Checking The Anti-Pumping System; Check Synchronized Operation; Checking The Functional Lockout; Operations Counter - GE GL 311 F3/4031 P/VE Operating Instructions Manual

7.6.7

Checking the Anti-Pumping System

7.6.8

Check Synchronized Operation

7.6.9

Checking the Functional Lockout

7.6.10

Operations Counter

REV7
/REV6
Type with Closing Priority (Standard)
• Circuit breaker in open position:
• Apply a continuous electrical opening command and at the same
time give an electrical closing command: the circuit breaker will
complete just one closing operation and one opening operation.
• Circuit breaker in closed position:
• Apply a continuous electric closing command and at the same
time give an electric opening command: the circuit breaker will
complete just one opening operation.
Type with Opening Priority (Optional)
• Circuit breaker in open position:
• Apply a continuous electrical opening command and at the same
time give an electrical closing command: the circuit breaker will
not execute a closing operation.
• Circuit breaker in closed position:
• Apply a continuous electric closing command and at the same
time give an electrical opening command: the circuit breaker will
complete just one opening operation.
• After removal of the opening command, the circuit breaker is not
allowed to carry out a closing operation.
The anti-pumping system is automatically reset if there are no more
operating commands.
Synchronized pole-unit operation ensures that all pole columns will
be in the same operating position in continuous operation. The
synchronized pole-unit mechanism does not react to short single-
pole interruptions (generally 300 ms).
• All of the circuit breaker's pole columns must be in the closed
position.
• Open one pole column manually using the manual operating lever
in the operating mechanism. After the time set on the time relay
has expired (generally two seconds), the two pole columns still in
closed position will also open.
The contacts of the density monitor will close when the gas pressu-
re drops.
• Jumper the UW2 density monitor contacts at the terminal strip.
• Give one closing command and one opening command. The
circuit breaker must not carry out any switching operations.
• Remove the jumpers from the terminal strip.
• Check the operation of the operations counter.
• Read the count shown on the counter and enter the values in the
checklist.
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