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Directional earth fault protection ( 67N)

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redlinej

redlinej

Electrical
Joined
Mar 13, 2012
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105
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Hey Guys,
I am taking a deep dive into directional earth fault protection. I would like to know;if the relay is using Uo on the horizontal plane for polarizing the relay, does this means the internal calculation to determine the trip angle is a power calculation either reactive or active.
 
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Vamp 210 now Schneider.
 
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