ABB K-Line 225A - Page 3

IB 6.1.12.1-1C
3
ABB
Charging Operation ..............................................................................................................................................11
Electrically Operated Mechanism........................................................................................................................11
Manually Operated Mechanism...........................................................................................................................12
Closing Operation..................................................................................................................................................12
Electrically Operated Mechanism........................................................................................................................12
Manually Operated Mechanism...........................................................................................................................12
Opening Operation ................................................................................................................................................12
Slow-close Procedure.............................................................................................................................................12
Electrically Operated Mechanism........................................................................................................................12
Manually Operated Mechanism...........................................................................................................................13
INSTALLATION AND REMOVAL.................................................................................14
Stationary Type......................................................................................................................................................14
Draw-out Type .......................................................................................................................................................14
MAINTENANCE ............................................................................................................ 15
Inspection ...............................................................................................................................................................15
Arc Chutes ...........................................................................................................................................................15
Contact Structure .................................................................................................................................................16
Control Circuitry..................................................................................................................................................16
Disconnects..........................................................................................................................................................16
Fasteners ..............................................................................................................................................................16
Lubrication...........................................................................................................................................................16
Structural Insulation.............................................................................................................................................17
Setting Adjustments ..............................................................................................................................................17
Contact Structure .................................................................................................................................................17
Control Relay Device ..........................................................................................................................................20
Close Latch Release Rod Travel..........................................................................................................................20
Trip Latch Engagement .......................................................................................................................................20
Tripper Bar Travel ...............................................................................................................................................20
Shunt Trip Device................................................................................................................................................21
Magnetic Latch Device........................................................................................................................................22
Electro-Mechanical Overcurrent Trip Device (OD) ............................................................................................22
Solid-state Overcurrent Trip Device....................................................................................................................23
Microelectronic Overcurrent Trip Device ...........................................................................................................23
Operational Checks ...............................................................................................................................................23
Draw-out Shutter and Racking ............................................................................................................................23
Auto Spring Discharge ........................................................................................................................................23
Electrical Charging, Closing, and Opening .........................................................................................................23
Trip-free Mechanism ...........................................................................................................................................23
Anti-pump Circuit (EO).......................................................................................................................................23
Magnetic Latch Release.......................................................................................................................................23
Trip Latch Drag Force .........................................................................................................................................24
Current Path Resistance.......................................................................................................................................24
Insulation Withstand............................................................................................................................................24
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