SYSclad switchboard equipped with draw out type vacuum ... · •IEC 60071‐2 for coordination of...

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SYSclad switchboard equipped with drawout type vacuum circuit breaker closed door operation closed door operation 630÷3150A SYSclad 12÷17,5kV 16÷31,5kA

Transcript of SYSclad switchboard equipped with draw out type vacuum ... · •IEC 60071‐2 for coordination of...

Page 1: SYSclad switchboard equipped with draw out type vacuum ... · •IEC 60071‐2 for coordination of the insulation •IEC 62271‐100 for the circuit breaker •IEC 60470 for the contactor

SYSclad switchboard

equipped with draw‐out type

vacuum circuit breaker

closed door operationclosed door operation

630÷3150A

SYSclad 12÷17,5kV

16÷31,5kA

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Generalities

SYSclad is a medium voltage  switchboard metal clad type, air insulated, equipped with vacuum circuit breaker g yp , , q ppsuitable for the primary distribution. The switchboard is modular and is made up by placing standardized units side by side in a coordinated way.The unit compartments are metallically segregated from each other and the live parts are air insulated.The switchboard functional units are guaranteed to be arc‐proof in compliance with IEC 60298 Standards The switchboard is fitted with all the interlocks needed to prevent incorrect operations which might jeopardize the safety of the personnel in charge of it.

Electrical characteristics of the switchgear

Rated voltage kV 12 17,5

Rated insulation voltage kV 12 17,5

Test voltage at power frequency kV 1 min 28 38

Impulse withstand voltage kV 75 95

Rated frequency Hz 50‐60 50‐60

Rated short‐time withstand current kA 3s 31,5 31,5

Peak current kA 78,5 78,5

Internal arc withstand current kA 0,5s 25 25

Main busbar rated current A 3150 3150

6301250

6301250

Rated current of the branch connections A

12501600200025003150

12501600200025003150

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Characteristics of the switchgear

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4 Each unit consists of the following compartments:1) Main busbar2) Circuit breaker compartment3) Auxiliary and instrument compartment4) VT compartment5) Feeder

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Characteristics of the switchgear

Compartmentsp

Each unit consist of three power compartments:busbar, feeder and circuit breaker and three auxiliary compartments: instrumnets, auxiliary circuit interconnection wiring duct and voltage transformers.The arc proof switchgear is also fitted with a duct to evacuate the gases produced by a possible internal arc. All the compartments are metallically segregated from each other.

Main busbars

The busbar compartment houses the main busbar system, which is connected to the circuit breaker fixed isolating contacts by means of branch connections.The main busbars are made of electrolytic copper which can be covered with insulating material on request.

Branch connections

The feeder compartment houses the branch connection system to connect the power cables to the fixed isolating contacts of the circuit breaker.The branch connections are made of electrolytic copper.

Earthing switch

Each incoming/outgoing feeder unit can be fitted with an earthing switch to earth the cables The same device canEach incoming/outgoing feeder unit can be fitted with an earthing switch to earth the cables. The same device can also be used to earth the busbar system (measuring, bus tie and riser units). The earthing switch is fitted with short‐circuit making capacity.

Rated voltage kV 17,5 (*)

Short‐time withstand current /

h i ki ikA

25 x 3s31 5 3

Earthing busbar

Short‐time making capacity 31,5 x 3s

Peak current kA6379

(*) Values also valid for 15 kV

The earthing busbar is made of electrolytic copper. It runs longitudinally round the whole switchgear on the inside, thereby guaranteeing maximum safey for the personnel and for the installation.

Monoblocs and shutters

The monoblocs consist of bushing insulators containing the top and bottom power connections of the circuit b k d h f d d b b lbreaker compartment, towards the feeder and busbar compartments respectively.The shutters are of metallic type and are automatically operated when the circuit breaker moves from the isolated position to the connected position and vice versa.They can be fitted with a fail‐safe device (optional) to prevent their being manually opened with the circuit breaker removed and the door open.Each shutter can be locked using two independent padlocks (optional).

InterlocksInterlocks

The switchgear is fitted with all the interlocks needed to prevent incorrect operations which might jeopardiseT    he safety of the personnel in charge of it.4

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Characteristics of the switchgear

In particular, locking devices are provided to prevent the following operations:p , g p p g p‐ circuit breaker closing in an intermediate position‐ circuit breaker racking‐out in the closed position‐ circuit breaker racking‐in in the closed position‐ circuit breaker compartment door opening in the connected or intermediate position‐ circuit breaker racking‐in with the compartment door open

And if the unit is fitted with an earthing switch with the following as well:‐ earthing switch closing with the circuit breaker in the connected or intermediate position‐ circuit breaker racking‐in with the earthing switch closed

Voltage transformers

The voltage transformer, Tesar manufacturing, are of the type insulated in resin and are used for power supply to measuring instruments and protection. They are available either for fixed installation or mounted on withdrawablet ktrucks.They comply with IEC 60044‐2 Standards. The dimensions of the version used for fixed assembly comply with DIN 42600 Narrow type Standards. On the other hand, the ones installed on a withdrawable truck are the dedicated type. These transformers can have one or two poles, with performances and classes of precision suited to the functional requirements of the instrument connected to them.When they are installed on withdrawable trucks, they are fitted with medium voltage protection fuses.

Current transformerCurrent transformer

The current transformers, Tesar manufacturing, are of the type insulated in resin and are used for power supply to measuring instruments and protections. These transformers can either have a wound core or through bar with one or more cores, with performance and precision classes suited to the installation requirements.They comply with IEC 60044‐1 Standards.Their dimensions are usually according to the DIN 42600 Narrow Type Standard, in the Medium and Long Size versions. The switchgear unit can be equipped with one or two sets of three transformers.versions. The switchgear unit can be equipped with one or two sets of three transformers.

TESAR instrument transformers

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Protection against internal arcs

Characteristics of the switchgear

g

Internal fault test – CESI Laboratories

Standard / SpecificationsStandard / SpecificationsIEC 62271‐200

Loss of service continuity categoty (LSC) LSC2BInternal fault: short‐circuit current 25kAInternal fault: short‐circuit duration 0,5sInternal fault: classification IAC 

(initials for Internal Arc Classified) AFL( )

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Characteristics of the switchgear

Degrees of protectiong p

The degrees of protection of the switchboard comply with IEC 60529 / CEI EN 60529 Standards.SYSclad switchboard are normally supplied with the following standard degrees of protection:• external housing IP4X• inside the units IP2X

Environmental conditions

The switchgear ratings are guaranteed under the following environmental conditions:

Minimum ambient temperature ‐ 5 °C

Maximum ambient temperature + 40 °C

Maximum relative humidity 95%

Standards

The SYSclad and the main equipment it contains comply with the following Standards:

Maximum altitude 1000 m s.l.m.

In presence of unpolluted and non‐corrosive atmosphere

• IEC 62271‐1 for the general application• IEC 62271‐200 for the switchboard• IEC 62271‐102 for the earthing switch• IEC 60071‐2 for coordination of the insulation• IEC 62271‐100 for the circuit breaker• IEC 60470 for the contactor• IEC 60265‐1 for the switch‐disconnector.Th IEC 62271 200 St d d h i t d d it i di th d fi iti d l ifi ti f MVThe IEC 62271‐200 Standard has introduced new criteria regarding the definitions and classification of MV switchgear. One of the main changes introduced by this Standards is elimination of the classification of switchgear in metal‐clad, divided into compartments and in units. The classification of switchgear has been reviewed taking into account the viewpoint of the user, particularly regarding some aspects such as operability and maintenance of the switchgear, according to the requirements and expectations of good management of substations, from installation to dismantling. In this context, the “loss of service continuity” has been chosen as the fundamental criterion for the user.According to the updated standards SYSclad switchgear can be defined as follows:According to the updated standards, SYSclad switchgear can be defined as follows:1. Compartment with access controlled by an interlock

Compartment containing high voltage parts, designed to be open for normal service and/or normal maintenance, where access is controlled by the overall configuration of the switchgear and by the control apparatus.

2. Compartment with access based on a procedureCompartment containing high voltage parts, designed to be open for normal service and/or normal maintenance, where access is controlled by an adequate procedure associated with a locked status.maintenance, where access is controlled by an adequate procedure associated with a locked status.

3. LSC2BBusbar, feeder and apparatus compartments physically and electrically segregated.This category defines the possibility of opening one of the main circuit compartments keeping the other compartments and/or function units energised.

4. Partition classMetal‐clad switchgear and control apparatus which offer continuous metallic segregation and/or shutters (if applicable), destined to be earthed, among the freely accessed compartments and the live parts of the main circuit.The metallic segregations and shutters or the metallic parts of these, must be connected to the earthing point of the functional unit. 7

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Characteristics of the VCB

Generalities

SYSclad units is equipped with withdrawable WL/r vacuum circuit breaker.The circuit breaker is fitted with a truck for racking in and out of the switchgear with the door closed.The light and compact structure guarantees great sturdiness and excellent mechanical reliability.The operating mechanism and the poles are fixed to the metallic structure which also acts as the support for the moving contact actuation kinetics.

The WL/r circuit breaker use vacuum as the interruption and insulating medium.Thanks to the advance techniques used for their construction, the WL/r circuit breaker ensure high performances under all service conditions.The vacuum interrupter are embedded in the poles made of epoxy resin. This construction means the interrupter are unaffected by shocks, humidity and environmental pollution.The circuit breaker poles, making up the interruption part, are sealed for life pressure systems (IEC 62271‐100 and CEI 17.1 Standards) and are maintenance‐free.Th WL/ i it b k id d ith h i l t d ti h i ith f t i dThe WL/r circuit breaker are provided with mechanical stored energy operating mechanisms with free trip and allow opening and closing operations independent of the operator’s actions.

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Characteristics of the VCB

VCB type WL/r-C 12kV-17,5kV “CASSETTE” – Moving part

Predisposed for mounting inside to enclosuresp g

Tested and constructed in accordance whith IEC Standards

Compact dimensions

Long electrical and mechanical life

Resin poles with embedded interrupters

Sealed‐for‐life and maiontenance‐free poles

Vacuum Circuit Breaker WL/r‐C 12 WL/r‐C 17Rated voltage and isolation kV 12 17,5Withstand voltage ( 1 min ) kV (50 Hz) 28 (42) 38 (42)Lighting impulse withstand voltage kV 75 95Rated frequency Hz 50‐60 50‐60Use SYSclad‐C SYSclad‐C

Electrical characteristics

Rated current A (40°) 630 1250 1600 2000 2500 3150 630 1250 1600 2000 2500 3150

Short‐time withstand current (3 s) kA

16 ‐ ‐ 16 ‐ ‐20 20 20 20 20 2025 25 25 25 25 2531,5 31,5 31,5 31,5 31,5 31,5

Making capacity kA

40 40 40 40 40 4053 53 53 53 53 5363 63 63 63 63 6380 80 80 80 80 8080 80 80 80 80 80

Operation sequence 0‐0,3‐CO‐3s‐CO 0‐0,3‐CO‐3s‐COOpening time ms 40 … 60 40 … 60Breaking internal arc time ms 10 … 15 10 … 15Total breaking time ms 50 … 75 50 … 75Closing time ms 60 … 80 60 … 80

Overall dimensionHeight mm 645 712 737 645 712 737Width mm 502 652 852 502 652 852Depth mm 679 658 663 679 658 663

Weight Kg 100 150 100 150 100 150 100 150 100 150 100 150Weight Kg 100 … 150 100 … 150 100 … 150 100 … 150 100 … 150 100 … 150

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Dimensions of the VCB

VCB type WL/r 12kV-17,5kV “CASSETTE” – Moving part

630A‐1250A

1600A‐2000A

VCB type WL/r 12kV-17,5kV “CASSETTE” – Moving part

/ TT

2500A‐3150A

VCB type WL/r 12kV-17,5kV “CASSETTE” – Moving part

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Characteristics of the VCB compartment

VCB type WL/r-C 12kV-17,5kV “CASSETTE” – Cradle

Predisposed for mounting inside to enclosures

Tested and constructed in accordance whith IEC Standards

Compact dimensions

Long electrical and mechanical life

Bushing made in cast resin

Can be equipped whit earthing switch

Module C1–63‐12 C1–16‐20 C1–25‐31 C2–63‐12  C2–16‐20 C2–25‐31Width of module mm 600 800 1000 600 800 1000Rated voltage and isolation kV 12 17,5Withstand voltage ( 1 min ) kV (50 Hz) 28 (42) 38 (42)Lighting impulse withstand voltage kV 75 95

Rated current A (40°) 630 1250 1600 2000 2500 3150 630 1250 1600 2000 2500 3150

Short‐time withstand current (3 s) kA

16 ‐ ‐ 16 ‐ ‐20 20 20 20 20 2025 25 25 25 25 2531,5 31,5 31,5 31,5 31,5 31,5

Making capacity kA40 40 40 40 40 4053 53 53 53 53 5363 63 63 63 63 63

Weight Kg 100 … 150 100 … 150 100 … 150 100 … 150 100 … 150 100 … 150

Use SYSclad‐C SYSclad‐C

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Dimensions of the VCB compartment

SYSclad “CASSETTE” type – Cradle

Current (A)

630A÷3150A

Dimensions(mm)

630‐1250 1600‐2000 2500‐3150

Front 600 800 1000

Lenght 700 700 700g

Height 1035 1035 1035

SYSclad “CASSETTE” type – Complete panels

630A÷3150A

Dimensions of switchboard

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Electric circuit diagrams

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Note

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Due to continuous development in materialand updating of Standards date reportedand updating of Standards, date reportedare not binding and subject to our revision.

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YS

clad

002

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Via del Commercio 12/14 - 26900 Lodi – Italy – www.sarel.itTel 0039 0371- 4906.1 Fax 0039 0371- 411.422 E-mail [email protected]