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Phase Failure Relay Test Procedure

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    Phase Failure Relay Test Procedure

    Does anyone have a procedure to test a PFR? The use is for a 480V pump motor, and I can only think of applying voltage to all 3 phases and then drop a phase to see if it works or reverse the rotation. Thanks in advance.

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    undervoltage/loss of phase

    Quote Originally Posted by Fieldtech View Post
    Does anyone have a procedure to test a PFR? The use is for a 480V pump motor, and I can only think of applying voltage to all 3 phases and then drop a phase to see if it works or reverse the rotation. Thanks in advance.
    Isn't it just like a basler BE3-27 ? I think you are correct! just make sure how many legs and what voltage you are supposed to see (Delta or Wye) L-L voltage or L-G.

    The relay also should have contacts for NO and/or NC.

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