HVA200 PD Tan Delta Instrument

Partial Discharge Tan Delta

As in any diagnostic field, be it medical or engineering, providing a true and accurate diagnosis of the health of a person or device, often requires the combination of more than one diagnostic test. It is very seldom that simply one diagnostic is sufficient to provide enough information to make a complete and accurate assessment.

With electrical apparatus such as cables, performing a couple of tests is always better than simply pinning your hopes on just one. The PD/TD series of test instruments provide a combo package of Partial Discharge and Tan Delta in one integrated system allowing the testing engineer to perform a multitude of diagnostic tests, thereby gaining a better understanding as to the condition of that device.

For example, there are many case studies from the field, where a cable has had no PD present, had good TD results, but then went on to fail the 30 minute withstand (hipot) test. In other cases, a cable that passed the withstand test, had no PD present and failed the TD diagnostic test – moisture in a splice was one example. In other cases, we have had cables that passed both the TD and withstand test, but had PD activity present in a termination. There are obviously also those cases where a cable can fail all 3 types of tests and one could argue that even the relatively simple but effective withstand test would have been sufficient. The bottom line is that no one tool will work every time to effectively diagnose the condition of an electrical device such as a cable. The combo PD TD series offers an excellent global perspective on the true condition of a cable system.

All the combo systems are shipped in a rugged injection molded transport case/s that house the instrument and all its accessories. The PD TD combo systems combine with the HVA series of VLF AC sources. HVA Systems are sold separately. All the customer needs to provide is a Windows compatible laptop and true desire to accurately assess their cable systems.

HV Diagnostics HVA200 Partial Discharge Tan Delta

The HVA200 finally provides cable owners a cost effective, practical solution for testing their transmission class cables in the field. Ideally suited for testing 138kV transmission cables to 1.7Uo.

The HVA200 provides AC test voltages up to 140kV rms / 200kV Peak and DC up to +/- 200kV.

The unit is equally at home in the field and laboratory environments. It can be installed on a Trailer with retractable tarp that allows fast, easy and flexible test setup and tear down in a variety of field environments.

The HVA200 excellent withstand testing capability can be enhanced with the optional Tan Delta and Partial Discharge diagnostics interface providing the cable owner with a complete cable testing solution.

Features:

Features of the HVA200’s Optional PD and TD Interface:

Specs:

Note: Due to continuous development, the information may change without notice.