Bantam - Model PDAlert - Motor Instruments Brochure

PDAlert instrument measures stator winding partial discharges caused by Inverter Fed Drives (IFDs). IFDs create thousands of fast rise time voltage surges per second. These surges sometimes lead to stator failure. The PDAlert instrument is the first on-line device which allows non-specialists to easily measure PD in each phase, under fast rise time surges. When combined with certain surge testers, PDAlert instrument also enables users to determine PD inception and extinction voltage off-line. The PDAlert instrument outputs analog signals to display the PD on a high speed digital oscilloscope.