portable partial discharge monitor
Online partial discharge measurements detect failures in the stator winding insulation in operation. Online partial discharge measurements can be taken either periodically with a portable partial discharge analyzer or continuously with a permanently installed monitoring system. Partial discharge monitoring is applicable on large hydrogenerators or on turbogenerators
Partial discharge coupler
Typical faults detections
Delamination of single conductor to main insulation
Delamination of the main insulation
Abrasion of the corona slot protection
Partial discharge couplers installed on each generator phase exit.