The Associated Research 4030B is a basic unit designed to be used by a skilled technician, experienced in high voltage withstand testing. The 4030B tests from 0 - 4000 VAC. The tester has a two range kilovoltmeter and three range microammeter, 0-50/500/5000 microamps. A collapsing transformer automatically lowers the output voltage as current is limited to approximately 15 mA.
Th output is continuously adjustable from zero to maximum voltage setting. Current flow metered to 5mA, limited to 15mA.