The KDKC Transformer On-Load Tap Changer Tester is a comprehensive measurement instrument used for measuring and analyzing the electrical performance indicators of on-load tap changers in power system transformers and special transformers. It employs computer control and utilizes specially designed measurement circuits to achieve the measurement of parameters such as transition time, transition waveform, transition resistance, and three-phase synchronization of on-load tap changers. Users can perform measurements directly from the tap changer leads according to their needs and on-site conditions, or they can connect directly to the transformer's three-phase bushings and neutral point.

The KDKC Transformer On-Load Tap Changer Tester features functions for analyzing, storing, and printing the measured data. It addresses the current issue of outdated measurement methods for on-load tap changers in power transformers and the lack of dedicated testing equipment. This instrument can promptly diagnose potential faults in on-load tap changers during preventive tests and major overhauls of power equipment, which is crucial for enhancing the reliability of power system operation.

1. It can test Y0, Y, and △ type transformers, displaying resistance values directly without the need for conversion.

2. Data analysis is user-friendly, automatically identifying faults in the waveform and marking them.

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

4. Testing can be performed with or without the winding connected.

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

6. Continuous testing during the process saves time by reducing the need for transformer power-off.

7. This transformer on-load tap changer tester can generate Word reports, facilitating data management and queries.

8. The instrument is controlled by a small computer and equipped with an 800×480 color touchscreen.

9. It includes a high-speed printer and supports an external mouse for convenient operation.

10. The instrument can automatically save up to 1000 sets of data internally and also supports saving data to an external USB drive.

1. Three independent test power supplies, with a maximum output current of 0.5A.

2. The instrument has a sampling rate setting of 10～20KHz.

3. Maximum storage time for a single waveform is 6.4 seconds.

4. Transition resistance measurement range:

- For Y/Δ type transformers: 1-40Ω

- For Y type transformers: 1-20Ω

5. Measurement accuracy:

- 1-5Ω, Δ=±10%

- 5-40Ω, Δ=±5%

- Time error: Δ≤±1%

6. Display: 240×128T, T6963C controller.

7. Processing unit: High-speed 8-bit microprocessor, with 512K bytes of data storage, capable of storing up to 128 sets of waveforms.

8. High-speed A/D converter, with a maximum sampling rate of up to 400KHz.

9. Power supply: 220V±10%, 50Hz, power consumption: 200W.

10. Dimensions: 410mm×320mm×200mm.

11. Weight: 20kg.