Using the current tap settings and time dial settings that you have selected in Problem 10.12, evaluate

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Using the current tap settings and time dial settings that you have selected in Problem 10.12, evaluate relay coordination for the minimum fault currents. Are the fault-to-pickup current ratios \(\geqslant 2.0\), and are the coordination time delays \(\geqslant 0.3\) seconds in all cases?

Problem 10.12

Repeat Example 10.4 for the following system data. Coordinate the relays for the maximum fault currents.

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Example 10.4

Data for the \(60-\mathrm{Hz}\) radial system of Figure 10.16 are given in Tables 10.3, 10.4, and 10.5. Select current tap settings (TSs) and time-dial settings (TDSs)

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Power System Analysis And Design

ISBN: 9781305632134

6th Edition

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

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