|
|
|
| HOME > 제품안내 > > ENGLISH > PD Tester |
|
Earlier the testing of insulators and other equipment was based on the insulation resistance measurements, dissipation factor measurements and breakdown tests,
It was observed that the dissipation factor was voltage dependent and hence became a criterion for the monitoring of the high voltage insulation.
In further investingations it was found that weak points in an insulation like voids, cracks, and other imperfections lead to internal or intermittent discharges in the insulation.
These imperfections being small were mot revealed in capacitance measurements but were revealed as power loss
cmponents in contributing for an increase in the dissipation factor.
In modern terminolagy these are designated as "partial discharges" which in course of time reduce the strength of
insulation leading to a total or partial failure or breakdown of the insulation.
|
|
|
AC/DC PATRIAL DISCHARGE
EQUIPMENT |
CALIBRATOR |
AC TRANSFORMER |
 |
 |
 |
|
COUPLING CAPACITOR |
PD DETECTOR |
 |
 |
 |
|
| Model |
DY-A911 |
Input Voltage |
0~75kV |
Capacitance |
10kA |
Output Current |
67mA |
|
|
|
|
