Transformer Turns Ratio Tester DV Power TRT33A
SKU: TRT33AX-EU-R1
The TRT33A device is specifically designed for measuring the turn ratio of transformer windings. Single-phase and three-phase measurement of three-phase transformers and current transformers. It is built to comply with the safety standard IEC 61010-1, ensuring safe operation during testing procedures.
- Test voltage 1 V – 100 V
- Measuring range 0,8 – 50 000
- Typical accuracy ± (0,05 % rdg to 0,2 % rdg)
Estimated shipping time 4-5 weeks
The DV Power TRT33A is a Transformer Turns Ratio Tester that is commonly used for measuring the turn ratio of transformers. The turns ratio test is a crucial maintenance test for power transformers. The tester is designed to provide accurate turns ratio measurements with a precision of 0.05%.
The device is part of the TRT Standard Series and is a fully automatic test set. It is specifically designed for conducting turns ratio, phase shift, and excitation current measurements. With its advanced features and capabilities, the device enables efficient and reliable testing of transformers.
The DV Power tester is indeed a specialized device that provides accurate and automated measurement of transformer turn ratios. It is commonly used during various stages, including manufacturing, commissioning, and testing of different types of transformers:
- Power transformer
- Distribution transformer
- Instrument transformer
How To Use Transformer Turns Ratio Tester?
The tester is primarily designed for measuring of transformer turn ratio, automatically applying voltages across HV windings, measuring voltages across the unloaded transformer winding and then displaying the ratio of these voltages.The Transformer Turns Ratio Tester is a precise measuring tool that generates a true single-phase and three-phase AC 50/60 Hz voltage.
Transformer Turns Ratio Tester Design
The device is a reliable test device that can store up to 10 000 measurements in internal memory. A built-in thermal printer is available as an option. DV-TR software is included in the purchasing price and communicates with the TRT03A turns ratio tester via USB or RS232 interface. It allows users to run the test remotely from a PC, download test results, analyze them, and generate fully configurable test reports. As a digital turns ratio meter, it is the ideal choice for industries that require precise and consistent measurement.Connecting Transformer Turns Ratio Tester to a Test Object
TRT is programmed to automatically test turns ratio, phase shift, and excitation current of power and distribution transformer types defined by CEI/IEC, IEEE, and ANSI standards. Using two sets of four cables, all bushings of the primary and the secondary sides are connected at once.The TRT device implements Kelvin's (four-point) measurement principle for its connection principle. This principle is designed to enhance the accuracy of measurements by employing separate terminals for voltage generation and voltage measurement.
In this configuration, one side of the measuring clamps is connected to the "Voltage Generate Sense" terminals, while the other side is connected to the "Voltage Measurement Sense" terminals. By doing so, the impact of voltage drops in the voltage generating cables is effectively eliminated from the turns ratio measurement.
This setup ensures precise and reliable voltage readings by minimizing any additional voltage drops that could occur in the measurement setup.
| Product information | |
|---|---|
| Product name | Transformer Turns Ratio Tester DV Power TRT33A |
| Brand | DV Power |
| Country of origin | Sweden; |
| Turns Ratio Measurement | |
| Test voltages | 1 V, 8 V, 40 V, 100 V AC |
| Turns ratio measurement range | 0,8 – 50 000 |
| Turns ratio resolution | 5 digits |
| Typical accuracy | from ± 0,05 % rdg to ± 0,2 % rdg |
| Excitation Current Measurement | |
| Excitation current range | 0 – 2 A |
| Excitation current resolution | 0,1 μA – 100 μA |
| Typical excitation current accuracy | ± (0,25 % rdg + 500 μA) |
| Phase Angle Measurement | |
| Phase angle range | 0 – 360° |
| Phase angle resolution | 0,01° |
| Typical phase angle accuracy | ± 0,05° |
| Power Supply | |
| Supplied by | Mains power |
| Mains power connection acc. to | IEC/EN60320-1 UL498, CSA 22.2 |
| Mains power input voltage | 90 – 264 V AC |
| Mains power input frequency | 50/60 Hz |
| Input power | 200 VA |
| Data Storage | |
| Storage | 10 000 internal memory positions |
| Computer Interface | |
| Interface v1 | USB (standard) |
| Interface v2 | RS232 (optional) |
| Display | |
| Display v1 | LCD screen with 20 characters by 4 lines |
| Display v2 | LCD with backlight |
| Printer (optional) | |
| Printer | Built-in printer |
| Paper width | 58 mm (2,3 in) |
| Environmental Conditions | |
| Operating temperature | -20 ºC – +60 ºC (-4 ºF – +140 ºF) |
| Storage & transportation | -40 ºC – +70 ºC (-40 ºF – +158 ºF) |
| Humidity | 0 % – 95 % relative humidity |
| Applicable Standards | |
| Installation/overvoltage | CAT II IEC/EN 61010-1 |
| Pollution | degree 2 |
| Low voltage directive | Directive 2014/35/EU (CE Conform) |
| Electromagnetic compatibility | Directive 2014/30/EU (CE Conform) EN 61326-1 |
| Dimensions and Weight | |
| Dimensions (W x H x D) | 194 x 478 x 390 mm (7,6 x 18,8 x 15,4 in) |
| Weight | 8 kg (17,6 lbs) |
- Cable bag
- Ground (PE) cable
- USB cable
- H winding test cable 5 m, 3~ connection with TTA clamps
- H winding test cable extension, 5 m, shielded
- Mains power cable EU 10 A
- Plastic transport case – medium size
- USB with DV-TR software
- Tap changer control cable 5 m
- TRT33A device
- X winding test cable, 5 m, 3~ connection with TTA clamps
- X winding test cable extension, 5 m, shielded
The software provides numerous advantages, such as downloading test results from the instrument, acquisition of test results, creating graphs for easier analysis, creating test reports and saving them in several different formats.
All results are displayed both numerically and graphically, making analysis as easy as possible. Test reports, generated with a single click, can be quickly customized, and directly printed or saved.
