Advertisement
Failure Report
5. Component responsible (Many alternatives may be selected)
COMPONENT AT SERVICE VOLTAGE
Making and breaking unit
Current collector hub
Plug
Laminar contact
Top cap
Interrupting Chamber insulator
Vacuum interrupter
Top terminal plate
Bottom terminal plate
Main insulation to earth
Post insulator
Interrupting Chamber insulator
ELECTRICAL CONTROL AND AUXILIARY CIRCUITS
Operating magnet
Closing magnet
Auxiliary contact
Counter
Control panel
Limit switch
Micro switch
Thermal relay or heater
Terminal blocks, cables
Driving motor for mechanism
OPERATING MECHANISM UNIT
ESH mechanism
Different Assemblies in ESH Mechanism
Opening coil set up
Closing coil set up
Tripping spring assembly
Electric motor
Auxiliary switch
Indicators
Counter
Opening breaker indicator
Closing breaker indicator
Latch assembly for charging gear
Charging gear assembly
Charging lever group assembly
Shock absorber
Closing lever
Opening box assembly
Opening transmission lever
Closing transmission lever
44
Advertisement
