Diagnostic OLPD Spot Testing 

We work closely with our customers to provide tailored and cost effective On-Line Partial Discharge (OLPD) test and monitoring programmes across complete MV and HV networks. Our technology is used to support our clients to make condition-based asset management decisions.
The diagnostic phase typically involves The HVPD Kronos® Spot Tester and the HVPD Longshot™. This type of technology allows more detailed testing to be undertaken where OLPD data is collected from all three phases at once (to within 10 ns on all channels on advanced test units). This enables discharge type, phase-to-phase or phase-to-earth, to be ascertained. Typical diagnostic spot test times range from around ten minutes to one hour per asset with detailed data analysis and reports often required upon completion of the tests. If OLPD activity is detected, then the diagnostic testing is extended to locate the source of the PD site(s) within the circuit under test. In the case of HV cables, OLPD Cable Mapping is carried out to locate the source(s) of PD activity along the cable circuit.


HVPD Kronos Spot Tester 4-Phase