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For the system shown below (bus protection by differential current relay) ii an external fault has occurred on feeder # 3, find the operating coil current, L Would the relay operate or not? 4- Yes No iii. If the feeder # no.3 supplies 7000 A current infeed to the bus and an internal fault occurs on the bus itself, find the operating coil current, L Would the relay operate or not? Yes No .... ... . 1 1, 6000 10000 ... . I, R 6000 10000 7000 600:5 G:009 Op. Coil Op. Coil

For the system shown below (bus protection by differential current relay) ii an external fault has occurred on feeder # 3, find the operating coil current, L Would the relay operate or not? 4- Yes No iii. If the feeder # no.3 supplies 7000 A current infeed to the bus and an internal fault occurs on the bus itself, find the operating coil current, L Would the relay operate or not? Yes No .... ... . 1 1, 6000 10000 ... . I, R 6000 10000 7000 600:5 G:009 Op. Coil Op. Coil

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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For the system shown below (bus protection by differential current relay) ii an external fault has occurred on feeder # 3, find the operating coil current, I Would the relay operate or not? Yes No iii, If the feeder # no.3 supplies 7000 A current infeed to the bus and an internal fault occurs on the bus itself, find | the operating coil current, L Would the relay operate or not? 4= A b. Yes No 1, R 6000 10000 AI, R 6000 10000 7000 G:009 G:009 Op. Coil Op. Coil
Transcribed Image Text:For the system shown below (bus protection by differential current relay) ii an external fault has occurred on feeder # 3, find the operating coil current, I Would the relay operate or not? Yes No iii, If the feeder # no.3 supplies 7000 A current infeed to the bus and an internal fault occurs on the bus itself, find | the operating coil current, L Would the relay operate or not? 4= A b. Yes No 1, R 6000 10000 AI, R 6000 10000 7000 G:009 G:009 Op. Coil Op. Coil
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