More info
Description / Abstract:
This recommended practice describes the test procedure for the
detection and measurement by the wideband apparent charge method of
partial discharges (PDs) occurring in liquid-filled power
transformers and shunt reactors during dielectric tests, where
applicable.
Purpose
PD measurements in transformers and shunt reactors should
preferably be made on the basis of measurement of the apparent
charge. Relevant measuring systems are classified as narrowband or
wideband systems. Both systems are recognized and widely used.
Without giving preference to one or the other, it is the object of
this document to describe the wideband method. General principles
of PD measurements, including the narrowband method, are covered in
IEC 60270 and IEC 60076-3 [B71].1, 2
1 Information on references can be found in Clause
2.
2 The numbers in brackets correspond to those of the
bibliography in Annex H.