The ICMmonitor is part of the Power Diagnostix ICMseries of digital partial discharge detectors. The ICMmonitor is a compact, stand-alone instrument for evaluating the condition of medium and high voltage insulation. A built-in four-, or eight-channel multiplexer offers scanning of three-phase systems or multiple sensors. It is used principally for permanent, continuous on-line monitoring of rotating machines, cable systems, power transformers, and gas-insulated switch gear (GIS).
The SPECmonitor is a partial discharge (PD) measurement device comprising aspectrum analyzer, an acoustic detector, and a conventional PD monitor in one instrument. This combination enables PD measurements even with high levels of background noise e. g. on power transformers within substations or power plants.
Observing the frequency spectrum of a harshly disturbed PD signal allows to select frequency bands with less disturbances. Using this center frequency for a PD acquisition, gives a largely improved signal-to-noise ratio resulting in a clear pattern acquisition.
The GISmonitor is a scalable monitoring device for continuous monitoring of gas-insulated switchgear (GIS) using true prarallel, real-time acquisition techniques.It builds on 15 years experience in online PD monitoring on rotating machines, transformers, cables, and especially GIS systems.
It combines proven technology of the ICMmonitor with new processor technology and embedded hardware capabilities. The hardware core of the system has been optimized for parallel, real time PD acquisition on multiple channels. Any UHF signal can be detected and digitized within micro seconds. A separation of PD events from external disturbances or internal switching pulses is calculated in real time and therefore an effective PD and alarm detection is given.