Outdoor insulation

GIS MONITORING
TRANSFORMER MONITORING
OUTDOOR INSULATION
PLANT INSPECTION
GENERATORS AND MOTORS

Pollution Monitor

Pollution from a multitude of sources (eg: salt from the sea, industrial pollution and dust or sand) can build up on the surface of outdoor insulation installed on transmission lines and in substations.

Partial discharge frequency (caused by dry-band arcing) and leakage current amplitude increase significantly as a result of this pollution and the flashover withstand of the insulation is reduced. Regular washing of the insulation is usually necessary and this is often an expensive exercise, with washing intervals having to be guessed.

DMS’s Pollution Monitor is a continuous, online and permanently installed device used to remotely monitor leakage current and partial discharges, as well as a range of environmental conditions. It provides users with valuable data to enable decisions to be made objectively on when washing is required and how effective previous washes have been – improving both efficiency and system reliability.

Features

Continuous on-line monitoring of average leakage current and peak partial discharges.
Solar powered with battery management system or mains powered (110-240V).
Remote interrogation via GSM modem or fibre optic cable
Primary Protection Unit with 3 stage transient protection includes safety earth switch for maintenance staff protection.
Weather station provides temperature and humidity monitoring as standard (other sensors available upon request)
Stainless steel weatherproof enclosure
Install on AC or DC lines up to 500kV
Transmission tower or substation installation
PC based software for data interrogation, charting and alarming.
Display of average leakage current and peak discharge activity profiles

For more information, please download the product brochure below.