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Insulation Measurement and Supervision in Live AC and DC Unearthed Systems

  • Book
  • © 2013

Overview

  • Provides insight into important issues concerning AC and DC IT systems incl. a basic theory of operation caused by ground insulation deterioration
  • Presents practical methods of insulation resistance and capacitance measurement in live networks with derivation of formulas
  • Presents commonly used monitoring devices and systems and an explanation of their settings selection

Part of the book series: Lecture Notes in Electrical Engineering (LNEE, volume 167)

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Table of contents (13 chapters)

  1. AC IT SYSTEMS

  2. DC IT SYSTEMS

  3. AC AND DC IT SYSTEMS

Keywords

About this book

Low voltage unearthed (IT) AC and DC systems are commonly applied for supply of power and control circuits in industry, transportation, medical objects etc. The main reasons for their use are high reliability and numerous advantages offered by isolating them against ground. Insulation level is a decisive factor for networks operational reliability and safety. Insufficient insulation-to-ground resistance can cause various disturbances. Though ground faults in IT systems do not make networks operation impossible, they may cause severe problems with their safe functioning.

In this book the most important issues concerning normal operation and ground fault phenomena are described in concise form. Numerous methods of insulation resistance and capacitance measurement in live circuits are presented. Important other procedures of  these parameters determination based on measurement and calculation are explained and reviews of selected insulation resistance measurement devices as well as earth fault locating systems are included. For the text understanding merely basic knowledge of electrical circuits theory is required. This book is addressed to electrical engineers, technicians and students of this specialty and may also serve as an academic handbook.

Authors and Affiliations

  • Elpoautomatyka Polaniec, Staszow, Poland

    Piotr Olszowiec

About the author

 

Piotr Olszowiec (M.Sc. electrical engineer, Poland), graduated from Academy of Mining and Metallurgy (Cracow), has worked over 30 years at Polaniec Power Plant (Poland). He is an owner of two patents relating to insulation resistance measurement in DC circuits. He is also an author of few papers on electrical protections and measurements and numerous articles on power engineering published in Polish technical periodicals. In 2011 COSiW (Poland) published his first book “Insulation Monitoring in DC Networks” (in Polish) based on gained professional experience. The manual “Insulation Measurement and Supervision in Live AC and DC Unearthed Systems” contains an updated overview of theoretical and practical knowledge about insulation monitoring issues.

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