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Anonymous Poster

Distance Relay Test

08/09/2010 8:54 AM

how to do the distance relay test & need for distance relay test procedure?

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Engineering Fields - Electrical Engineering - Been there, done that, still doing it. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
Posts: 9298
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#1

Re: relay

08/09/2010 9:12 AM

Well it all depends on which distance relay test one is doing. Some people like to stand on a step ladder and look in the distance to see if the relay's indicator light turns ON. Some coaches prefer to time how long each runner takes for each segment of the relay race.

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Join Date: May 2010
Location: Liverpool, NY
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#2

Re: Distance Relay Test

08/11/2010 4:03 PM

If you need to test a fault distance relay, you have to understand line impedance, zones of protection, and fault characteristics first. The relay is usually set to pick up based on an impedance value (fault current & voltage at some specific angle to each other) that you need to calculate.

Once you know the fault values that the relay is expecting to see, then you need the test equipment to be able to inject the appropriate I & V, and time the relay's response.

Sounds like you need a qualified electrical testing company to help you. Check at:

www.netaworld.org

for someone in your area.

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