【Daily Question】Question from Issue 20150923
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Participation reward: 2 Wealth. Reward for correct answer: 9 wealth. Directional impedance relays utilize memory technology, and what they remember is ( ). A. The phase of the current before a fault occurs B. The phase of the voltage before a fault occurs C. The direction of power before a fault occurs 【Production and Management Division】Seeking moderators and technical discussants to join
Directional impedance relays utilize memory technology, and what they remember is (B): A. the phase of the current before the fault; B. the phase of the voltage before the fault; C. the direction of power before the fault
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The correct answer is the second one, b
The impedance relays oriented in direction A utilize memory technology, and what they remember is ( ). A. The phase of the current before the fault B. The phase of the voltage before the fault C. The direction of power before the fault
Directional impedance relays use memory technology, and what they remember is (B)
Anti-relays utilize memory technology, and what they remember is (B)
Directional impedance relays utilize memory technology, and what they remember is (B): A. the phase of the current before the fault; B. the phase of the voltage before the fault; C. the direction of power before the fault
Directional impedance relays utilize memory technology, and what they remember is (B): A. the phase of the current before the fault; B. the phase of the voltage before the fault; C. the direction of power before the fault
Directional impedance relays utilize memory technology, and what they remember is (B, the phase of the voltage before the fault)
Directional impedance relays utilize memory technology, and what they remember is (B): A. the phase of the current before the fault; B. the phase of the voltage before the fault; C. the direction of power before the fault