What is FIR relay in Transformer

@ericsson-QCnbLK • Oct 26, 2024

Oct 26, 2024

1.4K

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

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vasanthmbs

@vasanthmbs-3fG5UO • Jan 15, 2009

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

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aj_onduty

@aj-onduty-BvuwMK • 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

@d-vipul-wP6Syg • Sep 3, 2010

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

Regards,
VIPUL

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Arp

@arp-8yytsY • 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

@freak16-XgiLj6 • Jan 13, 2011

@ARP
Can you please tell what is HIF?

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Arp

@arp-8yytsY • 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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