YNBC-T special transformer transformation ratio tester is the second generation of transformation ratio test equipment launched by our company in 2012. It can be used for three-phase transformer testing of power systems, and is especially suitable for testing Z-winding transformers, rectifier transformers and balance transformers. The instrument uses a large-screen LCD display, full Chinese menus and print output of Chinese characters. It has a friendly man-machine interface, complete functions and easy operation. It is used by power systems, transformer manufacturers and railway electrical systems to perform transformer ratio, group, polarity, and The ideal instrument for angle testing.

1. The instrument comes with a lithium battery, and the transformation ratio test can be carried out without an external power supply on site, and at least 100 transformers can be tested on a single charge;

2. The instrument integrates single-phase and three-phase standard power supplies with stable amplitude and constant phase.

3. The internal standard power supply has large output power and 5A output, which is especially suitable for low-voltage transformer testing and semi-finished product turns testing in the manufacturing process of CT and PT.

4. Accurately and quickly test the turns ratio, turn ratio error and phase difference of current transformer (CT) and voltage transformer (PT).

5. Test single-phase or three-phase transformers, suitable for Scott, reverse Scott and balance transformer tests of Z-winding transformers, rectifier transformers and railway electrical systems.

6. The test accuracy is high. The instrument adopts 16-bit high-precision AD and high-speed DSP processor, which effectively guarantees the measurement accuracy and anti-interference ability.

7. The instrument adopts non-partial discharge voltage regulation output, and the voltage regulation and measurement speed are fast. It only takes 5 seconds to complete the boost and test;

8. The instrument automatically judges the rated transformation ratio of the current tap: When testing a multi-tap transformer, you only need to enter the voltage regulation ratio of the tap switch once to perform the test without entering the current tap number, which greatly improves work efficiency.

9. Internal overcurrent protection and wiring check function.

10. Large 320x240 screen, high-brightness LCD display, full Chinese character menu and operation prompts to realize friendly man-machine dialogue. Rotating the mouse makes the operation easier.

11. Comes with a real-time electronic clock, which automatically records the date and time of the test, which is conducive to the preservation and management of the test results.

12. Panel thermal printer can quickly print test results on site.

13. The data has the functions of power-off storage and browsing, can store 1000 sets of experimental results, and can transmit data online with the computer.

1. Environmental conditions

Temperature: -5°C～40°C

Relative humidity: <95% (25°C)

Altitude: <2500m

External interference: no strong vibration, no strong electromagnetic field

Power supply: 160VAC~280VAC, 45Hz~55Hz

2. Measuring range

Test range of transformation ratio: 0.5~10000

Group test range: 1~12

Angle difference test range: 0~360°

3. Test accuracy

Measurement accuracy of transformation ratio: +0.1% (0.5~1000)

+0.2%(1001~2000)

+0.5%(2001~4000)

+1%(4001~10000)

Angle difference measurement accuracy:: 30`

4. Insulation strength

The insulation resistance of the voltage and current input terminals to the chassis is ≥100MΩ.

The power frequency is 2KV (effective value) between the input end of the working power supply and the shell, and the experiment lasted 1 minute.