Testing Prevents Surge in Arrester Failures: For more than 30 years, Manitoba Hydro has been testing surge arresters on delivery at installation and during operation

摘要

SURGE ARRESTERS ARE OFTEN OVERLOOKED WHEN PERFORMING POWER FACTOR TESTS on transformers, breakers and other apparatus in a substation. Oftentimes, the testers are aware of how a transformer or a breaker functions but unaware of the intended purpose of the surge arresters. Because there are no moving parts to maintain or an oil sample to pull, it is often policy not to perform any arrester testing.