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44
U n i G e a r Z S 1 I N S T A L L A T I O N , O P E R A T I O N A N D M A I N T E N A N C E
6.1.2 Cicuit-breaker - type VD4
Charging the stored energy spring system:
•
Automatic charging is carried out on a
circuit-breaker with charging motors. If the
charging motor fails, the charging procedure
can be carried out or completed manually
•
On breakers with manual charging systems,
take the lever and pump 8 or 9 times until the
charged condition is indicated (Fig. 70)
•
When the charged condition is reached, the
charging mechanism is automatically
disengaged. Any further strokes of the lever will
have no effect
•
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
13
13.11
124.4
124.1
124
—
Figure 66 Withdrawable part standing on
13
13.11
13.12
124
124.1
124.4
128a
13.11
—
Figure 67 Manual operation of the
service truck and secured in the
catches
Withdrawable part
Sliding handle
Catch (connected to sliding
handle 13.11)
Service truck
Height adjuster
Release lever for catch pin
•
Operate the local or remote electrical control
- observe the switch position indicator
•
The switching operation counter (Fig. 70) 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 (Fig. 71)
•
Press the relative mechanical pushbutton, having
first turned the knob anti-clockwise to the stop
position in the event that the withdrawable part
was in the service position
•
Observe the switch position indicator
13.2
13.1
90°
withdrawable part with V-max
circuit-breaker
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 to
the catch on the withdrawable
assembly
128a
Charging lever
13.4
13.8
13.5
—
Figure 68 Handling of the mechanical
circuit - breaker operation in the
switchgear panel door with the
withdrawable part in the service
position
45.1
Mechanical pushbutton
45.2
Knob
45.2
45.1
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