True 3Phase Transformer - Turns Ratio Tester TRT4x

TRT4x is a true three-phase, fully automatic test set specially designed for turns ratio, phase shift, and excitation current measurements of power, distribution and instrument transformers. TRT4x determines the transformer turns ratio by applying voltages across high voltage windings, accurately measuring voltages across the unloaded transformer windings, and then displaying the ratio of these voltages.

TRT4x is based on a state of the art technology, using the most advanced technique available today. The test set can be used to test singlephase and three-phase transformers, both with and without taps in accordance with the requirements of the IEC 60076-1 standard.
Features
Specially designed option for testing capacitive voltage transformers
Test voltages from 1 to 125 V AC
Up to 5 kV AC with additional CVT40
Turns ratio range 0,8 50 000
The best turns ratio accuracy of 0,05%
Single-phase test voltage
True three-phase test voltage
Automatic vector group detection
Detailed analysis of test results using DV-Win software
Interchangeable test leads with Three-phase Winding Ohmmeters & Tap
Changer Analyzers TWA
  TRT40A TRT43A
TEST VOLTAGES (8,40,125) V AC
3x(8,40,125)√3 V AC
(1,8,40,125) V AC
3x(1,8,40,125)√3 V AC
RATIO RANGE 0,8 to 50 000
(5-digit Resolution)
0,8 to 50 000
(5-digit Resolution)
BEST RATIO ACCURACY 0,05 % 0,05 %
EXCIT. CURRENT RANGE 0 2 A 0 2 A
EXCIT. CURR. ACCURACY (0,25% + 500 A) (0,25% + 500 A)
BEST EXCIT. CURR. RESOLUTION 0,1 A 0,1 A
PHASE ANGLE RANGE 360 Degrees 360 Degrees
PHASE ANGLE ACCURACY 0,05 Degrees 0,05 Degrees
PHASE ANGLE RESOLUTION 0,01 Degree 0,01 Degree
USB FLASH DRIVE FEATURE yes yes
BUILT-IN TC CONTROL yes yes
BUILT-IN THERMAL PRINTER OPTIONAL OPTIONAL