- Megohmmeter
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Megohmmeter is a special type of ohmmeter used to measure, or rather test, the insulation resistance of insulators. Insulators have electrical resistance in the range of millions of ohms compared to conductors which are measured in ohms. Insulators need testing for their insulation strength at the time of commissioning and as part of maintenance for electrical equipments and installations. For this purpose special ohmmeters called megohmmeters which can provide high voltages (typically in ranges from 500V to 2 kV) at specified current capacity are used. The minimum insulation tolerated are in the range of 1 to 10 mega-ohms, depending on the standards referred to.
Categories:- Measuring instruments
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