ABB VM1 - Page 31

Instruction manual 504/05 | VM1 Vacuum circuit-breaker 31
Figure 9/26: View of the operating mechanism
of the VM1 circuit-breaker with
auxiliary equipment, front plate
removed.
5 Mechanical operating cycle
counter
6 Recess for emergency manual
opening lever
10 Magnetic actuator
15 Sensor for “circuit-breaker
OFF“ signal
16 Sensor for “circuit-breaker
ON“ signal
26 Storage capacitor
27 Circuit-breaker control unit
27.1 Plug connector for outputs
-BB4, -DR, -DN, -DO1,
-DC1, -DO2
1)
and -DC2
1)
27.2 Plug connection for inputs
-RL1, -MO1, -MC, -MU
1)
and -MO2
27.3 Plug connector for supply
voltage -MS
27.4 Earthing strip
1)
Full version only
Figure 9/28: Manually movable withdrawable part, front plate removed.
-RL2 Blocking magnet for the withdrawable part
(only on manually movable parts)
41 Mechanical interlock between the withdrawable
assembly and the circuit-breaker
Figure 9/27: Mechanical interlock between the withdrawable assembly
and the circuit-breaker, setting of the slide blocker.
View from front
35.5 Pawl in the withdrawable assembly
41.1 Fixing sheet
41.2 Slide blocker
41.3 Revolute joint
41.4 Base plate of the circuit-breaker
41.5 Screw
10 8 27.3
I 1001
27.2
I 1004
I 1002
27.1
27.4
27
5 6 2615/16
-RL2 41
Unlocked
Locked
BA 504-05 GB_29102012.indd 31 30.10.12 13:45