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  • What is FIR relay in Transformer

    ericsson

    Member

    Updated: Oct 26, 2024
    Views: 1.1K
    I have faced this question in an interview, what is the use of FIR relay in transformer....?

    if anybody knows please explain me..
    thanks
    regards
    ericsson
    0
    Replies
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Replies

  • vasanthmbs

    Member • Jan 15, 2009

    FIR relay is induction relay..... same as other relays..
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  • aj_onduty

    Member • Aug 29, 2010

    I am getting curious about this. How does it protect the transformer? what is its full form? What is its basic principle?How is its working?
    I am not expecting a full explanation about it, but I just want a basic knowledge about it. At-least give me the full form of it.
    I would be happy if anyone answers this.
    Thank you for trying to answer me(in advance).
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  • d_vipul

    Member • Sep 3, 2010

    [​IMG]

    CHECK OUT THIS DIAGRAM FOR MORE DETAILS..................

    Regards,
    VIPUL
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  • Arp

    Member • Jan 13, 2011

    FIR (Finite Impulse Response) filter banks recognize the distortion of the voltage and current waveforms caused by the arcs usually associated with HIF, by yielding 3 phase voltage and current at a set frequency and inspecting the pattern displayed against a pre set pattern, usually based on an algorithm.
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  • freak16

    Member • Jan 13, 2011

    @ARP
    Can you please tell what is HIF?
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  • Arp

    Member • Jan 13, 2011

    High impedance faults (HIF) are faults which are difficult to detect using standard overcurrent protection relays for earth and phase fault detection.
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