RTD-PD Module

Dynamic Ratings’ Resistive Temperature Detector Partial Discharge (RTD-PD) Module is specifically designed to detect partial discharge that occurs deep within the windings of motors and generators. Line-side coupling capacitors only identify PD levels close to the equipment terminals. When the RTD-PD sensor is used in conjunction with the coupling capacitor, the deflection zone is increased by the number of RTD’s monitored. This allows a more comprehensive view of the true condition of the machine’s insulation system. The RTD-PD Sensor is applied to motors and generators.

The machine resistive temperature detectors (RTDs) act as RF-antennas placed into a winding and are sensitive to the high frequency component of electromagnetic pulses caused by PD. PD pulses are decoupled from the RTD sensor by the Dynamic Ratings RTD-PD module.

RTDs improves data interpretation, helping determine if partial discharge activity exists throughout the winding or is localized in one area. Additionally, the RTD-PD module was designed to suppress noise interference and provide noise filtration, plus signal amplification for proper data analysis.

The RTD-PD module may be installed online without an outage. Temporarily disabling temperature alarms may be required.