Commissioning and maintenance test for protection relays
Commissioning and maintenance test for protection relays
(OP)
For several years again we will have substations equipped with numerical, static and electromechanical relays, from different manufacturers.
Apart for the fact that people get crazy, what are your guidelines for such type of testing? Do you differentiate the methods and the time interval for the different relay technologies? Do you follow the guidelines from the vendors or the directives of your company?
Open discussion
Apart for the fact that people get crazy, what are your guidelines for such type of testing? Do you differentiate the methods and the time interval for the different relay technologies? Do you follow the guidelines from the vendors or the directives of your company?
Open discussion






RE: Commissioning and maintenance test for protection relays
With e-m relays, the relay characteristics can change with time so timing test, cleaning, and possibly re-calibration may be necessary.
RE: Commissioning and maintenance test for protection relays
If it is an industrial environment that can be different. I know some plant environments that are very dusty (talc, calcium carbonate plants) that EM relays should be tested every 6 months to a year.