To take action on weak insulations quickly, the failure location must be known. Upcoming insulation defects already produce measurable partial discharges (PD). These partial discharges emit electrical impulses and acoustic signals at the same time.
The PDL 650 measures acoustic signals with multiple sensors spread over the transformer. Then the software determines the failure location using the time difference of all incoming signals. Finally, these coordinates are shown in a 3D model of the transformer.
Key features
Efficient because repairs and spare parts are predictable when failure location is known
Easy creation of reports and records
Safe due to galvanic separation of operator from high-voltage
Convenient and handy through light weight, small size and battery operation
Applications
Manufacturing process of transformers
Final acceptance test at transformer manufacturers
Yearly maintenance of transformers
Localizing failures prior to necessary repairs
