Increased operation reliability through PD monitoring of stator winding

Partial Discharge (PD) monitoring is nowadays a worldwide accepted method for the condition-based assessment of stator insulation. Different solutions for sensors and acquisition techniques have been recommended, applied and lately acknowledged by international technical bodies [1-2]. Therefore, there is a strong need for a versatile PD monitoring system that can be applied to different types of rotating machines, and which can be connected to a wide range of PD sensors. Such a versatile partial discharge monitoring system is described in this paper, which is applicable to different machines and can be connected to a vast range of sensors. The advantage of having a fully digital system, whose settings can be easily remotely adjusted, is shown.