The KDKC-209 transformer on load tap changer tester is a comprehensive measuring instrument used to measure and analyze the electrical performance indicators of power transformers and special transformer on load tap changers in power systems. By using a specially designed measurement circuit controlled by a computer, it is possible to measure the transition time, transition waveform, transition resistance, three-phase synchronicity, and other parameters of the on load tap changer. Users can directly measure them from the tap changer leads according to their needs and site conditions, or directly measure them from the transformer three-phase bushing and neutral point connections. A comprehensive measuring instrument used to measure and analyze the electrical performance indicators of on load tap changers for power transformers and special transformers in power systems. It is controlled by a microcomputer and can achieve precise measurement of parameters such as transition time, transition waveform, transition resistance, and three-phase synchronicity of on load tap changers through a designed precision measurement circuit. Users can measure directly from the tap changer leads according to their needs and on-site conditions, or measure directly from the three-phase bushing and neutral point of the transformer.

1. Test Y0, Y, and △ transformers, and display the resistance values directly without conversion.

2. Humanized data analysis can automatically identify faults in the middle of the waveform and mark them.

3. The waveform display automatically adjusts the amplitude of resistance and time based on the sampled data.

4. It can be tested with or without windings.

5. The four terminal wiring method provides high-precision resistance measurement without the need for wire compensation.

6. Continuous testing can be conducted during the testing process to save time on transformer power outages.

7. This transformer on load switch tester can generate Word reports for easy data management and querying.

8. The instrument is controlled by a small computer and equipped with an external 800 × 480 color LCD touch screen.

9. High speed printer, supports external mouse, easy to operate.

10. The instrument can automatically save 1000 sets of data internally, or it can be saved externally with a USB flash drive.

1. Three independent test power supply, 3A/1A mode; 0.6A/0.2A gear

2. Maximum voltage of port: 24V

3. Set the sampling rate of the instrument to 10-30KHz;

4. Resistance measurement range: 0.3-40 Ω

5. Voltage mode: 1A mode: 0.4 Ω~20 Ω 0.2A mode: 10 Ω~100 Ω

6. Transition resistance range: 100 Ω

7. Resistance resolution: 0.05 Ω

8. Accuracy: Transition resistance: ± 5% reading ± 0.1 Ω

9. Time measurement range: 1ms to 300ms

10. Time resolution: 0.1ms

11. Time measurement accuracy: 1ms to 100ms ± 0.1ms; 100ms～300ms±1%

12. Accuracy: Transition time: ± 0.5% Reading ± 0.2mS

13. Three phase synchronicity: 0.1ms; Sampling frequency: 10~20KHz

14. Processing section: High speed 32-bit microprocessor, capable of storing up to 1000 sets of waveforms;

15. High speed A/D converter with a maximum sampling rate of 400KHZ;

16. Power supply: AC220V 10%; Power of 180W.

17. Size: 420mm * 350mm * 220mm.

18. Weight: 12kg