Partial discharge analysis on instrument transformers
Partial discharges (PD), as defined by IEC60270, are localized dielectric discharges in a partial area of a solid or liquid electrical dielectric insulation system under high voltage field stress (high voltage). 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.
You can detect partial discharges already in their early stages with our testing systems. This allows you to draw conclusions regarding the condition of the insulation. At the same time, further measures such as maintenance work or additional diagnostic measurements can be initiated.