The insulation resistance test a k a the megger test is as relevant as ever and in many applications is preferred to other insulation test methods.
Cable insulation tester.
An insulation resistance tester is a test instrument that measures current that leaks through the insulation into ground.
A cable insulation resistance test is a test that is performed by applying 500 v or more between the conductor and ground and measuring the resulting leakage current.
The megger insulation tester is essentially a high range resistance meter.
The insulation condition from values that are only relative.
Because electrical insulation will exhibit dynamic behavior during the course of your test.
The megger insulation tester is a small portable instrument that gives you a direct reading of insulation resistance in ohms or megohms.
With advanced performance the insulation tester line is designed to be safe simple to use and gimmick free.
For good insulation the resistance usually reads in the megohm range.
Whether you work on motors generators cables or switch gear the fluke digital insulation resistance testers provide noise free reliable results.
We look for corrosion on the copper cracks in the insulation moisture on the cables and many other indicators of damage to the cables.