Partial Discharge Analysis

Partial discharges (PD), as defined by IEC 60270, are localized dielectric discharges in a partial area of a solid or liquid electrical dielectric insulation system under high-voltage field stress. Partial discharges in a transformer deteriorate its insulation and can lead to failure of the transformer.

Diagnostic PD measurements are recommended after conspicuous measured values, such as  increased gas-in-oil values or after a failed PD measurement during acceptance tests.

With our testing systems, you can detect partial discharges already in their early stages or determine their source locations acoustically. This allows you to draw conclusions regarding the condition of the insulation. At the same time, further measures such as repair or additional diagnostic measurements can be initiated.

Recommended solutions for partial discharge analysis on power transformers

MPD 600

For high-end measuring and analysis needs

PDL 650

Acoustic partial discharge localization

CPC Sync

HV source for PD measurements