical interlock, and this can cause failures.
Ensure that the intended manual switching operation has been released externally.
ATTENTION!
All interlocks are only released when the withdrawable part is in a stable end position.
Rack the withdrawable circuit-breaker, disconnector link and metering unit
absolutely until end position.
Operation NXAIR
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To release access to the withdrawable part, insert the double-bit key and turn 90°
counter-clockwise.
Push the racking crank for moving the withdrawable circuit-breaker onto the
operating shaft, and turn counter-clockwise as far as it will go.
Remove racking crank for moving the withdrawable part.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 43
Operation NXAIR
Turn the double-bit key 90° counter-clockwise to interlock the withdrawable part.
Remove double-bit key.
Close control gate.
Close lock (optional).
r The withdrawable circuit-breaker has been racked from service position to test
position; the position indicator of the withdrawable part is OPEN (horizontal bar).
Operation NXAIR
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13.6 Racking the withdrawable contactor to service position
Preconditions for operation • Withdrawable contactor inserted and locked in the panel
• High-voltage door closed
• Contactor in OPEN position
• Feeder earthing switch in OPEN position
• Racking crank for moving the withdrawable contactor available
• Double-bit key available
The actuating opening for racking the withdrawable contactor is located on the control
board of the high-voltage door.
Fig. 32: Actuating opening for racking the withdrawable contactor
Procedure
ATTENTION!
If there is no auxiliary voltage, both the electrical and the mechanical interlocks are
closed. If optional interlocks are overridden locally, it is possible to perform manual
operations despite existing interlocks, and this can cause failures.
Ensure that the intended manual switching operation has been released externally.
ATTENTION!
All interlocks are only released when the withdrawable contactor is in a stable end
position.
Always rack the withdrawable contactor completely up to the end position.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 45
Operation NXAIR
Open lock (optional).
Push control gate upwards.
To release access to the withdrawable part, insert the double-bit key and turn 90°
clockwise.
ATTENTION!
If the contactor on the withdrawable part is equipped with a mechanical closing latch,
the contactor will automatically be switched to OPEN position as soon as the double-bit
key is inserted and turned 90° clockwise.
Automatic opening only happens when the contactor on the withdrawable part is in
CLOSED position.
Operation NXAIR
46 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Push the racking crank for moving the withdrawable contactor onto the operating
shaft, and turn clockwise as far as it will go.
Remove racking crank for moving the withdrawable part.
Turn the double-bit key 90° clockwise to interlock the withdrawable part.
Remove double-bit key.
Close control gate.
Close lock (optional).
r The withdrawable contactor has been racked from test position to service position.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 47
Operation NXAIR
13.7 Racking the withdrawable contactor to test position
Preconditions for operation • Withdrawable contactor inserted and locked in the panel
• High-voltage door closed
• Withdrawable part in service position
• Contactor in OPEN position
• Racking crank for moving the withdrawable contactor available
• Double-bit key available
Fig. 33: Actuating opening for racking the withdrawable contactor
ATTENTION!
If there is no auxiliary voltage, both the electrical and the mechanical interlocks are
closed. If optional interlocks are overridden locally, it is possible to perform manual
operations despite existing interlocks, and this can cause failures.
Ensure that the intended manual switching operation has been released externally.
ATTENTION!
All interlocks are only released when the withdrawable contactor is in a stable end
position.
Always rack the withdrawable contactor completely up to the end position.
Operation NXAIR
48 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Open lock (optional).
Push control gate upwards.
To release access to the withdrawable part, insert the double-bit key and turn 90°
counter-clockwise.
Push the racking crank for moving the withdrawable part onto the operating shaft,
and turn counter-clockwise as far as it will go.
ATTENTION!
If the contactor on the withdrawable part is equipped with a mechanical closing latch,
the contactor will automatically be switched to OPEN position as soon as the double-bit
key is inserted and turned 90° clockwise.
Automatic opening only happens when the contactor on the withdrawable part is in
CLOSED position.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 49
Operation NXAIR
Remove racking crank for moving the withdrawable part.
Turn the double-bit key 90° counter-clockwise to interlock the withdrawable part.
Remove double-bit key.
Close control gate.
Close lock (optional).
r The withdrawable part has been racked from service position to test position.
13.8 Closing the circuit-breaker
Manual operation
Preconditions for operation • Withdrawable part in service or test position
• Spring charged
• Push rod available
Fig. 34: Actuating opening for closing the circuit-breaker mechanically
Operation NXAIR
50 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Procedure Turn cover of actuating opening aside using the rotary button located over it.
Insert the push rod through the actuating opening in the door and operate the ON
pushbutton until the switching noise of the circuit-breaker can be heard.
r The position indicator changes from "0" position to "I" position. The operations
counter is increased by 1. The circuit-breaker is closed.
Take push rod out of actuating opening.
Cover of actuating opening closes automatically.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 51
Operation NXAIR
Electrical operation
Preconditions for operation • Withdrawable part in service or test position
• Spring charged
• High-voltage door of panel is closed.
• Central or local electrical control.
Procedure
Close circuit-breaker via central or local electrical control.
r The position indicator changes from "0" position to "I" position. The operations
counter is increased by 1. The circuit-breaker is closed.
13.9 Opening the circuit-breaker
Manual operation
Preconditions for operation • Withdrawable part in service or test position
• Circuit-breaker in CLOSED position
• Push rod available
Fig. 35: Opening the circuit-breaker mechanically
DANGER!
If there is no auxiliary voltage, both the electrical and the mechanical interlocks are
closed. If the interlocks are overridden, manual switching operations are possible
despite an existing electrical interlock, and this can cause failures.
Ensure that the intended manual switching operation has been released externally.
Operation NXAIR
52 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Procedure Turn cover of actuating opening aside using the rotary button located over it.
Insert the push rod through the actuating opening in the door and operate the OFF
pushbutton until the switching noise of the circuit-breaker can be heard.
r The position indicator changes from position "I" to position "O". The circuit-breaker is
open.
Take push rod out of actuating opening.
Cover of actuating opening closes automatically.
DANGER!
If there is no auxiliary voltage, both the electrical and the mechanical interlocks are
closed. If the optional interlocks are overridden, manual switching operations are
possible despite an existing interlock, and this can cause failures.
Ensure that the intended manual switching operation has been released externally.
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Operation NXAIR
Electrical operation
Preconditions for operation • Circuit-breaker in CLOSED position
• Central or local control.
Procedure Open circuit-breaker via central or local electrical control.
r The circuit-breaker position indicator changes from "I" position to "0" position. The
circuit-breaker is open.
13.10 Charging the spring manually
Spring energy storeindicator
When auxiliary voltage is applied, the spring energy store of the circuit-breaker is
charged automatically by plugging the low-voltage connector. The spring energy store
indicator changes from "spring energy store not charged" to "spring energy store
charged".
Fig. 36: Spring energy store indicator "Spring energy store not charged"
Fig. 37: Spring energy store indicator "Spring energy store charged"
If the control voltage fails, the closing spring for operating the circuit-breaker is no longer
charged automatically by the motor. To operate the circuit-breaker in spite of this, the
closing spring must be charged manually.
The closing springs of the circuit-breaker can be charged manually both with the circuit-
breaker in test position and with the circuit-breaker in service position.
Preconditions • Withdrawable circuit-breaker completely inserted and locked in the panel
• Hand crank available
Fig. 38: Actuating opening for charging the closing spring manually
Operation NXAIR
54 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Turn control gate of operating shaft aside using the rotary button located over it.
Push hand crank onto operating shaft.
Hold the freewheel a and turn the hand crank s clockwise approx. 25 turns until
the "spring energy store charged" indication appears in the inspection window.
r The spring is latched automatically. The energy required for the operating sequence
OPEN-CLOSE-OPEN (auto-reclosing) is stored in the spring. The spring energy store
indicator changes from "spring energy store not charged" to "spring energy store
charged".
Remove the hand crank.
Close control gate of operating shaft using the rotary button.
DANGER!
Risk of injury by sudden rotation of hand crank. If you use a hand crank without a
freewheel to charge the spring, the hand crank will rotate when the control voltage is
switched on again (motor starts up) and can lead to injury.
Use special hand crank with freewheel from the accessories!
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 55
Operation NXAIR
13.11 Closing or opening the contactor
Electrical operation The contactor in the contactor panel can be closed or opened by electrical operation. The
control elements for electrical operation are located on the front door of the low-voltage
compartment.
Alternatively, electrical operation can also be done from a control board or a separate
switching room.
Mechanical operation Besides electrical opening, a contactor can also be switched off through a mechanical
opening operation. To do this, the contactor must be equipped with a mechanical closing
latch.
Mechanical opening can take place with the withdrawable contactor both in test and
service position
• see Page 44, "Racking the withdrawable contactor to service position"
• see Page 47, "Racking the withdrawable contactor to test position"
Instruction label If contactors on withdrawable parts are designed without mechanical closing latch,
these contactors are identified with an instruction label on the front cover of the
withdrawable part.
Fig. 39: Instruction label on withdrawable contactor
a Instruction label
Operation NXAIR
56 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
13.12 Feeder earthing
Preconditions for operation • The feeder to be earthed is isolated
• Withdrawable part in test position
• Operating lever available
In circuit-breaker, disconnecting and metering panels, the actuating opening and the
position indicator of the feeder earthing switch are located bottom-left on the door to the
switching device compartment; in contactor panels, bottom-right. The actuating opening
is locked by means of an additional control gate.
NOTE!
Please observe:
The instructions in this section also apply to disconnecting panels with feeder
earthing switch.
DANGER!
Once you have started a switching operation, you must complete it totally; turning back
is blocked. The operating lever cannot be removed at intermediate positions.
Do not remove the operating lever at intermediate positions.
Fig. 40: Actuating opening at the circuit-breaker and disconnecting panel
Fig. 41: Actuating opening at the contactor panel
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 57
Operation NXAIR
Procedure
Open lock (optional).
Pull control gate upwards to release the actuating opening.
DANGER!
If there is no auxiliary voltage, both the electrical and the mechanical interlocks are
closed. If the necessary interlocks are overridden, manual switching operations are
possible despite an existing interlock, and this can cause failures.
Observe the Five Safety Rules (see Page 4, "General instructions").
Ensure that the intended manual switching operation has been released externally.
ATTENTION!
If the operating lever is not inserted correctly, the earthing switch may be damaged.
Insert the operating lever in the actuating opening as far as it will go.
Fig. 42: Control gate at the circuit-breaker and disconnecting panel
Fig. 43: Control gate at the contactor panel
Operation NXAIR
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Insert operating lever for feeder earthing switch into actuating opening.
Turn operating lever 180° clockwise.
r The position indicator changes to CLOSED position. The earthing switch is closed.
Remove operating lever.
Close control gate.
Close lock (optional).
Fig. 44: Operating lever at the circuit-breaker and disconnecting panel
Fig. 45: Operating lever at the contactor panel
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Operation NXAIR
13.13 Feeder de-earthing
Preconditions for operation • Authorization to deactivate the feeder earthing is available
In basic panels., the actuating opening and the position indicator of the feeder earthing
switch are located bottom-left on the door to the switching device compartment; in
contactor panels, bottom-right. The actuating opening is locked by means of an
additional control gate.
NOTE!
Please observe:
The instructions in this section also apply to disconnecting panels with feeder
earthing switch.
DANGER!
Once you have started a switching operation, you must complete it totally; turning back
is blocked. The operating lever cannot be removed at intermediate positions.
Do not remove the operating lever at intermediate positions
Fig. 46: Actuating opening at the circuit-breaker and disconnecting panel
Fig. 47: Actuating opening at the contactor panel
DANGER!
If there is no auxiliary voltage, both the electrical and the mechanical interlocks are
closed. If the necessary interlocks are overridden, manual switching operations are
possible despite an existing interlock, and this can cause failures.
Observe the Five Safety Rules (see Page 4, "General instructions").
Ensure that the intended manual switching operation has been released externally.
Operation NXAIR
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Procedure
Open lock (optional).
Pull control gate upwards to release the actuating opening.
Insert operating lever for feeder earthing switch into actuating opening.
Turn operating lever 180° counter-clockwise.
r The position indicator changes to OPEN position. The earthing switch is open.
ATTENTION!
If the operating lever is not inserted correctly, the earthing switch may be damaged.
Insert the operating lever in the actuating opening as far as it will go.
Fig. 48: Control gate at the circuit-breaker and disconnecting panel
Fig. 49: Control gate at the contactor panel
Fig. 50: Operating lever at the circuit-breaker and disconnecting panel
Fig. 51: Operating lever at the contactor panel
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Remove operating lever.
Close control gate.
Close lock (optional).
13.14 Busbar earthing
Arrangement of controlelements
The operating mechanism of the earthing switch provided for earthing the busbar
system is located in the front upper area of the low-voltage compartment
Fig. 52: Control elements of earthing switch for busbar system
ATTENTION!
Once you have started a switching operation, you must complete it totally; turning back
is blocked. The operating lever cannot be removed at intermediate positions.
Do not remove the operating lever at an intermediate position.
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Manual operation
Preconditions • The earthing switch can only be closed if the electromagnetic interlock of the
operating mechanism is eliminated or if opening the padlock at the operating
mechanism is authorized.
• Operating lever available
Procedure
Open lock or deactivate electromagnetic interlock.
Open control gate.
Insert operating lever and turn approx. 115° clockwise.
DANGER!
Manual operations might be possible in spite of an existing electrical interlock, and this
can cause failures.
Observe the Five Safety Rules (see Page 4, "General instructions").
Ensure that the intended manual switching operation has been released externally.
Fig. 53: Earthing switch in OPEN position and secured with lock
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Operation NXAIR
While turning the operating lever, the position indicator of the earthing switch
changes from the OPEN position to the FAULTY position.
After turning the operating lever to the end position, the position indicator of the
earthing switch changes from the FAULTY position to the CLOSED position.
Remove operating lever.
Close control gate.
Close lock (optional).
r The busbar earthing switch was switched from the OPEN to the CLOSED position,
thus earthing the busbar. The position indicator of the earthing switch changes from
the OPEN position via the FAULTY position to the CLOSED position.
Fig. 56: Position indicator in CLOSED position
Fig. 54: Position indicator in FAULTY position
Fig. 55: Operating lever in end position
Operation NXAIR
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13.15 Busbar de-earthing
Arrangement of controlelements
The operating mechanism of the earthing switch provided for earthing the busbar
system is located in the front upper area of the low-voltage compartment
Fig. 57: Control elements of earthing switch for busbar system
Manual operation
Preconditions • Operating lever available
• The earthing switch can only be opened if the electromagnetic interlock of the
operating mechanism is eliminated or if opening the padlock at the operating
mechanism is authorized.
ATTENTION!
Once you have started a switching operation, you must complete it totally; turning back
is blocked. The operating lever cannot be removed at intermediate positions.
Do not remove the operating lever at an intermediate position.
DANGER!
Manual operations might be possible in spite of an existing electrical interlock, and this
can cause failures.
Observe the Five Safety Rules (see Page 4, "General instructions").
Ensure that the intended manual switching operation has been released externally.
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Operation NXAIR
Procedure
Open lock or deactivate electromagnetic interlock.
Open control gate.
Insert operating lever and turn approx. 115° counter-clockwise.
While turning the operating lever, the position indicator of the earthing switch
changes from the CLOSED position to the FAULTY position.
Fig. 58: Earthing switch in CLOSED position and secured with lock
Fig. 59: Position indicator in FAULTY position
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After turning the operating lever to the end position, the position indicator of the
earthing switch changes from the FAULTY position to the OPEN position.
Remove operating lever.
Close control gate.
Close lock (optional).
r The busbar earthing switch was switched from the CLOSED to the OPEN position,
thus de-earthing the busbar. The position indicator of the earthing switch changes
from the CLOSED position via the FAULTY position to the OPEN position.
Fig. 61: Position indicator in OPEN position
Fig. 60: Operating lever in end position
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13.16 Access to connection compartment
Access through switching device compartment
Procedure Ask for permission to earth, and switch the feeder earthing switch to EARTHED (see
Page 56, "Feeder earthing").
Open the high-voltage door (see Page 32, "Opening high-voltage door of circuit-
breaker panel")
Take the withdrawable part out (see Page 71, "Taking the withdrawable circuit-
breaker, disconnector link and/or withdrawable metering unit out of the panel").
Check whether the position indicator of the feeder earthing switch in the switching
device compartment shows "I", i.e. earthed.
Remove the partition between the switching device compartment and the
connection compartment.
In circuit-breaker, disconnecting or metering panels: Remove bolts from protection
plate of switching device compartment.
Remove protection plate of switching device compartment a.
DANGER!
To perform any kind of checks or work in the connection compartment of a panel, you
must ensure that this compartment is safely isolated from supply. Otherwise the
cables in the connection compartment will be live at operating voltage.
Before removing the partition in the switching device compartment, isolate and
earth the cable connection in the connection compartment.
Before removing a rear wall on the rear side of a panel, isolate and earth the cable
connection in the connection compartment.
Observe the Five Safety Rules (see Page 4, "General instructions").
Verify safe isolation from supply (see Page 88, "Verification of safe isolation from
supply").
Fig. 62: Bolted joints of protection plate of switching device compartment in circuit-breaker, disconnecting and metering panels
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Remove bolts from partition to connection compartment inside switching device
compartment.
Remove partition s.
Fig. 63: Bolted joints of partition in circuit-breaker panel
Fig. 64: Bolted joints of partition in contactor panel
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Operation NXAIR
Access through rear side of panel
Remove 38 bolts M8 x 20 from rear wall to connection compartment.
Remove rear wall to connection compartment.
Check whether the earthing switch blades are in EARTHED position.
Fig. 65: Circuit-breaker panel: Earthing switch open
a Indication: Earthing switch open
s Earthing switch blades in vertical position
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Now you can perform the intended work in the connection compartment.
Fig. 66: Circuit-breaker panel: Earthing switch closed (earthed)
d Indication: Earthing switch closed
f Earthing switch blades in horizontal position
Fig. 67: Contactor panel: Earthing switch open
Fig. 68: Contactor panel: Earthing switch closed (earthed) with removed partition
a Indication: Earthing switch open
d Indication: Earthing switch closed
f Earthing switch blades in horizontal position
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13.17 Taking the withdrawable circuit-breaker, disconnector link and/or withdrawable metering unit out of the panel
Preconditions Service truck available
Racking the withdrawable part to test position
High-voltage door open.
Procedure Detach the low-voltage connector. To do this, push the coupling lever upwards.
Hang the low-voltage plug into the support located underneath the low-voltage
compartment.
ATTENTION!
If the service truck is not correctly interlocked with the panel while removing the
withdrawable part, the switchgear and the withdrawable part can be seriously
damaged.
Move the withdrawable part only if the service truck is interlocked with the panel.
Move the service truck only if the withdrawable part is interlocked in its end
position on the service truck.
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Move the service truck centrally in front of the panel. Observe that the centering
brackets are positioned inside the door opening.
Push the locking edges on the left and right side of the truck into the openings
provided for this purpose in the panel frame. Observe that the guide rails of the
panel and the service truck are horizontally aligned with each other.
If required, adjust the height of the guide rails at the service truck with two open-end
spanners SW 19 at the two lower setting screws.
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Operation NXAIR
Verify the position of the unlocking levers a (denoted) and d, and check whether
the service truck is correctly interlocked with the panel by pulling s the service truck
backwards.
r The service truck is interlocked with the panel.
Pulling the withdrawablepart onto the service truck
Release the interlocking between the withdrawable part and the panel by turning the
two locking levers at the withdrawable part to the outside, and pull the withdrawable
part onto the service truck by the handles until it reaches the end position.
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Turn the two locking levers at the withdrawable part to the inside in order to interlock
the withdrawable part with the service truck.
Pull the two unlocking levers on the left and right side of the service truck upwards to
release the interlocking with the panel frame.
r Now, the withdrawable circuit-breaker can be transported on the service truck.
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Operation NXAIR
Fig. 69: Withdrawable part on service truck
13.18 Inserting the withdrawable circuit-breaker and/or disconnector link in a panel
Coding The mechanical coding on the low-voltage plug connector of the withdrawable part
prevents plugging the low-voltage connector on withdrawable parts with lower current
ratings in panels with higher current ratings. The withdrawable circuit-breakers and
disconnector links are differently coded.
DANGER!
Operating the switchgear with a withdrawable part that is not suitable for the
corresponding panel can cause serious damage to the switchgear.
The coding must not be changed.
NOTE!
Withdrawable contactors are designed without coding
Do absolutely observe the rated currents of the HV HRC fuse-links.
Operation NXAIR
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On the rear side of the low-voltage plug connector and on the top side of the operating
mechanism box of the circuit-breaker, the disconnector link and the withdrawable
metering unit, there is a coding symbol. If the symbols are identical, the withdrawable
part concerned can be inserted in the panel.
With the mechanical coding and the coding symbols, different functions and equipment
versions are coded:
Fig. 70: Low-voltage plug connection
a Mechanical coding
Fig. 71: Low-voltage connector
a Coding symbol on the
operating mechanism
box of the circuit-breaker
s Coding symbol on the
low-voltage connector
Function Equipment version
Function of withdrawable part Withdrawable circuit-breaker and disconnector link in combination with rated normal
current of the withdrawable part versions "circuit-breaker" and "disconnector link" for
≤ 1250 A and 2500 A
Equipment versions Withdrawable part equipped without / with electromagnetic interlocking of the
disconnecting function and/or earthing switch operating function
Equipment version only for
withdrawable circuit-breaker
Equipped with a number of shunt releases, and/or combination of shunt releases with
undervoltage releases and c.t.-operated releases
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Operation NXAIR
Positioning the servicetruck with the
withdrawable part in frontof the panel
Open the high-voltage door (see Page 32, "Opening high-voltage door of circuit-
breaker panel")
Verify correspondence between the position of the earthing switch operating shaft in
the withdrawable part and the earthing switch coupling in the panel.
Make sure that the coupling pin of the earthing switch operating shaft in the
withdrawable part and the earthing switch coupling in the switching device
compartment are in vertical position.
ATTENTION!
If the service truck is not correctly interlocked with the panel while inserting the
withdrawable part, the switchgear and the withdrawable part can be seriously
damaged.
Move the withdrawable part only if the service truck is interlocked with the panel.
Move the service truck only if the withdrawable part is interlocked in its end
position on the service truck.
Fig. 72: Coupling pin in the earthing switch operating shaft
Fig. 73: Earthing switch coupling in the switching device compartment
Operation NXAIR
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Move the service truck centrally in front of the panel. Observe that the centering
brackets are positioned inside the door opening.
Push the locking edges on the left and right side of the truck into the openings
provided for this purpose in the panel frame. Observe that the guide rails of the
panel and the service truck are horizontally aligned with each other.
If required, adjust the height of the guide rails at the service truck with two open-end
spanners SW 19 at the two lower setting screws.
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Operation NXAIR
Verify the position of the unlocking lever, and check whether the service truck is
correctly interlocked with the panel by pulling the service truck backwards.
r The service truck is interlocked with the panel.
Pushing the withdrawablepart into the panel
Turn the locking levers at the operating traverse of the withdrawable part to the
outside.
Pull the unlocking handle of the service truck out.
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Push the withdrawable part into the panel as far as it will go.
Interlock the withdrawable part with the panel by turning the two locking levers at
the operating traverse of the withdrawable part inside.
The withdrawable part is correctly interlocked with the panel when both locking
levers latch tight inside.
Pull the two unlocking levers on the left and right side of the service truck upwards to
release the interlocking with the panel frame.
Pull the service truck back away from the panel at the black fabric edge.
Mount the low-voltage connector carefully and push the coupling lever downwards.
r Now, the withdrawable part is inserted in the panel.
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Operation NXAIR
13.19 Taking the withdrawable contactor out of the panel
Preconditions Service truck available
Withdrawable contactor in test position
High-voltage door open
Procedure Move the service truck centrally in front of the contactor panel. Bring the centering
bolts a of the service truck into line with the centering openings s at the panel
base.
ATTENTION!
If the service truck is not properly interlocked with the panel while removing the
withdrawable part, the switchgear and the withdrawable part can be seriously
damaged.
Move the withdrawable part only if the service truck is interlocked with the panel.
Move the service truck only if the withdrawable part is interlocked in its end
position on the service truck.
NOTE!
Withdrawable contactors are designed without coding
Do absolutely observe the rated currents of the HV HRC fuse-links.
a Centering bolt
s Centering opening
d Locking bracket
f Locking plate
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Fold the locking bracket d upwards. This will lower the locking plate f.
r The service truck is interlocked with the contactor panel.
Pulling the withdrawablecontactor onto the service
truck
Open the two locking levers s at the withdrawable contactor.
Fig. 74: Preparing the withdrawable contactor for removal
a Withdrawable contactor
s Locking lever
d Service truck
f Locking bracket
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Operation NXAIR
Pull the withdrawable contactor a out of the switching device compartment and
onto the service truck d until the withdrawable contactor latches tight on the
service truck.
The low-voltage connection is separated automatically.
r Now the locking bracket f can be lowered, and the service truck with the
withdrawable contactor can be removed.
13.20 Inserting the withdrawable contactor in the panel
Before inserting thewithdrawable contactor
If required, close the feeder shutter and secure it with a padlock (see Page 99,
"Closing the feeder shutter (lower shutter)").
If required, close the busbar shutter and secure it with a padlock (see Page 100,
"Closing the busbar shutter (upper shutter)").
NOTE!
When the withdrawable contactor is inserted, the mechanism for manual operation of
the feeder shutter and the busbar shutter is not accessible.
Insert the withdrawable contactor in the panel only if the feeder shutter and the
busbar shutter are closed and secured with a padlock each.
Operation NXAIR
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Inserting the withdrawablecontactor in the panel
Before inserting the withdrawable contactor, check the position of the earthing
switch coupling. The coupling must be in position s, then the receptacle a for the
coupling pin of the earthing switch operating shaft d is in vertical position.
Fig. 75: Feeder and busbar shutters closed and locked
a Padlock
s Padlock
d Feeder shutter, closed
f Busbar shutter, closed
Fig. 76: Earthing switch coupling in the switching device compartment
a Receptacle for coupling pin
s Marking in "O" position
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Operation NXAIR
Make sure that the coupling pin of the earthing switch operating shaft d in the
withdrawable part is in vertical position.
The low-voltage connection f couples automatically when the withdrawable
contactor is inserted.
Positioning the servicetruck with the
withdrawable part in frontof the panel
Open the high-voltage door (see Page 32, "Opening high-voltage door of circuit-
breaker panel").
Move the service truck with the withdrawable contactor centrally in front of the
contactor panel. Bring the centering bolts of the service truck into line with the
centering openings at the panel base.
Fold the locking bracket at the service truck upwards. The service truck is interlocked
with the contactor panel.
Release the withdrawable contactor from the service truck using the pedal, and push
it completely into the contactor panel.
Fig. 77: Coupling pin of the earthing switch operating shaft
d Coupling pin
f Low-voltage connection
ATTENTION!
If the service truck is not properly interlocked with the panel while inserting the
withdrawable part, the switchgear and the withdrawable part can be seriously
damaged.
Move the withdrawable part only if the service truck is interlocked with the
contactor panel.
Move the service truck only if the withdrawable part is interlocked in its end
position on the service truck.
Operation NXAIR
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Fold the locking bracket at the service truck downwards. The service truck can be
removed.
Close the two locking levers at the withdrawable contactor.
Fig. 80: Closing the locking levers
Fig. 78: Pedal at the service truck Fig. 79: Pushing the withdrawable contactor into the panel
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Operation NXAIR
Fig. 81: Locking lever closed
r The withdrawable contactor is interlocked with the contactor panel.
Close the high-voltage door (see Page 34, "Closing the high-voltage door of the
circuit-breaker panel").
13.21 Emergency operation of the feeder earthing switch without the withdrawable circuit-breaker inserted in the panel
Feeder earthing (emergency operation without interlocking)
Preconditions for operation • Tool adapter for emergency operation
Procedure Open high-voltage door.
Push tool adapter on coupling of operating mechanism in switching device
compartment.
Turn tool adapter clockwise.
r The feeder earthing switch can be clearly heard to close. The position indicator
changes from "0" position to "I" position.
ATTENTION!
Manual emergency operations without withdrawable part are possible despite an
existing electrical interlock, and this can cause failures.
Observe the Five Safety Rules (see Page 4, "General instructions").
Ensure that the intended manual emergency operation without withdrawable part
has been released externally.
Operation NXAIR
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Feeder de-earthing
Preconditions for operation • Tool adapter for emergency operation
Procedure Open high-voltage door.
Push tool adapter on coupling of operating mechanism in switching device
compartment.
Turn tool adapter counter-clockwise.
r The feeder earthing switch can be clearly heard to open.
r The position indicator changes from position "I" to position "O".
r Ensure that the coupling in the panel and the shaft from the withdrawable unit are in
the same position, before inserting the wiithdrawable unit.
13.22 Verification of safe isolation from supply
To perform any kind of checks or work in the busbar compartment or the connection
compartment of a panel, you must ensure that these compartments are safely isolated
from supply.
As voltage indicators, two device systems are used. CAPDIS device system installed
directly in the low-voltage door, and LRM device system as an indicator with the
associated measuring system installed below the low-voltage door.
Fig. 82: Voltage indicator LRM
Fig. 83: Voltage indicator CAPDIS
ATTENTION!
Manual emergency operations without withdrawable part are possible despite an
existing electrical interlock, and this can cause failures.
Observe the Five Safety Rules (see Page 4, "General instructions").
Ensure that the intended manual emergency operation without withdrawable part
has been released externally.
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To check the perfect operation of the indicator, it is advisable to test it first in live
condition.
With the voltage indicators of the LRM system, repeat tests must be performed in
accordance with IEC 61243-5.
The year of the last repeat test is noted on the panel front, next to test socket L3.
Fig. 84: Function test unit for voltage indicator
Procedure
Insert the voltage indicator successively in all three feeder test sockets of the phases
L1, L2, L3 (on the left side of the panel). If the indicator does not flash or light up in
any of the three test sockets, the feeder is not live.
ATTENTION!
The function of the surge arrester installed is impaired if short-circuiting jumpers are
used.
Use voltage indicators according to IEC 61243-5 only.
Operation NXAIR
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Insert the voltage indicator successively in all three busbar test sockets of the
phases L1, L2, L3 (on the right side of the panel). If the indicator does not flash or
light up in any of the three test sockets, the busbars are not live.
In panels with degree of protection IP51 for the metal enclosure, the test sockets are
protected with covers.
Refit the covers after having verified safe isolation from supply.
Features ofCAPDIS-S1+/-S2+
• Maintenance-free
• Integrated repeat test of the interfaces (full lightning flash)
• Without auxiliary power
• Option: CAPDIS S2+ with remote indication of voltage state (auxiliary power required)
• With test sockets (LRM system) for phase comparison behind the cover
Fig. 85: CAPDIS-S2+: Cover closed Fig. 86: CAPDIS-S2+: Cover open
a LC display g Test socket L2
s "Display Test" button h Test socket L3
d Cover j Earth socket
f Test socket L1 k Short instructions
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Operation NXAIR
IndicationsCAPDIS -S1+/-S2+
13.23 Connecting earthing and short-circuit facility
To reach the fixed mating contacts, open the corresponding shutter (see Page 92,
"Manual operation of shutters in circuit-breaker and disconnecting panels").
CAPDIS-S1+ CAPDIS-S2+
L1 L2 L3 L1 L2 L3
Operating voltage not present (CAPDIS-
S2+)
Operating voltage present
- Operating voltage not present
- Auxiliary power not present (CAPDIS-S2+)
Earth fault or failure in phase L1,
operating voltage at L2 and L3
Voltage (not operating voltage) present
Indication: "Device function test" passed
Indication: "ERROR" e.g. in case of
missing auxiliary voltage (CAPDIS-S2+)
DANGER!
High voltage! Danger! If the busbars in the busbar compartment and the cable or bar
connections in the connection compartment have not been isolated, the contacts are
live at operating voltage.
Isolate the busbars in the busbar compartment and the cable or bar connections in
the connection compartment before opening the shutters.
Observe the Five Safety Rules (see Page 4, "General instructions").
Verify safe isolation from supply.
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Preconditions Earthing accessories available
Feeder bushings Fix earthing clamp of earthing accessories f on earthing busbar g.
Plug connectors of earthing accessories f on fixed mating contacts s of feeder
bushings d (lower bushing row) and screw tight.
r Feeder connected to earthing busbar.
Busbar bushings Fix earthing clamp of earthing accessories f on earthing busbar g.
Plug connectors of earthing accessories f on fixed mating contacts s of busbar
bushings a (upper bushing row) and screw tight.
r Busbars connected to earthing busbar.
13.24 Manual operation of shutters in circuit-breaker and disconnecting panels
The feeder and busbar shutters can be opened individually. When one shutter is opened,
the mechanism of the other one can be padlocked. If both shutters have to be opened at
the same time, locking the shutter mechanism is omitted during the following
operations.
Fig. 87: Earthing accessories, mounted
a Busbar bushings
s Fixed mating contacts
d Feeder bushings
f Earthing accessories
g Earthing clamp on earthing
busbar.
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Opening the feeder shutter (lower shutter)
Rack withdrawable circuit-breaker to test position.
Take circuit-breaker out of panel (see Page 71, "Taking the withdrawable circuit-
breaker, disconnector link and/or withdrawable metering unit out of the panel").
Padlock busbar shutter mechanism on left side of panel.
Push slip-on lever on feeder shutter mechanism on right side of panel.
DANGER!
High voltage! Danger! If the busbars in the busbar compartment and the cable or bar
connections in the connection compartment have not been isolated, the contacts are
live at operating voltage.
Isolate the busbars in the busbar compartment and the cable or bar connections in
the connection compartment before opening the shutters.
Observe the Five Safety Rules (see Page 4, "General instructions").
Verify safe isolation from supply.
Operation NXAIR
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Operate the slip-on lever outside the panel to open the shutters: Push the handle
down. The slip-on lever latches tight and the feeder shutter opens automatically.
Perform voltage test or other intended operation.
Closing the feeder shutter
Push handle of slip-on lever lightly to the left (to release the latch) and let it slip
upwards. The shutter closes automatically.
Remove slip-on lever for shutters.
Remove padlock from busbar shutter mechanism on left side of panel.
Insert circuit-breaker in panel (see Page 75, "Inserting the withdrawable circuit-
breaker and/or disconnector link in a panel").
Close high-voltage door.
Opening the busbar shutter (upper shutter)
Rack withdrawable circuit-breaker to test position.
Take circuit-breaker out of panel (see Page 71, "Taking the withdrawable circuit-
breaker, disconnector link and/or withdrawable metering unit out of the panel").
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 95
Operation NXAIR
Padlock feeder shutter mechanism on right side of panel.
Push slip-on lever on busbar shutter mechanism on left side of panel.
Operate the slip-on lever outside the panel to open the shutters: Push the handle
down. The slip-on lever latches tight and the busbar shutter opens automatically.
Perform voltage test or other intended operation.
Operation NXAIR
96 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Closing the busbar shutter
Push handle of slip-on lever lightly to the right (to release the latch) and let it slip
upwards. The shutter closes automatically.
Remove slip-on lever for shutters.
Remove padlock from feeder shutter mechanism on right side of panel.
Insert circuit-breaker in panel (see Page 75, "Inserting the withdrawable circuit-
breaker and/or disconnector link in a panel").
Close the high-voltage door.
13.25 Manual operation of shutters in the contactor panel
The feeder and busbar shutters can be opened individually. When one shutter is opened,
the mechanism of the other one can be padlocked. If both shutters have to be opened at
the same time, locking the shutter mechanism is omitted during the following
operations.
DANGER!
High voltage! Danger! If the busbars in the busbar compartment and the cable or bar
connections in the connection compartment have not been isolated, the contacts are
live at operating voltage.
Isolate the busbars in the busbar compartment and the cable or bar connections in
the connection compartment before opening the shutters.
Observe the Five Safety Rules (see Page 4, "General instructions").
Verify safe isolation from supply.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 97
Operation NXAIR
Preparing shutter operation
Rack the withdrawable contactor to test position.
Open the high-voltage door.
Take the withdrawable contactor out of the panel (see Page 81, "Taking the
withdrawable contactor out of the panel").
The shutter mechanism for manual operation of the shutters is located top-left in the
switching device compartment of the contactor panel.
Fig. 88: Front view of contactor panel, high-voltage door open and withdrawable contactor removed
a Shutter mechanism for manual
operation
s Busbar shutter
d Feeder shutter
Operation NXAIR
98 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Description of the shutter mechanism for manual operation
Fig. 89: Control elements of the shutter mechanism
a Padlock
s Padlock
d Shutter operating lever with handle for
operation of the busbar shutter
f to h,
k
Locking buttons
j Shutter operating lever with handle for
operation of the feeder shutter
l Busbar shutter, closed
; Feeder shutter, closed
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 99
Operation NXAIR
Opening the feeder shutter (lower shutter)
Loosen the locking buttons h and k.
Open and remove the padlock a.
Turn the shutter operating lever j clockwise by the handle as far as it will go.
Tighten the locking buttons h and k.
Fig. 90: Feeder shutter open
r The feeder shutter ; is open.
Perform voltage test or other intended operation.
Closing the feeder shutter (lower shutter)
Loosen the locking buttons h and k.
Turn the shutter operating lever j counter-clockwise by the handle as far as it will
go.
Tighten the locking buttons h and k.
Refit the padlock a and lock it.
r The feeder shutter ; is closed.
Close the high-voltage door.
Operation NXAIR
100 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Opening the busbar shutter (upper shutter)
Loosen the locking buttons f and g.
Open and remove the padlock s.
Turn the shutter operating lever d counter-clockwise by the handle as far as it will
go.
Tighten the locking buttons f and g.
Fig. 91: Busbar shutter open
r The busbar shutter l is open.
Perform voltage test or other intended operation.
Closing the busbar shutter (upper shutter)
Loosen the locking buttons f and g.
Turn the shutter operating lever d clockwise by the handle as far as it will go.
Tighten the locking buttons f and g.
Refit the padlock s and lock it.
r The busbar shutter l is closed.
Close the high-voltage door.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 101
Operation NXAIR
13.26 Application of HV HRC fuse-links
Replacing HV HRC fuse-links
Preconditions The dimensions of the HV HRC fuse-links must conform to DIN 43625.
To replace the HV HRC fuse-links, the withdrawable contactor must be taken out of
the panel (see Page 81, "Taking the withdrawable contactor out of the panel")
DANGER!
High voltage! Danger! Before performing any kind of work or test in a connection
compartment with tripped fuse, isolate the feeder.
Open the vacuum contactor.
Rack the withdrawable part to test position.
Earth the feeder.
Observe the Five Safety Rules.
DANGER!
Danger of burning on hot fuse-links.
Use the personal protective equipment.
Let hot fuse-links cool down before replacing.
ATTENTION!
Even if the withdrawable part shows no visible damages of a fault, the fuse may have
tripped due to a fault.
Check the switching device compartment for deformations when a fuse has
tripped.
NOTE!
Tripped fuses can cause hidden damages on the other fuses.
Always replace all fuse-links, even if only one fuse has tripped.
Operation NXAIR
102 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Permissible HV HRCfuse-links
Use only fuse-links from the table below.
Table of permissible HV HRC fuse-links:
• Back-up fuses for motor protection make SIBA, type HHM for rated currents In
with: 40 A ≤ In ≤ 315 A
• Back-up fuses for standard protection make Firma SIBA, type HHD for rated
currents In with: 6.3 A ≤ In < 50 A
Necessary extension tubes for HV HRC fuse-links with reference dimension
"e" < 442 mm
Design of fuse-links according to IEC 60282 - 1 with dimensions according to DIN 43625.
Ur
[kV]
In HV HRC fuse
[A]
Reference dimension "e"
[mm]
HV HRC fuse-link
Order no. Type
7.2 6.3 192 3000213.6,3 HHD
10 192 3000213.10 HHD
16 192 3000213.16 HHD
20 192 3000213.20 HHD
25 192 3000213.25 HHD
31.5 192 3000213.31,5 HHD
40 192 3000213.40 HHD
50 442 3010853.50 HHM
63 442 3010853.63 HHM
80 442 3010853.80 HHM
100 442 3010853.100 HHM
125 442 3010953.125 HHM
160 442 3010953.160 HHM
200 442 3010954.200 HHM
250 442 3010954.250 HHM
315 442 3010954.315 HHM
Ur
[kV]
In HV HRC fuse
[A]
Reference dimension "e"[mm]
HV HRC fuse-link
Order no. Type
12 6,3 292 3000213.6,3 HHD
10 292 3000213.10 HHD
16 292 3000213.16 HHD
20 292 3000213.20 HHD
25 292 3000213.25 HHD
31,5 292 3000213.31,5 HHD
40 292 3000213.40 HHD
50 442 3010853.50 HHM
63 442 3010853.63 HHM
80 442 3010853.80 HHM
100 442 3010853.100 HHM
125 442 3010953.125 HHM
160 442 3010953.160 HHM
Order no.: SIBA HV HRC fuse-link with reference dimension "e"
[mm]
3400602 192
3400601 292
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 103
Operation NXAIR
Procedure Verify safe isolation from supply of the feeder.
Open the fuse brackets over the HV HRC fuse-links with a suitable screwdriver.
Pull the HV HRC fuse-link at the end without the striker upwards out of the fuse
clips and remove all HV HRC fuse-links.
ATTENTION!
Withdrawable contactors are exclusively designed for operation with HV HRC fuse-
links.
Operate withdrawable contactor with HV HRC fuse-links only.
Do not mount bridging links instead of HV HRC fuse-links.
Fig. 92: Opening the fuse bracket with a screwdriver
Fig. 93: Fuse clip open
Fig. 94: HV HRC fuse-link: End without striker Fig. 95: HV HRC fuse-link: End with striker
a Arrow to indicate the location of the striker
s Striker
Operation NXAIR
104 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Insert the new HV HRC fuse-link. The striker s must point towards the operating
front of the withdrawable part. The position of the striker is identified with an arrow
on the fuse-link a.
Fig. 96: Mounted HV HRC fuse-links
r The HV HRC fuse-links have been replaced.
NOTE!
Electrical indication of tripped fuse-links
Electrical indications at the panel or in the remote control room are automatically
reset to operating mode by replacing the HV HRC fuse-links.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 105
Operation NXAIR
13.27 Normal current of the HV HRC fuse-links
The current carrying capacity of the withdrawable contactor with HV HRC fuse-links
performs according to the tables below:
Current carrying capacity ata system frequency of 50 Hz
Current carrying capacity ata system frequency of 60 Hz
Un Ith f Number per phase
In HV HRC
fuse
Current carrying capacity in [A] at ambient temperature in [°C]
[kV] [kA] [Hz] Order no. [A] 25 30 35 40 45 50 55
7.2 <= 31.5 50 3011054.250 2 250 344 333 322 310 298 285 272
3011054.200 2 200 284 275 266 256 246 235 225
3010953.160 2 160 250 242 233 225 216 207 197
3011054.315 1 315 264 256 247 238 229 219 209
3011054.250 1 250 224 217 210 202 194 186 177
3011054.200 1 200 184 178 172 166 159 153 146
3010953.160 1 160 161 156 150 145 139 133 127
3010953.125 1 125 124 120 116 112 108 103 98
3010853.100 1 100 100 97 93 90 86 83 79
3010853.80 1 80 80 79 76 74 71 68 65
3010853.63 1 63 63 63 63 63 63 63 63
3010853.50 1 50 50 50 50 50 50 50 50
Un Ith f Number
per phase
In HV HRC
fuse
Current carrying capacity in [A] at ambient
temperature in [°C]
[kV] [kA] [Hz] Order no. [A] 25 30 35 40 45 50 55
12 <= 31,5 50 3010353.160 2 160 212 205 198 191 184 176 168
3010353.160 1 160 136 132 128 123 118 113 108
3010253.125 1 125 105 102 99 95 91 87 83
3010253.100 1 100 84 82 79 76 73 70 67
3010253.80 1 80 69 67 64 62 60 57 54
3010153.63 1 63 59 57 55 53 51 49 46
3010153.50 1 50 47 45 44 42 40 39 37
Un Ith f Number
per phase
In HV HRC
fuse
Current carrying capacity in [A] at ambient
temperature in [°C]
[kV] [kA] [Hz] Order no. [A] 25 30 35 40 45 50 55
7.2 <= 31.5 60 3011054.250 2 250 339 328 317 305 293 281 268
3011054.200 2 200 280 271 262 252 242 232 221
301093.160 2 160 246 238 230 222 213 204 194
3011054.315 1 315 260 252 243 234 225 216 206
3011054.250 1 250 221 214 206 199 191 183 175
3011054.200 1 200 181 176 170 164 157 150 143
3010953.160 1 160 158 153 148 143 137 131 125
3010953.125 1 125 122 119 114 110 106 101 97
3010853.100 1 100 98 97 92 90 86 83 79
3010853.80 1 80 79 78 75 73 70 67 64
3010853.63 1 63 63 63 63 63 63 63 63
3010853.50 1 50 50 50 50 50 50 50 50
Operation NXAIR
106 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
For rated fuse currents <= 63 A, no current reductions must be considered due to the
ambient temperature and the system frequency.
13.28 Motor starting currents
Due to the arising motor starting current, the instant when the motor starts represents
the maximum stress for the HV HRC fuse-link. Motor starting currents are dependent on
the starting time and the starting frequency.
The latest motor protection tables with HV HRC fuse-links type HHM are available in the
download area of the SIBA company: www.SIBA.de
These motor protection tables show the correspondence between the maximum
permissible starting currents of downstream HV motors (depending on the stating time
and the starting frequency) and the associated HV HRC fuse-links.
Un Ith f Number
per phase
In HV HRC
fuse
Current carrying capacity in [A] at ambient
temperature in [°C]
[kV] [kA] [Hz] Order no. [A] 25 30 35 40 45 50 55
12 <= 31,5 60 3010353.160 2 160 205 199 192 185 178 170 162
3010353.160 1 160 132 128 124 119 115 110 105
3010253.125 1 125 102 99 96 92 88 85 81
3010253.100 1 100 82 79 76 74 71 68 65
3010253.80 1 80 67 65 62 60 58 55 53
3010153.63 1 63 57 55 53 51 49 47 45
3010153.50 1 50 45 44 42 40 39 37 36
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 107
Operation NXAIR
13.29 Coordinating the components of the motor circuit
The illustration below shows the coordination of a HV HRC fuse characteristic with a
motor characteristic as an example:
The latest time-current characteristics for HV HRC fuse links type HHM are available in
the download area of the SIBA company: www.SIBA.de
Coordination Rules for coordinating the components of the motor circuit:
• The time-current characteristic must be located on the right of the motor starting
current (point A).
• The rated current of the HV HRC fuse-link must exceed the normal current of the
motor.
• The current corresponding to the intersection B of the HV HRC fuse-link characteristic
and the characteristic of the overcurrent-time protection must be higher than the
minimum breaking current of the HV HRC fuse-link.
• If this is not feasible, it must be ensured that overload currents that are smaller than
the minimum breaking current of the HV HRC fuse-link are interrupted by the
switching device via the striker. This prevents thermal overloading of the HV HRC fuse-
link, which would otherwise be destroyed.
• The selected HV HRC fuse-link limits the sustained symmetrical short-circuit
currentrom IK to the let-through current ID, shown in the diagram for the current-
limiting characteristics (ID as a function of IK for HV HRC fuse-links with different rated
currents). The maximum permissible let-through current is ID = 46 kA.
Fig. 97: Example for the coordination of a HV HRC fuse characteristic 125 A with a motor characteristic
a Characteristic of the HV HRC fuse
s Motor starting current
d Motor starting time
f Characteristic of the overcurrent-time protection
Operation NXAIR
108 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Requirements The coordination of the components of the motor circuit places the following
requirements:
• The let-through current ID must not exceed 46 kA at 7.2 kV/12 kV.
• In case of low-voltage supply via a control transformer, short-circuit currents ranging
above the limit breaking capacity must be interrupted within 80 ms. This requirement
does not apply if
- the mechanical latch is provided
- or
- the opening times have been extended so much, that – in the a.m. current range –
the contactor can only open when the fuse has interrupted the current
• The limit breaking capacity is:
- 3TL62: 5.0 kA
- 3TL63: 5.0 kA
- 3TL66: 4.5 kA
• Due to the arising motor starting current, the instant when the motor starts represents
the maximum stress for the HV HRC fuse-link. This stress must neither operate nor
pre-damage the fuse-link.
• Other factors of influence on the stress of the HV HRC fuse-links are the starting time
and the starting frequency of the motors.
13.30 Key-operated interlocking with Ronis® locks
Key-operated interlocks with Ronis® locks are available for circuit-breaker and
disconnecting panels NXAIR.
Interlocking functions With these key-opertaed interlocks, three interlocking functions are available.
The key is only released from the Ronis® lock if:
• the withdrawable part is racked to test position. This interlocks the possibility to rack
the withdrawable part concerned to service position.
• the associated earthing switch is in OPEN position. This interlocks the possibility to
switch the earthing switch to CLOSED position.
• the associated earthing switch is in CLOSED position. This interlocks the possibility to
switch the earthing switch to OPEN position.
Release The respective function is released again by re-inserting the key in the associated lock
and releasing the lock.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 109
Operation NXAIR
Combinations These three interlocking functions are available either as individual interlock or as a
combination of two or all three interlocking functions.
Cover Access to Ronis®-locks is located on the right of the standard actuating and control
openings on the high-voltage door, and protected with a cover. The cover is secured with
a rotary button on the high-voltage door.
NOTE!
Key-operated interlocking with Ronis® locks is additional to the mechanical interlocks.
For information to mechanical interlocks, see Page 12, "Interlocks".
NOTE!
Combination of Ronis® key-operated interlocks with electromagnetic interlocks is not
feasible.
For information to standard electromagnetic interlocks, see Page 12, "Interlocks".
Fig. 98: Front view of withdrawable panel with key-operated interlock, cover secured (panel width 800 mm and 1000 mm)t
a Cover
s Rotary button to secure the
cover
Operation NXAIR
110 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
Actuation of the individual Ronis® key-operated interlocks
Turn rotary button counter-clockwise until it is possible to lift the cover
Turn Ronis® key counter-clockwise according to the required function and remove
key.
r The selected function is interlocked with a Ronis® lock.
Fig. 99: Cover lifted
a Cover, lifted
s Screw thread for rotary button
d Key release: Only when feeder earthing
switch is in CLOSED position
f Key release: Only when feeder earthing
switch is in OPEN position
g Key release: Only when withdrawable part is
racked to test position
NOTE!
The key-operated interlocking functions for the position of the withdrawable part and
the position of the earthing switch in OPEN position or CLOSED position can be
interlocked in combination.
The interlocking functions for the position of the earthing switch in OPEN position
or CLOSED position can not be interlocked in combination.
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 111
Operation NXAIR
Example The following illustration shows exemplary the interlocking of the function "Key is
released when earthing switch is in CLOSED position"
Finally lower the cover and secure with the rotary button on the high-voltage door.
Release To release the interlocked function, perform the described operations in reverse order.
Fig. 100: Example of interlocking function
a Ronis® key
removed
s Earthing switch in
CLOSED position
Operation NXAIR
112 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
14 Trouble shooting
Interlocking of withdrawable part
Withdrawable part
Earthing switch
Circuit-breaker
Fault Cause Remedy
Withdrawable part cannot be pushed completely
into the panel and interlocked
Positions of earthing switch operating mechanism
(withdrawable part) and earthing switches (panel)
not in line
Bring the positions of the earthing switch operating
mechanism (withdrawable part) and the earthing
switches into line
Withdrawable part cannot be pulled out of panel Interlocking of withdrawable part closed Open interlocking of withdrawable part
High-voltage door cannot be closed Low-voltage connector not plugged in Plug low-voltage connector in
High-voltage door cannot be opened Withdrawable part in service position Rack withdrawable part to test position
Fault Cause Remedy
Control gate cannot be opened (withdrawable part
cannot be moved to service position
(mechanically))
Operating lever inserted in manual CLOSE/OPEN
mechanism of feeder earthing switch
Remove operating lever
Control gate locked Open lock
Double-bit key for operating the disconnector
function can be inserted, but not turned to the right
Circuit-breaker in CLOSED position Switch circuit-breaker to OPEN position
Earthing switch in CLOSED position Switch earthing switch to OPEN position
Door not closed Close the door
Fault Cause Remedy
Control gate for feeder earthing switch cannot be
opened
Crank for "racking withdrawable part" inserted Remove crank for "racking withdrawable part"
General switchgear interlock active Observe general switchgear interlock
Control gate locked Open lock
Control gate for busbar earthing switch cannot be
opened
General switchgear interlock active Observe general switchgear interlock
Control gate locked Open lock
Operating lever cannot be inserted Withdrawable part in service position and circuit-
breaker in CLOSED/OPEN position
Rack withdrawable part to test position. Switch
circuit-breaker to OPEN position, if required.
Fault Cause Remedy
Circuit-breaker cannot be closed Crank for "racking withdrawable part" inserted Remove crank for "racking withdrawable part"
Withdrawable part in "intermediate position" Rack withdrawable part to "service position" or "test
position
Spring not charged Wait for 15 s (motor) or charge manually
Undervoltage release not activated Activate undervoltage release
Spring energy store is not charged automatically No control voltage Apply control voltage or charge spring energy store
manually
110-0134.9 8BX3300-0LA00-0AB1 * OPERATING INSTRUCTIONS NXAIR * Revision 02 113
15 Index
A
Accessories, maintenance........................................... 22
B
Bus riser panel............................................................... 8
Bus sectionalizer ........................................................... 8
Busbar de-earthing ...................................................... 64
Busbar earthing ........................................................... 61
Busbar earthing switch, trouble shooting................... 112
Bushing-type current transformer, maintenance ......... 22
Bushing-type insulator, maintenance .......................... 22
C
Circuit-breaker panel...................................................... 7
Circuit-breaker, closing ................................................ 49
Circuit-breaker, opening............................................... 51
Circuit-breaker, trouble shooting................................. 112
Closing, circuit-breaker ............................................... 49
Closing, contactor ....................................................... 55
Contactor panel ............................................................. 9
Contactor type 3TL6.....................................................18
Contactor, closing........................................................ 55
Contactor, opening ...................................................... 55
Control elements......................................................... 27
Control elements, overview .......................................... 7
Control gate, fault ....................................................... 112
Control voltage, failure................................................. 53
Control voltage, technical data .....................................14
D
Data, technical ..............................................................14
De-earthing, feeder ..................................................... 59
Dimensions of the switchgear......................................14
Disconnecting panel ...................................................... 8
Disposal....................................................................... 25
Due application.............................................................. 5
E
Earthing switch, maintenance ..................................... 22
Earthing, busbar .......................................................... 61
Earthing, connecting ................................................... 91
Earthing, feeder........................................................... 56
Electrical data ...............................................................14
Emergency operation .................................................. 53
Emergency operation, feeder earthing ........................ 87
F
Features, switchgear......................................................6
Feeder de-earthing.......................................................59
Feeder earthing............................................................56
Feeder earthing switch, trouble shooting .................. 112
Feeder earthing, emergency operation ........................87
Fuse-links, replacing................................................... 101
H
HV HRC fuse-links, normal current ............................ 105
HV HRC fuses ............................................................ 101
I
Inserting, withdrawable contactor................................83
Inserting, withdrawable part ........................................75
Interlocking of withdrawable part,
trouble shooting ......................................................... 112
Interlocks...................................................................... 12
K
Key-operated interlocking........................................... 108
M
Maintenance ................................................................20
Maintenance, corrective...............................................22
Maintenance, preventive..............................................22
Metering panel...............................................................8
Motor circuit, coordination ......................................... 107
Motor starting currents .............................................. 106
N
Normal current, HV HRC fuse-links............................ 105
O
Opening, circuit-breaker...............................................51
Opening, contactor ......................................................55
Operating conditions.................................................... 17
Operating tools ............................................................29
Operation ...............................................................26, 27
P
Padlock, trouble shooting........................................... 112
Panel design................................................................. 10
Panel types, general.......................................................7
Panels, maintenance....................................................22
Prescriptions and standards......................................... 14
Preventive maintenance...............................................20
Q
Qualified personnel ........................................................5
114 Revision 02 * OPERATING INSTRUCTIONS NXAIR * 110-0134.9 8BX3300-0LA00-0AB1
R
Remote control, busbar de-earthing ............................ 64
Removing, withdrawable contactor ............................. 81
Removing, withdrawable part ...................................... 71
Replacing, fuse-links ...................................................101
Revision schedule ........................................................ 22
Ronis® lock................................................................ 108
S
Safe isolation from supply, verification ........................ 88
Safety instructions ......................................................... 4
Safety instructions, operation ...................................... 26
Service information...................................................... 20
Short-circuit facility ...................................................... 91
Shutter, manual operation, contactor panel ................. 96
Shutter, manual operation, withdrawable panel........... 92
Signal terms and definitions .......................................... 4
Spring charging ............................................................ 53
Spring energy store, trouble shooting.........................112
Spring indications ........................................................ 53
Surge arrester, impaired function................................. 88
Switchgear room, dimensions ..................................... 15
T
Technical data ...............................................................14
Test sockets for voltage detecting systems .................. 7
Trouble shooting ......................................................... 112
V
Vacuum circuit-breaker type 3AE .................................17
Visual inspection.......................................................... 21
Voltage indicator .......................................................... 88
W
Withdrawable circuit-breaker, racking to
service position ........................................................... 36
Withdrawable circuit-breaker, racking to
test position................................................................. 40
Withdrawable contactor, inserting............................... 83
Withdrawable contactor, racking to
service position ........................................................... 44
Withdrawable contactor, racking to test position ........ 47
Withdrawable contactor, removing.............................. 81
Withdrawable part in intermediate position
(faulty position) ............................................................ 53
Withdrawable part, inserting ....................................... 75
Withdrawable part, removing .......................................71
Withdrawable part, trouble shooting .......................... 112
Imprint
Siemens AG
Energy Sector
Division Power Distribution
Schaltanlagenwerk Frankfurt
Carl-Benz-Str. 22
D-60386 Frankfurt
© Siemens AG 2010
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