What is the typical response time for MOVS?

MOV (Metal Oxide Varistor) is defined as a nonlinear and voltage dependent device that suppress the…

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Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter25: Surge, Spike, And Lightning Protection

Section: Chapter Questions

Problem 7RQ

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QUESTION 1 The unit step response of a second-order open-loop LTI system is shown below Calculate approximate percentage maximum overshoot? Calculate approximate rise time value? (FYI: The rise time is defined as the time system takes from 10% to 90% of the final value) Calculate approximate settling time value? (FYI: The settling time is defined as the time at which the system reaches to steady-state value and remains within the tolerance of plus or minus 2%)
a) Name 3 examples or types of Transient Faults on Transmission Lines? b) What is the reach of each of the Zones in a Distance Protection Scheme? c) Name 3 types of Protection Schemes? d) What are 3 types of Distance Relays? e) What is the ANSI Standard Device Number for an Instantaneous Overcurrent Relay and the Device Number for a Time Overcurrent Relay which operates on a time delay?

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