RM6 24 kV - Ring Main Unit
Medium Voltage Distribution
Extension offer: new possible combinations 2 and 3 functions
RM6 range: dedicated to MV secondary underground distribution networkThe RM6 is a compact unit combining all MV functional units to enable connec-tion, supply and protection of transformers on an open ring or radial network:• by a fuse-switch combination,• by a circuit-breaker with protection unit.
The switchgear and busbars are enclosed in a gas-tight chamber, filled with SF6 and sealed for life. RM6 is a rigorous, pre-tested and factory-built switchboard compliant with international standards.
A wide choice of functional units
Line fee-der 630 A circuit-breaker
Transfor-mer fee-der 200 A circuit-breaker
Trans-former feeder combined fuse-switch
Cable connec-tion
Network coupling switch
Network coupling 630A circuit-breaker
O IC BCNetwork switch
I B D Q
Technical leaflet 2010
700 possible combinations for RM6 2 and/or 3 functions compatible with RM6 standard offerPossible combinations of RM6 2 functions
Type of tank• NE: non extensible.• RE: extensible to the right.• LE: extensible to the left.• DE: extensible to the right or left.
Function 2 Function 1
IBDQO
IBDQO
Possible combinations of RM6 3 functions
Function 3 Function 2 Function 1
IBDQ
IcBc
O*
*
IBDQO
IBDQO
* possible only when RM6 is RE or DE.
Keeps all the advantages of existing RM6 range.This new extension range keeps all the advantages of existing RM6 offer.
• Approved quality- Design and production certified ISO 9000.- Experience from 1,000,000 functional units installed all over the world.- Compliance with international standards: IEC 60265-1, 62271-1, 62271-200, 62271-100, 62271-102, 62271-105, 60255.• Personal safety insurance through- Visible earthing.- Internal arc withstand in conformity with IEC 62271-200.- Dependable 3-position indication.• High reliability in harsh environment: stainless steel sealed tank.• Respect of the environment.- End of life gas recovery possible.- Environmental management system certified to ISO 14001.• Compact- All functional units embedded in one sealed tank.- Optimized dimensions.• Extensible: right, left, double...• Fast and simple installation.
RM6 free combination: offers all types of configurations which fit to every application.
• Free choice: type of each functional unit.• Free choice: all the options for each function.• Safer, easier installation, cost saving than adding several single extensible functions.• Compatible with RM6 standard offer.
• Quick and simple site installation • Compactness• Innovative choice of arrangement inside the tank.• Less maintenance operations.
200A630A 630A
RM6 2 functions combinations - examples
RM6 3 functions combinations - examples
DE-DD DE-QQ RE-QD
RE-IDD LE-QDI
DE-DII RE-IIBc RE-QQQ
DE-BBD DE-IIIc
LE-IO
Technical leaflet 2010RM6 24 kV - Ring Main Unit
Medium Voltage Distribution
Configurations
Function Width
NE L = 1532 mm
LE L’ = 1532 + 30 = 1562 mm
RE L’ = 1532 + 30 = 1562 mm
DE L’ = 1532 + 60 = 1592 mmLL’
1142
mm
L
Function Width
NE L = 1052 mm
LE L’ = 1052 + 30 = 1082 mm
RE L’ = 1052 + 30 = 1082 mm
DE L’ = 1052 + 60 = 1112 mmL
1142
mm
L’ L
RE-IOO
Examples of typical applications
Technical leaflet 2010RM6 24 kV - Ring Main Unit
Medium Voltage Distribution
Applications
Private metering
Possible confi guration:
RE-IIBc DE-Mt LE-DD
Possible confi guration:
RE-QIQI DE-QQ DE-QQ
Possible confi guration:
DE-BB DE-IDIc DE-BB DE-DI
200A630A 200A
Switching large site
Connection to MV network
Connection to MV network
630A630A 630A630A 200A200A
Double radial
Connection to MV network
Connection to MV network
PE90081
PE90075
PE990160
Technical leaflet 2010RM6 24 kV - Ring Main Unit Medium Voltage Distribution
Applications
Possible confi guration:
RE-QIQI DE-QQ
Large transformer substation
Connection to MV network
Connection to MV network
Satellite MV consumer substation
Cable connection to Utility networkNE-BDD
200A630A 200A
PE90159
NE-ODD
Separate MV consumer substation
Consumerroom
Utility room
Connection to the open ring
630A
Cable connection
200A 200A
PE90210
PE90076
RM6 24 kV - Ring Main Unit Medium Voltage Distribution
Detailed characteristics for each type of function
Detailed characteristics for each function*
Technical leaflet 2010
* Not applicable for fuse-switch function
Rated voltage Ur (kV) 12 12 17.5 24 24 24 24
Short-time withstand current* Ik (kA rms) 21 25 21 12.5 16 16 20
tk Duration (s) 1 1 1 or 3 1 1 1 1 or 3
Rated current busbars Ir (A) 630 630 630 630 630 630 630* For all additional information (technical, accessories…) please see RM6 commercial global range catalogue.
Cable connection
Rated current Ir (A) 630 630 630 630 630 630 630
O
Bus coupler by switch-disconnector
Rated current Ir (A) 630 630 630 400 400 630 630
Breaking capacity
Active load I1 (A) 630 630 630 400 400 630 630
Earth fault I6a (A) 320 320 320 320 320 320 320
Cable charging I4a (A) 110 110 110 110 110 110 110
Making capacity of switch Ima (kA peak) 52.5 62.5 52.5 31.25 40 40 50
and earthing switches
IC
Bus coupler by disconnecting circuit-breaker
Rated current Ir (A) 630 630 630 630 630 630 630
Short-circuit breaking capacity Isc (kA) 21 25 21 12.5 16 16 20
Making capacity Ima (kA peak) 52.5 62.5 52.5 31.25 40 40 50
BC
Network switch
Rated current Ir (A) 630 630 630 400 400 630 630
Breaking capacity
Active load I1 (A) 630 630 630 400 400 630 630
Earth fault I6a (A) 320 320 320 320 320 320 320
Cable charging I4a (A) 110 110 110 110 110 110 110
Making capacity of switch Ima (kA peak) 52.5 62.5 52.5 31.25 40 40 50
and earthing switches
I
Transformer feeder with fuse-switch protection
Rated current Ir (A) 200 200 200 200 200 200 200
No-load transformer breaking capacity I3 (A) 16 16 16 16 16 16 16
Short-circuit breaking capacity Isc (kA) 21 25 21 12.5 16 16 20
Making capacity Ima (kA peak) 52.5 62.5 52.5 31.25 40 40 50
20
16
21
52
20
16
25
62
20
16
21
52
20
16
12
31
20
16
16
40
20
16
16
40
20
16
20
50Q
Line protection feeder by disconnecting circuit-breaker
Rated current Ir (A) 630 630 630 630 630 630 630
Short-circuit breaking capacity Isc (kA) 21 25 21 12.5 16 16 20
Making capacity Ima (kA peak) 52.5 62.5 52.5 31.25 40 40 50
B
630A
D
Transformer feeder by disconnecting circuit-breaker
Rated current Ir (A) 200 200 200 200 200 200 200
No-load transformer breaking capacity I3 (A) 16 16 16 16 16 16 16
Short-circuit breaking capacity Isc (kA) 21 25 21 12.5 16 16 20
Making capacity Ima (kA peak) 52.5 62.5 52.5 31.25 40 40 50
200A
630A
RM6 24 kV - Ring Main Unit
Medium Voltage Distribution
General characteristics
Schneider Electric Industries SASHead Office35, rue Joseph MonierCS 3032392506 Rueil-Malmaisonwww.schneider-electric.com
As standards, specifications and designs change from time to time, please ask for confirmation of the information given in this publication.
This document has been printed on ecological paper.
Publishing: SYNTHESE ECA, Schneider Electric.Photos: Schneider ElectricPrinting:
06/2010
AR
T838
011
- ©
Sch
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lect
ric In
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trie
s S
AS
- A
ll rig
hts
rese
rved
AMTED310019EN
IEC standards
General operation conditions for indoor switchgears
IEC 62271-1 (common specifications for high voltage switchgear and controlgear)
IEC 62271-200 (A.C. metal enclosed switchgear and controlgear for rated
voltage above 1 kV and up to and including 52 kV)
Switch-disconnectors
IEC 60265-1 (high voltage switches for rated voltage above 1 kV and less than 52 kV)
Circuit breakers: 200 A feeder or 630 A line protection
IEC 62271-100 (high voltage alternating current circuit breakers)
Other applicable standards
Switch-fuse combinations: IEC 62271-105: alternating current switch-fuse combination
Earthing switch: IEC 62271-102: alternating current disconnectors and earthing switches
Electrical relays: IEC 60255.
Technical leaflet 2010
Main electrical characteristics
Rated voltage Ur (kV) 12 17.5 24
Frequency f (Hz) 50 or 60
Insulation level
Industrial frequency Ud (kV rms) 28 38 50
50 Hz 1 min.
Impulse 1.2/50 µs Up (kV peak) 75 95 125
Tank internal arc withstand 20 kA 1 s
12
50
20
75
28
50
17
0
s
95
38
0
24
50
12
Climatic conditions
(°C) 40 45 50 55 60
Busbars 630 A Ir (A) 630 575 515 460 425
Functions: I, O, B (with bushing type C) (A) 630 575 515 460 425
Function D (with bushing type B or C) (A) 200 200 200 200 200
Function Q (A) (1) (2) (2) (2)
(1) depends on fuse selection.(2) consult us.
PE90209
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