Should we remove the long-time rating plug of all Micrologic version (A, E, P, H) in Masterpact NT/NW or Compact NS breakers before performing di-electric (megger) test?


03 February 2022

Yes. When performing dielectric test, you must remove Long Time rating plug for all Micrologic types, including Micrologic E.

A sticker is now available on the front face of the Micrologic to warn.

Please check the steps on how to remove the rating plug in relevant Micrologic user guide or circuit breaker user guide. Please see below steps from Micrologic P user guide to remove the rating plug.