Interchangeable test leads with Three-phase Winding Ohmmeters & Tap Changer Analyzers TWA
Application:
Turns ratio measurement
Turns ratio deviation calculation
Excitation current measurement
Phase angle measurement
Automatic vector group detection
Verification of demagnetization process
Magnetic balance test
System overview:
TRT400 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. TRT400 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.
TRT400 is based on a state of the art technology, using the most advanced technique available today. The test set can be used to test single-phase and three-phase transformers, both with and without taps in accordance with the requirements of the IEC 60076-1 standard.
For a three-phase measurement, the test set is connected to all the three phases of a transformer to be tested. If specific vector diagrams are selected for different types of transformers, the TRT400 will run a specific test for each transformer type (i.e., single phase, Delta to wye/star, Wye/Star to delta, Delta to delta, Wye/Star to wye/star, Delta to zig-zag,etc.) without a need to switch the test hookup cables. In addition, it can perform the test with true three-phase test voltage, allowing testing any transformer type. Following the test, it displays a turns ratio, phase shift, and excitation current obtained with single-phase and/or true three-phase test voltages.
DV-Win Software:
The DV-Win software is included in the purchase price, and all its updates are free of charge.
The software allows full control of TRT400 functions from a PC, creating and storing test templates, and downloading test results from the instrument’s internal memory.
All results are presented both numerically and graphically, for an easy and convenient analysis.
Test results can be directly exported to excel document.
Customized test report can be generated, edited, saved in several file formats including pdf, and printed.
Mains Power Supply:
Connection: according to IEC/EN60320-1; UL498, CSA 22.2
Mains supply: 90 – 264 V AC, 50/60 Hz
Input power: 250 VA
Fuse: 2 A / 250 V, type F, not user replaceable
Output Data:
Single-phase test voltages 1, 8, 10, 40, 80, 100, 170, 250, 430 V AC
True three-phase test voltages 3x(1, 8, 10, 40, 80, 100, 250)3 V AC
Measurement:
Turns ratio measuring range: 0,8 – 50 000
Turns ratio resolution: 5 digits
Typical turns ratio accuracy:
@430 & 250 V AC
0,8 – 999: ±0,03%
1 000 – 3 999: ±0,05%
4 000 – 14 999: ±0,05%
15 000 – 19 999: ±0,05%
20 000 – 50 000:±0,1%
@170, 100 & 80 V AC
0,8 – 999: ±0,05%
1 000 – 3 999: ±0,05%
4 000 – 14 999: ±0,1%
15 000 – 19 999: ±0,2%
20 000 – 50 000: ±0,25%
@40 V AC
0,8 – 999: ±0,05%
1 000 – 3 999: ±0,1%
4 000 – 14 999: ±0,2%
15 000 – 20 000: ±0,3%
@10 & 8V AC
0,8 – 999: ±0,05%
1 000 – 3 999: ±0,1%
4 000 – 15 000: ±0,2%
@1V AC
0,8 – 999: ±0,05%
1 000 – 4 000: ±0,1%
Excitation current range: 0 – 2 A
Excitation current resolution:
0,0000 – 9,9999 mA: 0,1 μA
10,000 – 99,999 mA: 1 μA
100,00 – 999,99 mA: 10 μA
1,0000 – 2,0000 A: 100 μA
Typical excitation current accuracy: ±(0,25% rdg + 500 μA)
Phase angle range: 0 – 360º
Phase angle resolution: 0,01º
Typical phase angle accuracy: ±0,05º
Display:
7” graphical touch screen display
Interface:
Ethernet
USB
Internal Memory: SD card 4GB
Printer (optional):
Built-in thermal printer
Paper width 112 mm / 4.4 in
Applicable Standards
Installation/Overvoltage category: II
Pollution degree: 2
Safety: LVD 2014/35/EU (CE Conform); Standard EN 61010-1:2001
EMC: Directive 2014/30/EU (CE Conform); Standard EN 61326-1:2006
Please feel free to contact for detailed specifications, accessories, software and options.