Insulation Resistance Test
Insulation resistance test is a conventional means of insulation testing and inspection of electrical equipment, but also the high voltage insulation test of the preliminary test. And the pressure test is similar, it is up to 1000V DC voltage is applied to two points need to be tested. Insulation resistance test results usually megohm resistance value units, rather than the pressure test to Pass / Fail to represent test results. Usually typical insulation resistance test voltage of 500V DC, while the value of the insulation resistance shall not be below a few ohms.
Some of the new design will be largely Safety Analyzer insulation resistance testing functions, including covering substantially insulation resistance test function must provide a voltage of 500 to 1000VDC, while the resistance measurement range can also be measured by the amount of several hundred KW several GW. These features allow the product manufacturers comply with safety requirements, TUV and VDE, such as implementation units in certain products will require do insulation resistance test before performing the pressure test, this provision is currently most cited safety tests on the product design execution.
The basic theory and pressure testing the insulation resistance test is very similar to the pressure test is based on the determination of leakage current as a reference, and form the insulation resistance test places the resistance value as determined in accordance with generally must be much more than MΩ.
The higher the insulation resistance value represents better the insulation product. Wiring insulation resistance test and the pressure test is identical to the measured value of insulation resistance and the equivalent resistance of the periphery are connected together by a connected web is formed between two measurements.
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