Air Circuit Breaker Repairing Service

An Air Circuit Breaker (ACB) is a crucial component in electrical systems, designed to protect circuits from overloads and short circuits. Regular service of ACBs involves inspecting and testing the device to ensure reliable operation. This includes checking the mechanical and electrical components, cleaning contacts, calibrating settings, and verifying trip functions. Routine maintenance helps prevent unexpected failures, prolongs the life of the breaker, and ensures the safety and efficiency of the electrical system. Regular service is essential for maintaining optimal performance and compliance with safety standards.

• Cleaning of breaker with CRC.
• 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 presence and proper tightening of hardware.
• 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 its operation.
• Checking scrapping earth alignment.
• Checking condition of arc chutes.
• 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 contact CRM.
• Checking closing opening time test.