A new method at the High Voltage Department

A new method at the High Voltage Department

This year a new, very demanding testing method for the control of mineral transformer oils was introduced at the High Voltage Department.
This method involves the Partial Discharge Inception Voltage (PDIV) according to IEC 61294, which has been extended with measurements of some additional parameters for scientific and research purposes.

The measurement cell was produced in a Slovenian company according to the designs made by our engineers. The core element of the cell is the upper electrode – a pin with 1 mm diameter and a specifically determined point radius (3 µm), which must be replaced after each measurement. The pins are supplied by the Ogura Jewel Industry from Japan.

The Milan Vidmar Electric Power Research Institute has therefore become one of the rare global companies that implements this methods with the newest and modern equipment (no other institute is involved in such research in Europe).