(a) As an Engineer you have been contracted by a power distribution company to investigate the causes of frequent transformer failures in its network. In the course of your investigation you came across the following: The Transformer installed in urban area failed within the warrant period of 3 years; the diagnostic results showed failure of one phase of the High Voltage (HV), It was further observed that this failure was causes by Overheating and overloading of that phase which caused burning of both HV and Low Voltage (LV). Explain what could be the cause(s) of this overload and the implications it could have on other equipment in the Transformer

(a) As an Engineer you have been contracted by a power distribution company to investigate the causes of frequent transformer failures in its network. In the course of your investigation you came across the following: The Transformer installed in urban area failed within the warrant period of 3 years; the diagnostic results showed failure of one phase of the High Voltage (HV), It was further observed that this failure was causes by Overheating and overloading of that phase which caused burning of both HV and Low Voltage (LV). Explain what could be the cause(s) of this overload and the implications it could have on other equipment in the Transformer

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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A 10 kVA, single-phase transformer has a turns ratio of 12:1 and is supplied from a 2.4 kV supply. Neglecting losses, determine (a) the full load secondary current, (b) the minimum value of load resistance which can be connected across the secondary winding without the kVA rating being exceeded, and (c) the primary current.
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It is bartleybe's policy that if questions objective than you need to solve at least first 3 questions.
32 A 10 kVA, single-phase transformer has a turns ratio of 12:1 and is supplied from a 2.4 kV supply. Neglecting losses, determine (a) the full load secondary current, (b) the minimum value of load resistance which can be connected across the secondary winding without the kVA rating being exceeded, and (c) the primary current.
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