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Insulation testing

High performance insulation testers > 1 kV from the originators



Megger is the originator of the insulation tester with over 100 years of experience and leadership in providing high performance insulation testers for electrical equipment diagnostic applications.

Regular insulation testing is one of the most cost effective methods of identifying aging in any type of electrical equipment. With over 60% of equipment failures being ascribed to insulation breakdown, it is a key area to monitor for early identification of potential failure problems.

Today Megger offers the finest line of 5 kV and 10 kV insulation resistance testers available anywhere. In particular, our line of S1 Series Insulation Testers offers unparalleled capability including battery or line operation, the best measurement ranges, the highest noise resistance, five automatic tests, data storage, RS232 or USB download and MUCH MORE.


The need for reliable monitoring and diagnostic methods drives the world’s leading experts to evaluate new technologies that improve reliability and optimize the use of every grid component.

IDAX 300 Insulation Diagnostic Analyzer is a revolutionary instrument based on dielectric spectroscopy. This analysis technique has been used in laboratories for decades but IDAX is the first instrument designed for field use. The IDAX instrument and measurement principle has been used and verified around the world over the last ten years.