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42
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 Operation of the switchgear
Note on safety at work
All relative work and operating procedures must
be carefully carried out by trained specialists
familiar with the installation, taking into account
all the relative safety regulations according to the
IEC and other relevant professional bodies, as well
as any local and work regulations and instructions.
6.1 Switching operations
6.1.1 Withdrawable circuit-breaker part
Manual insertion from the test/disconnected
position to the service position:
•
Connect the control wiring plug (Fig. 64)
•
Close the front door
•
Ensure that the apparatus is in the OFF position
•
Fit the hand crank onto the square spigot of
the spindle mechanism after the hole has been
opened for it by turning the slide. The slide is
turned using a knob (Fig. 65)
—
Figure 61 The control wiring plug connector is blocked to
Warning:
Do not walk on the top surfaces of the
switchgear panels as they contain rupture
points for pressure relief which could be
damaged!
Carry out switching operations with the
front doors closed!
prevent disconnection with the withdrawable part
in the service position
•
Turn the crank clockwise (approx. 20 turns)
until the stop is reached and the withdrawable
part is in the service position (Fig. 66)
•
Observe the position indicator
•
Remove the hand crank
The spring loaded pin head will lie completely on
the rear side of the panel door when the hand
crank is moved from the square spigot of spindle
mechanism. This ensures that the rear part of the
pin head has been shifted onto the hexagonal
cap of the spindle and prevents unintentional
wrenching of the spindle during panel service.
Wrenching may lead to the circuit-breaker blocking.
Note:
The withdrawable part must not be stopped in
any intermediate position as it is moved between
the service and test/disconnected positions!
Manual withdrawal from the service position to
the test/disconnected position:
•
Ensure that the apparatus is in the OFF position
•
Reverse the procedure described above for
insertion into the service position
—
Figure 62 Before inserting the hand crank, it is
necessary to open the hole for it. To do this,
turn the slide by means of the key
145
121.1
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