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VM1/A/P
- INSTALLATION AND SERVICE INSTRUCTIONS ANSI: ... 15 KV; ... 2000 A; ... 31.5 K A
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4. Insertion and removal, putting into service
4.2. Putting into service
4.2.1. General procedures
WARNING
All the operations regarding putting into
service must be carried out by abb personnel
or by suitably qualified customer personnel
with in-depth knowledge of the apparatus
and of the installation. Should the
operations be prevented, do not force the
mechanical interlocks and check that the
operating sequence is correct. The operating
forces which can be applied for racking-in
withdrawable circuit breakers is < 25 nm.
Closing in case of a power failure
Closing is not advisable and is not possible.
Manual emergency opening
Use the crank handle 1 (Fig. 3) for manual
emergency operation.
Proceed as follows:
•
couple the crank handle (1) in the seat (2)
•
turn the crank handle (1) counterclockwise as far as
the end-of-run position
• if the circuit breaker is in the racked-in position in
the switchgear/enclosure, it is now possible to take
it to the isolated position.
4.2.2. Operation of the circuit breaker
Closing
This can be carried out remotely by applying voltage
at the -SC2 input, or locally by pressing the “I”
pushbutton on the front of the circuit breaker.
Opening
This can be carried out remotely by applying voltage
at the -SO2 or -SO3 input, or locally by pressing the
“O” pushbutton on the front of the circuit breaker.
Opening in case of a power failure
Opening can be carried out remotely by means of
the control system, or locally by pressing the “O”
pushbutton on the front of the circuit breaker
within 60 s from the power failure.
Notes
•
Manual emergency opening is possible even after the 60 s time limit.
•
In the case of a power failure and after the 60 s time limit, the circuit
breaker remains in its present position. If automatic opening is required
after the 60 s time limit, Dip Switch “I 1004/1” must be enabled (see pag.
31 Fig.13. Auto-shutdown function for low voltage of the capacitor/s).
Fig.3
Summary of Contents for VM1/A/P
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