This standard adopts IEC 60270:2000 and defines methods of measuring partial discharges that may occur in energized power switchgear apparatus, in flaws, voids, and interfaces of non-self restoring insulation that may lead to dielectric failure of the switchgear.

This International Standard is applicable to the measurement of partial discharges which occur in electrical apparatus, components or systems when tested with alternating voltages up to 400 Hz or with direct voltage. This standard - defines the terms used; - defines the quantities to be measured; - describes test and measuring circuits which may be used; - defines analogue and digital measuring methods required for common applications; - specifies methods for calibration and requirements of instruments used for calibration; - gives guidance on test procedures; - gives some assistance concerning the discrimination of partial discharges from external interfere...

The electrical Partial Discharge (PD) measurement has been proven for many years as a valuable tool for assessment of the insulation condition of HV equipment. The procedure is preferably performed on the basis of the PD quantity apparent charge using either the wide-band or a narrow-band measuring method. This Standard recommends using the wide-band method that allows partial discharge pattern recognition. This standard adopts IEC 60270 2000-12 for the following main items: definition of the terms used; the quantities to be measured; test and measuring circuits which may be used; analogue and digital measuring methods required for common applications; metho...