A 500-MVA 20-kV, 60-Hz synchronous generator with reactances X, = 0.15, X: 0.24; X 1.1 per unit and time constants T, = 0.035, T = 2.0, T= 0.20 s is connected to a circuit breaker. The generator is operating at 5% above rated %3D voltage and at no-load when a bolted three- phase short circuit occurs on the load side of the breaker. The breaker interrupts the fault 3 cycles after fault inception. On abase of 500MVA, 20KV. The subtransient fault current in kA rms is: Answer: I"= 101.0 kA

A 500-MVA 20-kV, 60-Hz synchronous generator with reactances X, = 0.15, X: 0.24; X 1.1 per unit and time constants T, = 0.035, T = 2.0, T= 0.20 s is connected to a circuit breaker. The generator is operating at 5% above rated %3D voltage and at no-load when a bolted three- phase short circuit occurs on the load side of the breaker. The breaker interrupts the fault 3 cycles after fault inception. On abase of 500MVA, 20KV. The subtransient fault current in kA rms is: Answer: I"= 101.0 kA

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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