technical leaflet 2010 medium voltage distribution rm6 24...

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


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


Applications

Private metering

Possible confi guration:

RE-IIBc DE-Mt LE-DD


RE-QIQI DE-QQ DE-QQ


DE-BB DE-IDIc DE-BB DE-DI

200A630A 200A

Switching large site

Connection to MV network


630A630A 630A630A 200A200A

Double radial



PE90081

PE90075

PE990160

Technical leaflet 2010RM6 24 kV - Ring Main Unit Medium Voltage Distribution

Applications


RE-QIQI DE-QQ

Large transformer substation



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*


* 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


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


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


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


No-load transformer breaking capacity I3 (A) 16 16 16 16 16 16 16



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




B

630A

D

Transformer feeder by disconnecting circuit-breaker


No-load transformer breaking capacity I3 (A) 16 16 16 16 16 16 16



200A

630A

RM6 24 kV - Ring Main Unit


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

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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.


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

technical leaflet 2010 medium voltage distribution rm6 24...

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