Permanent Partial Discharge Monitoring of Rotating Machines

A variety of stress and aging factors result in partial discharge (PD) activity in rotating machines during their service life, which can cause defects and eventual dielectric failure in the insulation of stator windings.

On-line partial discharge (PD) monitoring provides you with continuous insulation condition status of stator windings while motors and generators are in operation and under the influence of deteriorating forces.

Permanent PD monitoring systems assess PD activity over the entire service life of single or multiple machines. Based on the collected data, you are able to decide if and when it is necessary to schedule downtime and perform maintenance.

Our permanent PD monitoring system conducts sensitive PD measurements to identify potential defects before failure occurs. Noise suppression and PD source separation algorithms are used to reliably identify harmful PD activity. Warnings and alarms are triggered when user-defined PD threshold levels are exceeded.

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MONGEMO is a permanently installed, continuous on-line partial discharge (PD) monitoring system for one or multiple rotating machines, such as generators and electrical motors. It is used for assessing the insulation condition of stator windings and detecting insulation defects by continuously collecting and analyzing PD data over time. The system provides you with detailed PD trend analyses to assess a machine’s insulation state to make timely maintenance decisions.

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MONTESTO 200 is a portable solution that enables you to perform temporary online partial discharge (PD) monitoring. You can use the IP65-rated solution both indoors and outdoors on various medium-voltage and high-voltage electrical assets under load to trend PD activity and assess insulation condition. Automated software features allow you to quickly and reliably detect insulation defects and locate signal sources.


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