Non-Intrusive Partial Discharge Detection; Introduction - GDZX ZXPD-100K Instructions Manual

ZXPD-100K
I. Non-intrusive Partial Discharge Detection

1.1 Introduction

Partial discharge does not cause the electric discharge of
a completely short-circuited electrode. Such discharge
usually has a very small amplitude value, but it will
certainly cause the continuous deterioration of the
property of the insulation layer and finally cause electric
equipment fault.
The non-intrusive
partial discharge
detection, as a
convenient and
simple method, is
used for identifying
the potential insulation faults which may cause power
cutoff or personal injury.
The partial discharge emits energy in following manners:
Electromagnetic energy: radio wave, light and heat;
Sound energy: sound wave and ultrasonic wave;
Gas: ozone and nitric oxide.
The most practical non-intrusive detection technologies