73
6.2.2 Circuit-breaker - type VD4 and V-max
Charging the stored energy spring system:
• On the circuit-breaker with charging motors, charging is carried out automatically. If the charging
motor should fail, the charging procedure can be carried out or completed manually;
• On breakers with manual charging systems, either open the door with the withdrawable part in the
disconnected position, insert charging lever 128 (figure 118) into the recess and pump for approx.
25 strokes until the charged condition is indicated;
• On breakers where the charging lever is integrated, take the lever and pump 10 times;
• When the charged condition is reached, the charging mechanism is automatically disengaged, and
any further strokes of the lever have no effect. Pumping is effective if the lever is moved in angle 90°
(figure 119).
Opening and closing the circuit-breaker:
• Opening and closing operations with the withdrawable part in the service position should only be
performed with the door closed;
• Operate the local or remote electrical control;
• Observe the switch position indicator.
The switching operation counter 13.5 for the circuit-breaker automatically increases by one unit with
each operating cycle. An additional control mechanism fitted in the door of the circuit-breaker
compartment enables mechanical operation of the circuit-breaker with the door closed and with the
withdrawable part in either position.
• Press the relative mechanical pushbutton, having previously turned knob 45.2 (figure 7) anti-
clockwise to the stop if the withdrawable part is in the service position;
• Observe the switch position indicator.
For further details regarding operations and maintenance of VD4 and V-max circuit-breakers, see the
relative instruction manuals.
13.1
13.8
13.4
13.5
128a
13.11
13.213.12
90°
Figure 119: Manual operation of withdrawable part with
Vmax circuit-breaker.
Figure 118: Manual operation of withdrawable part with
VD4 circuit-breaker (old design).
13.1 Mechanical ON push-button
13.2 Mechanical OFF push-button
13.4 Mechanical switch position indicator
13.5 Mechanical operating cycle counter
13.8 Charging condition indicator
13.11 Sliding handle, connected with the
catch on the withdrawable assembly
13.12 Locking OFF position
128 Charging lever
128
13.11
13.8
13.4
13.2
13.5
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