Offline Partial Discharge

Sensitive testing for commissioning and scheduled outages

Offline PD measurements are carried out by raising the voltage in incremental steps to the withstand test level while monitoring the PD activity.

If PDs occur, the voltage at which they initiate is the partial discharge inception voltage (PDIV) the voltage level is then reduced until the PDs extinguish - this is the partial discharge extinction voltage (PDEV).

Offline PD testing is most commonly used for motors, generators and cables using VLF or 50/60Hz power supplies.

We can implement a series of highly sensitive Offline tests at the commissioning stage, or fit into your routine shutdowns, to help to improve the efficiency of your CBM plan.

To find out more about Offline PD testing, contact us via our online form.

For any help or enquiries about how we can help you, call us on 0161 877 6142 or complete our online enquiry form


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