When testing with an insulation resistance meter, there are eight things to keep in mind. During the test, do not touch the wiring buttons with your hands. The glass on the meter head is dusty and should not be wiped during the shake measurement process.
The measuring equipment is insulated from the ground, and the ground terminal is connected to the shell. Shake to measure large capacitive equipment and break away at rated speed. Test the electrolyzer and connect the ground terminal to the positive pole.
For repeated measurements on the same device, it is best to use the same watch. When the shaking measuring equipment is insulated, record the temperature during measurement. It is not suitable for measuring resistance of hundreds of kiloohms, and it is not suitable for use as a general meter.
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A similar version of this article appeared in the October 2008 issue of Power Electronics Technology magazine.
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