Enhancing circuit breaker reliability through effective mechanism maintenance and lubrication

Effectively lubricating key operating mechanism components enhances circuit breaker performance and improves system reliability. Improper or ineffective operating mechanism maintenance causes circuit breakers to fail to operate when called upon. When this occurs, backup relays, adjacent circuit breakers and associated equipment are initiated to clear system problems. These events can have significant system and financial impact to electric utilities. Circuit breaker mechanisms have several important components that must jointly operate to perform a successful operation. Yet, these components can become problematic when not properly maintained. in many cases, improper circuit breaker operations are caused by faulty cleaning practices or inadequate re-lubrication. Systematic maintenance lubrication initiatives to address problematic components such as pins, rollers and bearings are recommended. Moreover, a proactive initiative approach will solidify component integrity and enhance electrical grid reliability.