Which of the following are the impedance relay properties of the impedance relay?
A. Impedance relay is suitable for preventing short-circuit between the phase of medium-length transmission lines.
B. When the Power Swing occurs in the electrical system Impedance relays still function correctly without impact.
C. If there is an arc short circuit, the impedance relay will fail.
D. If you want the relay impedance to work in the direction Must be used in conjunction with a directional relay
Show Answer
Answer: B
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