Dielectric response analyzer OMICRON electronics
DIRANA

FDS-PDC Dielectric Response Analyzer

The most important aging indicator of transformers is the water content in the solid part of the insulation (paper, pressboard). An accurate knowledge about the actual moisture concentration is thus required in order to decide if further corrective action, such as on-site drying, is necessary.

OMICRON's DIRANA determines the moisture content in oil-paper insulations of power transformers, CT's and VT's, bushings and power cables by analyzing the dielectric response. The patented device combines the high frequency advantages of the FDS (Frequency Domain Spectroscopy) method in the upper frequency range with the test speed advantages of the PDC (Polarization Depolarization Current) method in the lower frequency range.


Applications

- Moisture assessment of any oil-paper-insulation, such as power transformers, current and voltage transformers, insulated cables and OIP bushings.
- Capacitance and dissipation factor measurements of power transformers as well as bushings, cables, generator and motor insulations
- Aging detection for bushings even at ambient temperature

More specifications...