How does one determine the coordinating time between a protective device and a downstream device? Explain how this is implemented in a protection scheme if inverse time overcurrent elements are used? How might you implement it if you are only using instantaneous overcurrent elements?

How does one determine the coordinating time between a protective device and a downstream device? Explain how this is implemented in a protection scheme if inverse time overcurrent elements are used? How might you implement it if you are only using instantaneous overcurrent elements?

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.21MCQ

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Concept explainers

Operational Amplifier

An operational amplifier also called op amp is an integrated circuit or analog circuit that takes input as a differential voltage and produces output as a single-ended voltage. It is an IC that can amplify weak electric signals.An op amp has one output pin and two input pins. The basic role of an opamp is to amplify the voltage difference between the two input voltages. It is also used in filtering or to perform mathematical operations or in signal conditioning.

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How does one determine the coordinating time between a protective device and a
downstream device? Explain how this is implemented in a protection scheme if inverse
time overcurrent elements are used? How might you implement it if you are only using
instantaneous overcurrent elements?

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