Special Transformer Ratio Tester DYBC-TZ

1、 Functional features

1. Real three-phase test: single-phase power input, internal digital synthesis three-phase standard sine wave signal source, through high fidelity power amplifier, generate three-phase test power supply (distortion less than 0.1%, symmetry better than 0.05%) output, test results have better equivalence, no group misjudgment and other phenomena.

2. Powerful function: it can not only conduct single-phase measurement, but also realize automatic testing of three-phase windings. Single phase and three-phase can measure polarity and phase angle. It can measure AB, BC, CA three-phase transformation ratio, phase angle value, error, tap position, tap value and other parameters at one time, and can automatically identify group number (0-11 is equivalent to 1-12).

3. Phase angle measurement function: accurately measure the phase angle (0-360 °) between the high and low voltage sides, and can measure the transformation ratio and angle of non integral point transformers.

4. Hexagonal diagram display function: the test results are displayed in digital and hexagonal vector diagrams to visually see the transformer connection groups.

5. Blind test function: there is no need to select the connection mode, no need to select the connection group, no need to measure the external short circuit of Y/△, △/Y transformers, and the connection mode can be automatically switched according to the selected test content. It is completely possible to measure the transformation ratio and group number of transformers without nameplates.

6. Tap test: it can quickly measure the transformation ratio and transformation ratio error at each tapping switch position. The rated transformation ratio only needs to be input once, and transformation ratio error at each tapping position can be calculated without repeated input.

7. At the same time, it has two functions: turn ratio measurement and operating voltage transformation ratio measurement. The operating transformation ratio can more truly reflect the actual value of voltage transformation ratio under the actual operation of the transformer.

8. Good vibration resistance: the use of military connectors enhances the vibration resistance.

9. The 5-inch high-definition true color LCD screen is used to display the data effect and the vector map effect.

10. The test source used in this instrument is a standard sine digital source of digital synthesis, with distortion less than 0.1%, which is not affected by the quality of the working power supply.

11. Easy to carry: small size, light weight.

12. High capacity lithium-ion rechargeable battery is equipped internally, so the test can be completed without any power supply on site, and more than 500 consecutive measurements can be made after a full charge.

2、 Technical indicators

1. Transformation ratio measurement range: 0.9~10000

2. Measuring speed: complete three-phase test within 35 seconds

3. Measurement accuracy: the measurement accuracy of high-voltage side voltage is 0.05%

Measurement accuracy of low-voltage side voltage 0.1%

Phase angle resolution: 0.01 °

Phase angle measurement accuracy: 0.1 °

Transformation ratio resolution: 0.0001

Transformation ratio measurement accuracy 0.1% (0.9-2000)

0.2%（2000－10000）

According to the user's requirements, the full range 0.1 class equipment can be customized

4. Easy to carry, suitable for field operation

5. Overall dimension: 258 × one hundred and fifty-eight × fifty-eight

6. Weight: 1.8Kg