Answer no. 5 4. A CT with an excitation curve given in thefigure has a rated current ratio of 500:5 A and asecondary leakage impedance of 0.1 +j0.5ohms. Calculate the CT secondary outputcurrent and the CT error for the following cases:a.) The impedance of the terminating device is4.9 +j 0.5 ohms and the primary CT loadcurrent is 400 A. b.) The impedance of theterminating device is 4.9 +j0.5 ohms and theprimary CT load current is 1200A c.) Theimpedance of the terminating device is 14.9 + j1.5 ohms and the primary CT fault current is400 A. d.) The impedance of the terminatingdevice is 14.9 + j 1.5 ohms and the primary CTfault current is 1200 Aw 1008060402024 6810Secondary exciting amps-,5. The CT of problem 4 is utilized in conjunctionwith a current sensitive device that will operateat curent levels of 8 A or above .Check whetherthe device will detect the 1200 A fault currentfor cases b.) and d.) in problem 4.Secondary exciting volts-E'

5. It is given that: CT fault current=I=1200 ASecondary leakage impedance=0.1+j0.5 ΩImpedance of the…

5. The CT of problem 4 is utilized in conjunction with a current sensitive device that will operate at curent levels of 8 A or above .Check whether the device will detect the 1200 A fault current for cases b.) and d.) in problem 4.

5. The CT of problem 4 is utilized in conjunction with a current sensitive device that will operate at curent levels of 8 A or above .Check whether the device will detect the 1200 A fault current for cases b.) and d.) in problem 4.

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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Concept explainers

Analog to Digital Converters

The analog-to-digital converter (ADC) allows circuits controlled by microprocessors, Arduinos, Raspberry Pi, and various reasonable digital circuits to be connected to the real world. In the real world, analog signals have a continuous stream of information from a variety of sources and sensors capable of measuring sound, light, temperature, or movement, in addition to the many digital systems that interact with their environment by measuring analog signals from those transducers.

Question

Answer no. 5

4. A CT with an excitation curve given in the
figure has a rated current ratio of 500:5 A and a
secondary leakage impedance of 0.1 +j0.5
ohms. Calculate the CT secondary output
current and the CT error for the following cases:
a.) The impedance of the terminating device is
4.9 +j 0.5 ohms and the primary CT load
current is 400 A. b.) The impedance of the
terminating device is 4.9 +j0.5 ohms and the
primary CT load current is 1200A c.) The
impedance of the terminating device is 14.9 + j
1.5 ohms and the primary CT fault current is
400 A. d.) The impedance of the terminating
device is 14.9 + j 1.5 ohms and the primary CT
fault current is 1200 A
w 100
80
60
40
20
2
4 6
8
10
Secondary exciting amps-,
5. The CT of problem 4 is utilized in conjunction
with a current sensitive device that will operate
at curent levels of 8 A or above .Check whether
the device will detect the 1200 A fault current
for cases b.) and d.) in problem 4.
Secondary exciting volts-E'

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