ART-3D - Transformer Turns Ratio Instrument

The ART-3D is high precision instrument designed to measure ratios, magnetization currents, phase-shifting in power transformers, distribution transformers, potential and current transformers, in conformity to IEEE C57.12.90 and CEI/IEC 60076.

With its real 3-phase test circuit the ART-3D can address complex ratio measurements of Phase-Shifting/ Regulating or irregular vector group type transformers otherwise impossible to achieve with conventional ratio meters. Zigzag type transformers testing is very easy and will not require the installation of jumpers or the use of relay matrix circuits. The single or real 3 phase voltage output up to 275V is very interesting as it contributes to higher magnetisation currents and therefore stronger flux for better signal reflection on secondary and/or tertiary windings allowing more accurate results. The ART-3D phase displacement measurements enables for simple detection of the transformer vector group.

Main features:

  • Real 3 phase test voltage output
  • Up to 275 volts output for high accuracy
  • Optional tertiary winding channel
  • Fully automatic tap changer test mode
  • Large color, sunlight readable, touch screen display
  • USB thumb drive & Ethernet ports
  • Easy cable management

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