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The combined surge voltage and partial discharge tester ST 3820K has been specially developed for integration into automatic test systems and for use in the laboratory. It is ideally suited for detecting winding shorts and insulation faults within a winding, even before the fault affects the electrical specifications of the DUT. By combining a surge voltage generator and partial discharge measurement technology, the ST 3820K provides you with a compact, complete solution for the insulation testing of winding materials.
Due to the extremely steep voltage rising edge and the different, optionally available, surge capacities, the ST 3820K is ideally suited for both conventional winding materials (e.g. wound stators) and winding materials in the field of e-mobility (e.g. hairpin stators).
The partial discharges, excited by the surge tester, can be detected with active measuring technology both by radio and by wire. Radio measurement technology is the first choice for open test objects such as a stator. For closed or shielded DUTs, such as inverters or motors, partial discharges can be measured by inductive measurement via the DUT's connecting cables.
The test procedure for determining the insulation parameters PDIV, RPDIV, RPDEV and PDEV, which is standardised according to IEC 61934, can be carried out in a flash with the ST 3820K.