IEEE Std 43-2000: IEEE Insulation to Ground Test Standard

In effect, the IEEE 43-2000 is meant to provide information on insulation to ground (ie: Megger) testing and polarization index testing. It does not contain information on dielectric absorption testing, high potential testing, etc.

A few of the items that the standard states that are often missed:

1. You must test all the leads together and to ground. In an assembled system you can short all of the leads together with jumpers, if necessary;
2. You must short the leads to ground for 4 times the amount of time that the voltage is applied. This should be at least 4 minutes for a standard insulation test and up to 40 minutes after a polarization index;
3. Measurements must be adjusted for temperature.

The standard is undergoing additional changes based upon advances in electrical insulation systems.

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