This tester is used for evaluating the dielectric strength (volt endurance / volt destruction) of solid electric insulated material. By exchanging the electrodes, the tester can also be used for board, sheet, textile, film, tape, tube, varnish, and paint. Recent applications also include insulating film in lithium-ion batteries. After setting the specimen between the two electrodes, voltage is applied mid-air or in-bath until the specimen insulation destructs. The results are evaluated either by the insulation strength or destruction voltage level. The tester is capable of testing both
short-time tests and step-by-step tests. The tester can also be used for enamel coatings using the twistpair method by exchanging the electrodes.