Partial discharge (PD) is a small electrical spark within or on the surface of insulation that does not fully bridge the electrodes. Over time PD erodes insulation and is one of the earliest indicators of impending failure in medium- and high-voltage assets.
Detecting PD early lets you plan maintenance before an unplanned outage. It is widely used on cables, GIS and air-insulated switchgear, transformers and rotating machines — both as periodic spot tests and continuous monitoring.
Handheld spot testers (e.g. the Monitra range) suit routine surveys, while permanent monitoring is used on critical assets. For HV test systems and diagnostics, the b2 High Voltage range covers VLF and PD test sets.
See the wider power quality & diagnostics category, or talk to our engineers about a PD survey or monitoring programme.
Tell our engineers your application and territory — we reply with the right model, genuine pricing, calibration and buy-or-rent options across the UAE, KSA and Egypt.
Request a quote