Knkong Electric Co.,Ltd

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Home    Switchgear    Gas Insulated SF6 ring main unit switchgear 11kv Ring Main Unit

Gas Insulated SF6 ring main unit switchgear 11kv Ring Main Unit

Indoor switchgear
SF6 Metal-Clad Enclosed Ring Main Unit
12 24 36KV,50/60Hz, 630、1250A
OEM & ODM,Complete equipment
Meet IEC standards
Send us your SLD (Single Line Drawing) or requirements ,we design switchgear plan for you
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Product Introduction

 

  • General

This RMU switchgear using SF6 as arc extinguishing medium with double open contacts, 3 working-position and rotating contact which placed in an epoxy resin shell of a reinforced structure. Each gas box must pass helium leak detection before being filled with 0.045Mpa SF6 (Inspect any leakage to ensure can be installed vertically or horizontally). The classic installation is "horizontal", that is, install steel partitions between the cable compartment and the busbar compartment. That makes the interval between the busbar and the cable joint the most stringent safety requirements.

 

  • Standard
  1. ISO 780-1997,MOD.           
  2. IEC 62271-102:2002,MOD
  3. IEC 60265-1:1998,MOD
  4. IEC 60298:1990
  5. IEC 60529:1989
  6. IEC 507:1991
  7. IEC 60694:1996
  8. IEC 60420:1990

 

  • Service environment
  1. Air temperature: -35~+40
  2. Humidity: Monthly average 95%; Daily average 90% .
  3. Altitude :≤ 1000m (Up to 5000 m can be custom)
  4. Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
  5. No frequent violent shake

 

 

 

 

Technical Data 

No.

Item

Unit

Parameter

Cabinet size

1

Rated voltage

kV

12

24

12kV

2

Rated frequency

Hz

50/60

Load switch
cabinet

Low voltage
compartment

Circuit breaker
cabinet

3

Rated current

A

630/1250

mm

mm

mm

4

1min Power frequency withstand voltage

kV

Alternate/
Phase to ground

42

65

W*D*H

H

W*D*H

Primary isolation

48

79

375/500/750
*
1000
*
1635/1885

350/450

800
*
1000
*
2000

5

Lightning impulse withstand voltage

kV

Alternate/
Phase to ground

75

125

24KV

Primary isolation

85

145

Load switch
cabinet

Low voltage
compartment

Circuit breaker
cabinet

6

Rated short circuit breaking current

KA

Main circuit

20

20

mm

mm

mm

Ground loop

20

17.4

W*D*H

H

W*D*H

7

Rated short-circuit withstand current duration

S

4

4

600
*
1130
*
2000

710

800
*
1000
*
2000

8

Rated peak withstand current

kA

50

50

Optional components
Electric operating-AC 220/110V; DC 24/48/110/220V
Auxiliary contact 5 NO 5 NC
Full set of fuse
FTU communication interface

9

Transfer current

A

1700

1200

10

Protection class

IP3X

11

Mechanical life of load switch

5000 times

12

Mechanical life of earthing switch

2000 times

 

 

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