ABB VM1-T Manual page 29

M E D I U M V O LTA G E P R O D U C T S
26 10 8
5 6
Figure 9/25: View of the operating mechanism of the VM1-T circuit
breaker with auxiliary devices, front plate removed.
5 Mechanical operating cycle counter
6 Mechanical position indicator
8 Receptacle for emergency manual opening lever
10 Magnetic actuator
15 Sensor for "circuit breaker OFF" signal (top)
16 Sensor for "circuit breaker ON" signal (bottom)
26 Storage capacitors
27 Circuit breaker control unit
27.1 Plug connector for outputs -BB4, -DR, -DN, -DO1, -DC1
27.2 Plug connector for supply voltage
27.3 Plug connector for inputs (filter card not shown)
45 Power output
60 Filter card
27.2 60 45 27.3
15 16 27
27.1
41.3 41.2
Unlocked
41.4 35.5
41.3 41.2
Locked
41.4 35.5
Figure 9/26: 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
-RL2
Figure 9/27: 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
29
41.1 41.5
41.1 41.5
41