Vanguard Instruments TRI-PHASE VAN-TRI-PHASE True Three-Phase Transformer Turns-Ratio Tester
The Tri-Phase is a true three-phase transformer turns-ratio tester designed to
conform to the IEEE C57.12.90 measurement standard. The Tri-Phase generates
and outputs a three-phase excitation test voltage to the three transformer
primary windings. The induced three-phase secondary voltages are sensed,
and the transformer turns-ratio is calculated.
The Tri-Phase can measure turns-ratios from 0.8 to 15,000.
The three-phase turns-ratios, excitation current, and phase angle
readings are displayed on the units LCD screen. Since a three-phase voltage is
used to excite the transformer windings, the Tri-Phase can detect and measure
turns-ratios of any transformer type, including phase-shifting transformers.
The Tri-Phase can be used as a stand-alone unit or can be computer-controlled.
Input Power: 3 amps, 100-240 Vac, 50/60 Hz
Test Voltages: Three-phase, 8 Vac @ 1 Amp, 40 Vac @ 0.2 Amps, 100 Vac @ 0.1A
Excitation Current Reading Range: 0-2 Amperes; Accuracy: 0.1 mA, 2% of reading
Phase Angle Measurement: 0-360 degrees; Accuracy: 0.2 degree ( 1 digit)