CIRCUIT BREAKER TESTING

TEST	EQUIPMENTS USED
1.    Insulation Resistance Measurement	a.    5KV Insulation Tester (Make: Megger)        b.    3 Pole timer <Egil> (Make: Megger)        c.    Multimeter (Fluke)        d.    CPC 100 (Make: Omicron)
2.    Coil Resistance Measurement        (Trip and Close)
3.    Closing and Tripping coil pick up
4.    Breaker Timer Test        Close: <60ms        Open: <50ms
5.    Contact Resistance Measurement        Per joint: <20µ ohm
6.    Electrical & Mechanical Operational      check

*Electrical & Mechanical Operational Check Includes

·         Name Plate Details

·         Rack in/out check

·         Spring charge mechanism (Electrical & Mechanical)

·         Current drawn by spring charge motor & Spring charge time

·         Anti-pumping check, Open / Close indication check

·         Auxiliary contact checks & Counter Operation Checks

·         Tripping and Closing operation