4-_A fault is located somewhere on a 78 m line. Use the Varley loop test circuit as shown in the following figure with R=100 N, R;=100 N. In position 1, R4 at balance was 36.5 N. In position 2, R4 was found to be 20.4 Q. Determine the distance, dx of the fault from the test set.
4-_A fault is located somewhere on a 78 m line. Use the Varley loop test circuit as shown in the following figure with R=100 N, R;=100 N. In position 1, R4 at balance was 36.5 N. In position 2, R4 was found to be 20.4 Q. Determine the distance, dx of the fault from the test set.
Chapter28: Overcurrent Protection–fuses And Circuit Breakers
Section: Chapter Questions
Problem 14R: Arc-fault damage is closely related to the value of _____
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Transcribed Image Text:4- A fault is located somewhere on a 78 m line. Use the Varley loop test circuit as shown
in the following figure with R;=100 N. R;=100 Q. In position 1, R4 at balance was 36.5
2. In position 2, R4 was found to be 20.4 N. Determine the distance, dx of the fault from
the test set.
Da
Ra
R1
Литрer
Wire
Vs
(V)
Rx
Fault to
ground
R3
R4
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