A Pragma Group Company

Partial discharge sensor

Generators and Motors

Generators and Motors



Switchgear and Cables

Switchgear and Cables



Transformers

Transformers

   

Partial discharge monitoring is an effective on-line predictive maintenance tool for medium and high voltage motors, generators, cables transformers and switchgear at 3300 volt and above, as well as other electrical distribution equipment. The benefits of on-line monitoring allow for equipment analysis and diagnostics during normal production and gives 24/7 coverage and protection. Corrective actions can be planned and implemented, resulting in reduced unscheduled downtime.

Electrical Diagnostic Innovations (EDI) manufactures Continuous Monitors that are all microprocessor-based devices that continuously monitor the insulation system for partial discharge activity as well as other parameters such as temperature and humidity. Depending upon the applications the systems are configured with different sensors for optimal PD detection.

RMM

The Rotating Machine Monitor is installed on medium voltage motors, turbine generators or hydro generators to monitor PD activity. The system is modular with a basic unit that has 15 partial discharge channels. In addition to PD monitoring via a range of sensors including RTD’s, the RMM allows for permanent on-line monitoring of vibration, supply voltage, load current, stray flux, shaft voltage and current plus current signature analysis. 

SCM

The Switchgear and Cable Monitor continuously monitors the insulation system for partial discharge activity as well as other parameters such as temperature and humidity. Application for the SCM includes switchgear, bus duct and cable systems. With up to 90 partial discharge channels available with one system by adding additional PDM’s on can cover most switchgear installations.

DTS

The Diagnostic Transformer Monitor continuously monitors bushing insulation Tan delta and Capacitance and partial discharges that may be produced due to bushing and transformer insulation defects. With additional load current signals it allows the detection of critical winding deformation resulting from short circuits.

For more information contact Martec or visit the EDI website.