In electrical installation resistance matters as much as conductivity. Since this is the case measuring the amount of resistance an insulator provides is necessary to keep everything running smoothly. This is where a Megger resistance test is performed by a Megger device which is also known as a resistance measuring device. A Megger resistance test essentially works by sending out a high DC voltage to the insulator to measure the level of resistance it can provide.
In order to perform this test, a Megger device must be hooked up to the installation or machine winding which is why Megger devices are portable. Also, different installations are used in different appliances and settings as those for your household and industrial plants are not the same. This is why there are different types of Megger resistance tests.
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