C
OMMISSIONING
REV7
/REV6
OI 250 (EN)
7.6.7
Checking the Anti-Pumping System
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.
7.6.8
Check Synchronized Operation
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.
7.6.9
Checking the Functional Lockout
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.
7.6.10
Operations Counter
• Check the operation of the operations counter.
• Read the count shown on the counter and enter the values in the
checklist.
Summary of Contents for GL 311 F3/4031 P/VE
Page 2: ......
Page 10: ...INTRODUCTION 10 146 OI 250 EN REV7 REV6...
Page 12: ...SAFETY 12 146 OI 250 EN REV7 REV3...
Page 48: ...INSTALLATION 48 146 OI 250 EN REV7 REV7...
Page 80: ...INSPECTION AND MAINTENANCE 80 146 OI 250 EN REV7 REV3...
Page 102: ...RECONDITIONING 102 146 OI 250 EN REV7 REV7...
Page 104: ...END OF LIFE MANAGEMENT 104 146 OI 250 EN REV7 REV2a...
Page 114: ...SPECIAL EQUIPMENT OPTIONAL 114 146 OI 250 EN REV7 REV0...
Page 128: ...REPLACEMENT PARTS AND ACCESSORIES 128 146 OI 250 EN REV7 REV6...
Page 130: ...HANDLING USED SULFUR HEXAFLUORIDE 130 146 OI 250 EN REV7 REV2...
