Automatic Ratio Testers (ART-3D)
The ART-3D series are precision instruments, designed to measure turn ratios, phase displacements, excitation currents of single phase and three phase power, distribution and instrument transformers in conformity to the IEEE C57.12.90 & IEC 60076
FEAUTURES
The ART’s can also run automatic detection the winding confi gurations. The real 3 phase output allows for easy testing of phase regulating and phase shifting transformers (no need for jumper installations to short windings). The high test voltage (up to 275 Volts) is particularly interesting as it will generate higher excitation currents for larger fl ux, and therefore strong refl ected test signals are generated for high accuracy measurements even on large power transformers and transformers with tertiary windings.
 

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