Phase Directional Overcurrent Relay with 90-degree connection – MTA is 45 degrees at phase A.
The relay will signal trip, when the phase A phase Tripping zone has an angle
A. From 45 degrees leading to 90 degrees Lagging
B. From 45 degrees Leading to 135 degrees Lagging
C. From 45 degrees Lagging to 135 degrees Leading
D. From 0 degrees to 180 degrees Lagging
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Answer: B
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Answer: C
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