Air Circuit Breakers Servicing
Air Circuit Breakers
Cleaning of breaker with CRC-226
Removal of old grease and re-greasing the same with recommended grease.
Check condition of arcing contact and gap between fixed and moving arcing contacts shall be checked.
Checking the reset mechanism, tripping of breaker through push button
Checking tripping of ACB through protection release
Tripping of ACB manually through volt metric release.
Checking and adjust freeness of DN and volt metric release trip rod
Checking presence and proper tightening of hardware.
Checking presence of all circlips
Checking condition and alignment of jaw contact with cradle terminals
Checking condition of ACB wiring and replace if required
Checking and adjusting gap between hylam sheet and side plate
Checking proper closing of all poles together
Checking working of anti pumping device in case of EDO ACB
Checking alignment of SIC and it’s operation
Checking scrapping earth alignment
Checking condition of arc chutes
Checking U/V release pick up and drop off
Checking ACB tripping through shunt release
Checking motor operation in case of EDO ACB
Checking closing coil operation in case of EDO ACB
Checking continuity and proper changeover of aux contact block
Checking of release by secondary injection for O/L, S/C, E/F
Setting of release as per the load
Checking the healthiness of CTs
The spare parts, accessories would have to be provided by the customer.
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Nangloi Delhi -110041