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  1. VECcoop2015

    Testing SEL 651R relays

    I have a question for the relay techs out there. We are using a lot of SEL 651R relays for single phase tripping due to our remote territory and miles of single phase lines. Presently out Relay techs use a MANTA MTS 5000 to test the overcurrent and under frequency elements that we use for...

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