Drive Structure - ABB VM1 Installation And Service Instructions Manual

6.3. Drive structure

The drive is of the magnetic type and basically consists of
the magnetic actuator (6) (Fig. 11), the control module (5), the
sensors (10), the capacitor/s (4) and the kinematics which
transmit the movement to the circuit-breaker poles.
The actuator (6) acts on the circuit-breaker poles by means of
special kinematics. The capacitor/s (4) provides/provide the
energy required for the operation.
The mechanical operating positions of the circuit-breaker are
detected by two due sensors (10).
The basic version of the circuit-breaker is fitted with the
following controls and instruments:
1
2
3
4
fig. 11
20
• closing pushbutton "I" (8)
• opening pushbutton "O" (9)
• coupling for manual emergency operation (1)
• mechanical position indicator (2)
• mechanical operation counter (3)
• luminous signalling of the "ready" state (7) (READY).
It is also possible to install auxiliary open/closed position
contacts (11) (accessory on request).
The control module (5) of the circuit-breaker consists of:
• a microprocessor
• opto-electrical input couplers
• output relay
• electronic power system for controlling the actuator coils.
11
5
6
7
8
9
10