The Chroma 19501-K Partial Discharge Tester is an instrument equipped with AC hipot test and partial discharge detection functions, providing 0.1kV~10kV of AC output, 0.01μA~300μA of leakage current, and 1pC~2000pC partial discharge detection range for measurement. It is specifically designed for testing high voltage semiconductor components and high insulation materials.
The product design of Chroma 19501-K Partial Discharge Tester is compliant to the IEC60270-1 standard in particular the partial discharge testing requirements for high voltage. It adopts narrowband measuring technology to perform the PD tests, and displays the measured results on the screen with intuitive values (pC) allowing users to clearly understand the DUT (device under test) test result.
In addition to IEC60270-1, the PD tester is also IEC60747-5-5 and VDE0884 compliant. Its embedded IEC60747-5-5 measuring methods can meet the production test requirements of optocouplers, providing a user-friendly operating interface.
When performing high voltage tests on the production line, if the DUT is poorly connected to the test cable, it could result in test failure or skipping. Thus, it is important to make sure the DUT and test cables are well connected. Chroma's unique high voltage contact check (HVCC) uses Kelvin measurement to perform contact tests on the high insulation components with high voltage outputs, concurrently improving the test effectiveness and productivity.
When a solid insulator has air gaps or impurities mixed in the insulating layer, the high electric field strength centered on the air gaps will cause partial discharge under the rated high voltage. The continuous partial discharge will deteriorate the surrounding insulation material, affecting the long term reliability of electrical products and causing safety concerns.
Long-term damage from partial discharge to safety components used in power systems, such as optocouplers, causes the insulation of these components to fail leading to potential hazards. However, the IEC60747-5-5 standard regulates that partial discharge test in the production process (routine test) must be 100% performed, and less than 5pC discharge capacity under the maximum insulation voltage to ensure that partial discharge does not occur during the normal working environment.
The partial discharge tester provides hipot test and partial discharge detection for high insulation withstand components such as high voltage optocouplers, high voltage relays, and high voltage switches to assure quality and reliability.