High potential test stand

The test stand is used for insulation measurement and dielectric strength testing of switch modules (hereinafter referred to as “test specimen”). For this purpose, the test stand has been equipped with a controllable high-voltage source (hereinafter referred to as “HV device”) and a double test chamber in which 6 test specimens can be tested reciprocally at the same time.

After the start of the test, the test specimens are first tested together in accordance with the test parameters defined after the specified tests (1st first insulation measurement, 2nd dielectric strength test and 3rd second insulation measurement). If an error occurs during the test (insulation resistance too low or current too high), each of the 6 test specimens is subjected to a short individual test in order to identify the source of the error. During the test, the control and the HV device constantly communicate and the actual values of voltage, current, resistance and test time are constantly displayed. The result of the test is presented on the screen as a plain text message. At the same time, for each test specimen “OK” or “not OK” is displayed visually.

The test parameters input is realised in a customer-specific manner from permanently programmed values via manually changeable ones up to the type-specific test database. The test results are also evaluated customer-specifically, from simple signalling of the test result via signing to a database of the test results with automatic certificate generation.