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Technical guides


Access a range of technical guides, providing insight into how to use your Megger instrument for specific applications and uses.

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Technical guide downloads


Subjects (10)

A Stitch in time

A complete guide to electrical insulation testing

Guide to clamp-on ground testing

This booklet focuses on the clamp-on method of ground testing and is designed to give the reader a better understanding of the test method and where it can and cannot be used.

Electrical review: transformer insulation assessment

In this video, Matz Ohlen from Megger Sweden discusses best practices for using dielectric frequency response analysis when assessing the condition of a transformer. 

A guide to low resistance testing

This guide covers the processes for low resistance testing, as well the optimal equipment to use, safety concerns and how to interpret results.

Guide to insulation testing above 1k

This guide discusses the causes of insulation degradation on >1kV power cables, and the process of measuring degradation before a fault can develop. The guide also recommends the best equipment to use with reference to IEEE standards. 

Battery Testing Guide

Learn more about different kinds of batteries and the maintenance philosophies behind them. This guides also contains practical battery testing methods and test equipment recommendations. 

Cable TV premise wire testing

Discover ins and outs of telephony wiring testing including premise wire trouble conditions, analogue line impairment testing and fault location. Make sure you are testing with the right equipment with the included product guide

Circuit breaker testing guide

This guide covers the role and function of circuit breakers in a power network, the as well as the main types of breaker and prevailing CB technologies. Learn more about failure modes, maintenance strategies and testing methods.

Getting Down To Earth - A practical guide to earth resistance testing

Earth testing and resistivity measuring requires sensitive equipment and sophisticated calculations. This guide makes these processes easier to understand for both large and small ground systems, with detailed studies of various relevant testing methods.

The Megger guide to insulating oil dielectric breakdown testing

Gain insight into the different types of oil testing methods including oil dielectric breakdown testing moisture content testing. This guide covers best practices for oil testing, the correct equipment to use, and the different IEEE / IEC standards to adhere to when testing.