Air Circuit Breaker Maintenance Checklist

Recommended minimum practice for preventive maintenance.

Air circuit breaker maintenance checklist.

Maintenance of a circuit breaker is more complicated than replacing a filter or changing oil like other industrial machines. Extraordinary maintenance on the circuit breaker carried out only by highly qualified abb personnel to extend the life of the circuit breaker and increase its reliability and original efficiency. In1990 he joined the worldwide circuit breaker manufacturer gec alsthom as a specialized field engineer. Though a circuit breaker may not show any apparent need for maintenance on the outside it is a critical part of its performance and longevity.

Reduces risk of equipment breakdown which may result in large monetary losses due to production downtime or productivity loss. Lvpcbs photo 1 at right are also known as air frame and draw out circuit breakers. Clean all insulating materials with vacuum and or clean lint free rags. It operates in air where air blast as an arc quenching medium at atmospheric pressure to protect the connected electric circuits.

Standard for an electrical preventive maintenance epm program 3 2 air circuit breakers 3 2 1 insulation remove and clean inter phase barriers. Benefits on maintenance of acb. Shared all the functions of circuit breaker and its rated charachteristics this blog has cleared all the concept of air circuit breaker l t electrical automation has some registered product you may visit l t electrical. For air blast circuit breaker there are some special cares to be taken in addition to general instruction for maintenance of operating mechanism.

Frequency of circuit breaker maintenance. Secondary disconnects connect the circuit breaker to the control circuits. In 2001 he became manager of air blast circuit breaker division for areva. Inspect for signs of corona.

Prevents accidents arising from lack of maintenance. For circuit breakers older than 3 years the first intervention is extraordinary maintenance. Air circuit breaker acb air circuit breaker acb is an electrical protection device used for short circuit and overcurrent protection up to 15kv with amperes rating of 800a to 10ka. Actually for operating mechanisms and for other some features the maintenance processes and schedules are same for all oil circuit breaker air circuit breaker sf 6 circuit breaker and vacuum circuit breaker.

Ensures that the acb always perform at optimum level. If it is necessary to use cleaning solvents use only solvents recommended by the manufacturer. Air circuit breakers are designed to protect electrical circuits and equipment from damage due to overload or short circuits. There are five major assemblies on a typical lvpcb.

Main disconnects connect the circuit breaker to the main bus. Air circuit breaker maintenance services.