Front Terminals
1 - RTN/Low: This terminal connects to the RTN/LOW terminal on the high voltage module of the 19501 partial discharge tester, which is a low potential terminal. This terminal is almost equal to the ground terminal on the chassis.
2 - Low Contact: This terminal connects to the HVCC-RTN terminal on the high voltage module of the 19501 partial discharge tester.
3 - HV Contact: This terminal connect to the HVCC-HV terminal on the high voltage module of the 19501 partial discharge tester.
4 - HV: This terminal connects to the HV terminal on the high voltage module of the 19501 partial discharge tester. Do not touch during testing and when the DANGER light is on.
5 - Micro Switch: This switch connects to the Interlock terminal on the fixture's rear side. When the acrylic cover is closed, the Interlock terminal will be short-circuited.