SM6-12/24/36 unit type ring main unit(RMU)
General SM6-Moule type RMU with SF6 load switch as main switch, for whole cabin…
SM6-12/24/36 unit type ring main unit(RMU)

SM6-12/24/36 unit type ring main unit(RMU)

Detailed description

  • Description
  • Technical data

General


          SM6-Moule type RMU with SF6 load switch as main switch, for whole cabinet is suitable for electric distribution automation and compact also expandable metal close switchgear.It characters in its simple structure, flexible  operation, reliable interlocking and convininent installation etc. It also can be assembly with RCB series VCB with permanet magnet mechanism.


No

Item 

Unit

Parameter

1

Rated voltage

kV

12

24  

36

2

Rated current

A

630/800

3

Rated frequency

Hz

50/60

4

1min Power frequency withstand voltage

wet

kV

38

50

70

dry

kV

48

60

80

5

Lightning impulse withstand voltage Common value

kV

75

125/150

125

6

Rated transfer current

A

1700

1200

     800 

7

Rated active load and close circuit breaking current

A

63

  50

   50/40

8

Rated cable charge breaking current

A

50 and 10

9

Rated short circuit breaking current

kA

 80

 63

50/40

10

Rated short circuit making current (peak)

kA

63

50

63

50

11

Short time (2s) withstand current, load switch/earth

kA

25/20

20/20

25/20

20/20

12

Rated withstand current (peak)

kA

80

63

50/40

13

Mechanism life

Times

5000

2000

2000

Remarks * Rated current of combination of switch and fuse decided by the fuse current.

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