Temporary 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.

Temporary PD monitoring systems are used to periodically assess PD activity in motors and generators over a specified time. Based on the collected data, you are able to decide if and when it is necessary to schedule downtime and perform maintenance.

These monitoring systems conduct 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 threshold levels are exceeded.

Benefits of this solution

Portable solution

All that you need is included in a rugged, wheeled case that is easy to transport to various locations. The IP65 rated hardware device can be used indoors and outdoors and mounted on or near the asset for temporary partial discharge monitoring.

Plug-and-play setup

The on-line temporary PD monitoring device can be easily connected via a terminal box to permanently installed partial discharge sensors. This enables quick and safe plug-and-play connections during setup without having to shut down the asset to prevent unnecessary downtime.

Remote data access

A built-in computer enables long-term data collection and archival. With and Internet connection, the computer can be remotely accessed and setup by the user to send email alarm notifications when PD levels exceed user-defined thresholds.

Convenient analysis tools

Automatic software features, such as 3PARD (3-Phase Amplitude Relation Diagram) and Automatic Cluster Separation, separate noise from PD signals to help you easily and reliably determine the signal source.

MONGEMO

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.