Q2. In the figure below, obtain the values of x and r such that Va is zero for the (positive sequence and zero sequence) and has a value for the negative sequence (with a phasor diagram). a-Find the relationship between Va and Current Negative Sequence b-With the help of overvoltage relay we intend to protect the network from Negative sequence. Where is this Relay located? c-lf R=33.5 ohms and the maximum negative sequence current is 5% of the secondary rated value of CT2. How many volt should the overvoltage relay pickup be? 500/5 A B ell Va Basic Negative Phase Sequence Current Filter
Q2. In the figure below, obtain the values of x and r such that Va is zero for the (positive sequence and zero sequence) and has a value for the negative sequence (with a phasor diagram). a-Find the relationship between Va and Current Negative Sequence b-With the help of overvoltage relay we intend to protect the network from Negative sequence. Where is this Relay located? c-lf R=33.5 ohms and the maximum negative sequence current is 5% of the secondary rated value of CT2. How many volt should the overvoltage relay pickup be? 500/5 A B ell Va Basic Negative Phase Sequence Current Filter
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter24: Magnetic Fields
Section: Chapter Questions
Problem 75A
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