Air Circuit Breaker (ACB)

Our standard ACB service includes:

Arc chute inspection and clean
Auxiliary contact inspection, clean and tighten (if fitted)
Cluster inspection, clean and tighten (if fitted)
Contact resistance test
Contact temperature test
Contact inspection, clean and tighten
Contact adjustment (if required)
Current transformer functionality test (if fitted)
Earth contact inspection, clean and tighten
Electrical wiring inspection and connection check
Functionality test of charging motor, close, trip and undervoltage coils (if fitted)
General clean
Insulation inspection and clean
Insulation resistance test
Lubrication of mechanism, linkages and springs
Manual operational test
Mechanical inspection, clean and tighten
Mechanical interlock inspection, tighten and test (if fitted)
Protection relay test including trip time test (if fitted)
Secondary contact inspection, clean and tighten (if fitted)
Shutter inspection, clean, tighten and test (if fitted)
Test report with recommendations

Our experienced technicians service and test various makes of ACB including:

Services