50 Hz: G625 - G690 - G750XW/XF
OPERATION & MAINTENANCE MANUAL
83
60 Hz: G655 - G750 - G800 - G850XW/XF
MAIN BREAKER OPERATION
CONTENTS
GENERAL ..............................................................................................................................................................
84
TYPES AND DESCRIPTIONS.........................................................................................................................
84
PARTS AND FUNCTIONS ..............................................................................................................................
88
OPERATION ..........................................................................................................................................................
92
CHARGING AND OPENING OPERATION .....................................................................................................
92
CHARGING OPERATION .........................................................................................................................
92
Manual charging ..................................................................................................................................
92
Motor charging.....................................................................................................................................
93
CLOSING OPERATION ............................................................................................................................
93
Manual closing.....................................................................................................................................
93
Electrical closing ..................................................................................................................................
93
OPENING OPERATION ............................................................................................................................
93
Manual opening ...................................................................................................................................
93
Electrical opening ................................................................................................................................
93
MOTION OF TRIP INDICATION AND SPRING CHARGE INDICATION SWITCHES ..............................
93
Motion of operation mechanisms.........................................................................................................
94
DRAW-OUT AND INSERTION OPERATION ..................................................................................................
96
GENERAL..................................................................................................................................................
96
Operation Durability .............................................................................................................................
96
DRAW-OUT OPERATION .........................................................................................................................
97
Moving the breaker body from the CONN. position to the TEST position ...........................................
97
Moving the breaker body from the TEST position to the ISOLATED position .....................................
98
Moving the breaker body from the ISOLATED position to the removed position ................................
98
PUTTING THE BREAKER BODY BACK INTO THE DRAW-OUT CRADLE............................................
98
Putting the breaker body back to the ISOLATED position...................................................................
98
Moving the breaker body from the ISOLATED position to the TEST position .....................................
99
Moving the breaker body from the TEST position to the CONN. position ...........................................
99
CONTACT STATUS OF AUXILIARY AND POSITION SWITCHES.......................................................
100
ON-OFF BUTTON COVER LOCKING PROCEDURE........................................................................................
101
LOCK IN OFF PROCEDURE .......................................................................................................................
101
POSITION LOCK LEVER LOCKING PROCEDURE ....................................................................................
102
BREAKER FIXING BOLT SECURING PROCEDURE ....................................................................................
96
OCR COVER LOCKING PROCEDURE ..........................................................................................................
96