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T
ROUBLESHOOTING
REV7
/REV2
OI 250 (EN)
8
Troubleshooting
8.1
Electrical Switching Commands Are Not Correctly Executed
• Check the control voltage.
• Check the gas pressure on the density monitor. If the gas
pressure is UW2 or less, no switching commands will be
executed.
• Check the charging state of the closing spring. If the closing
spring is not charged, no closing operations can be carried out. It
is possible that a motor protection switch has tripped and
disconnected the charging motor from the power supply.
• Check the shunt releases. Replace defective coils, determine the
cause of a potential overload and eliminate the cause.
• Check the terminal connections to make sure they are tight and
properly connected.
• Check the contactors in the faulty control circuit.
• Check the electric operating points of the density monitor.
Work on the control system involves the danger of electric shock.
Sudden movements of the charging system or the breaker linka-
ge can cause serious injury.
Troubleshooting tasks should be handled by qualified staff only.
Such staff must follow the safety rules of electrical engineering.
DANGER
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...