Partial discharge analysis on power transformers
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.