Checking Of Interlock Conditions; Spare Parts, Auxiliary Materials, Lubricants; Spare Parts - ABB VM1 Instruction Manual

Caution:
Do not allow the withdrawable part to run up against a block when
the travel direction is incorrect! Switch the motor power off imme-
diately (the travel process functions electrically by a seal-in system
with limit position switch-off).
There may be a danger of injury when the door is open!
7.5.4

Checking of interlock conditions

(Figures 9/17 and 9/21)
1. The withdrawable part must only be movable from the test/
disconnected position into the service position when the
circuit-breaker is open .
Check this condition as follows:
- With the circuit-breaker closed, insertion of the with-
drawable part towards the service position must be
blocked after only half a turn of the crank in the clock-
wise direction, and the travel motor on motor-operated
withdrawable parts must not be capable of being
switched on.
Do not use force – max. torque 25 Nm!
2. The withdrawable part must only be movable from the
service position into the test/disconnected position with
the circuit-breaker open.
Check this condition as follows:
- With the circuit-breaker closed, withdrawal movement of
the withdrawable part must be blocked after only half a
turn of the crank in the anti-clockwise direction, and the
travel motor on motor-operated withdrawable parts must
not be capable of being switched on.
3. Closing of the circuit-breaker must only be possible when
the withdrawable part is in the defined test/disconnected
position or service position.
The control wiring plug 36.1 must previously have been
inserted.
Check this condition as follows:
- It must not be possible to close the circuit-breaker with
the withdrawable part in any position between the test/
disconnected position and the service position.
- Readiness for switching is established electrically when
the service position is reached by auxiliary switch -BT1 in
the withdrawable assembly switching over.
- For motion into the test/disconnected position, the same
enabling conditions apply analogously, in this case by
means of auxiliary switch -BT2 in the withdrawable as-
sembly.
4. After failure of the power supply, the circuit-breaker may
only be operated manually in the service position or in the
test/disconnected position:
a) Initially by pressing the OFF push-button 4, for
- up to 60 seconds for breaking currents up to 25 kA.
- up to 120 seconds for breaking currents up to 31.5 kA.
b) Manual emergency off switching using operating lever 28 is
possible beyond these times.
5. Withdrawable parts with order-related blocking magnet
-RL2 may not be moved in case of control power failure,
or when there is no control power. Do not forcibly move
blocked withdrawable parts! The blocking magnet -RL2
is only present on manually operated withdrawable parts
(Figure 9/28).
Releasing the blocking magnet -RL2:
- Remove front plate 1.1,
- Disengage blocking magnet -RL2 by pulling the magnet
armature,
- While doing so, turn crank 38 about one half turn (either
direction of rotation is permissible).
- The blocking magnet is only active in the test position
and service position. In intermediate positions it has no
effect.
7.6

Spare parts, auxiliary materials, lubricants

7.6.1

Spare parts

When parts are required, the serial number of the relevant with-
drawable breaker part or circuit-breaker should always be quoted.
Setting instructions are to be requested separately.
Withdrawable assembly of VM1:
- Manually movable withdrawable assembly :
See Drawing GCE 7003570, Sheets 1 and 2, for notes for set-
ting of auxiliary switches -BT2/-BT1 and slide blocker.
- Motor-driven withdrawable parts:
For notes on settings see drawing GCE 7003571
- Blocking magnet -RL2:
For notes on settings see drawing GCE 7003820, sheet 1
(table 2)
Instruction manual 504/05 | VM1 Vacuum circuit-breaker 19