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C
OMMISSIONING
OI 250 (EN)
REV7
/REV6
7.2
Gas Piping
As an option, the circuit breaker may be equipped with a separate
density monitor for each pole. The respective operations must then
be carried out for each pole.
The rated pressure (ND) is shown on the nameplate and the den-
sity monitor (black dot on the density monitor indicator).
If there is any doubt about the gas quality, always check it
“Checking the Gas Quality” on Page 79)
Contamination of breaker gas by foreign gases is not permitted.
Make sure that the filling hose is filled with SF
6
before the filling
operation. In case of doubt, purge the filling hose before the filling
operation.
The density monitor indication can be checked using a test
manometer and a thermometer. The indicated value of the test
manometer must be corrected as a function of the ambient tem-
perature in accordance with the SF
6
pressure curve.
The pressurized components of the pole columns can be dama-
ged by improper handling. If the components are damaged, they
may burst when the gas pressure is increased. This can result in
serious personal injury or property damage.
Therefore:
- Inspect the pole columns visually for damage before be-
ginning the filling operation.
- Carry out the filling operation from a protected position.
WARNING
If the rated pressure is exceeded, it may cause the pressure reli-
ef device to respond.
Therefore:
- Never set the pressure reducing valve of the gas-filling de-
vice higher than the rated breaker pressure.
CAUTION
Содержание GL 311 F3/4031 P/VE
Страница 2: ......
Страница 10: ...INTRODUCTION 10 146 OI 250 EN REV7 REV6...
Страница 12: ...SAFETY 12 146 OI 250 EN REV7 REV3...
Страница 48: ...INSTALLATION 48 146 OI 250 EN REV7 REV7...
Страница 80: ...INSPECTION AND MAINTENANCE 80 146 OI 250 EN REV7 REV3...
Страница 102: ...RECONDITIONING 102 146 OI 250 EN REV7 REV7...
Страница 104: ...END OF LIFE MANAGEMENT 104 146 OI 250 EN REV7 REV2a...
Страница 114: ...SPECIAL EQUIPMENT OPTIONAL 114 146 OI 250 EN REV7 REV0...
Страница 128: ...REPLACEMENT PARTS AND ACCESSORIES 128 146 OI 250 EN REV7 REV6...
Страница 130: ...HANDLING USED SULFUR HEXAFLUORIDE 130 146 OI 250 EN REV7 REV2...