The paper introduces a type of the turn-to-turn insulation test equipment including an impulse-voltage generator and a peak voltmeter for the electrical machine pole coil.

In this article, we discussed the output capability of the typical impulse voltage generator with a large capacitance load or a small inductance load, and the synchronization capability.

According to the structure of impulse voltage generator, the EMTP simulation software is used to build a 36-stage charging circuit model of impulse voltage generator.