KEFKG-A Type Transformer On-Load Tap Changer Tester

Product Name: Transformer On-Load Tap Changer Tester
Product Model: KEFKG-A
Alternative Names: 1. On-Load Tap Changer Tester
                 2. Transformer On-Load Tap Changer Characteristic Tester
                 3. Fully Automatic On-Load Tap Changer Tester
                 4. Intelligent Transformer On-Load Tap Changer Characteristic Tester

I. Product Overview
       The KEFKG-A Type Transformer On-Load Tap Changer Tester is a comprehensive measuring instrument used for measuring and analyzing the electrical performance indicators of on-load tap changers in power transformers and special transformers within power systems. It employs computer control and a specially designed measurement circuit to measure parameters such as transition time, transition waveform, transition resistance, and three-phase simultaneity of the on-load tap changer. Depending on needs and field conditions, users can directly measure from the tap changer leads or connect directly from the transformer's three-phase bushings and neutral point.
       This instrument features functions such as data analysis, storage, and printing. It addresses the current backward measurement methods and lack of specialized testing tools for on-load tap changers in power transformers. It can promptly diagnose potential faults in on-load tap changers during preventive testing of power equipment and transformer overhauls, which is of great significance for improving the reliability of power system operation.
       This tester is highly intelligent, with full Chinese menu prompts and simple operation. The instrument is compact, lightweight, and has strong anti-interference capabilities, greatly reducing the labor intensity of field personnel. It is an ideal instrument for power generation and supply units, as well as the transformer manufacturing industry, to ensure safe production and improve product quality.
II. Features
      1. Large output current, lightweight;
      2. Open-circuit output voltage of 30V, capable of testing transition resistance up to 30Ω at 1A current;
      3. Automatically calculates transition resistance and transition time values;
      4. Comprehensive protection circuit, high reliability;
      5. 5.7-inch large LCD display for convenient field operation;
      6. Storage function for data waveform analysis.
III. Technical Parameters
      1. Three independent test power sources, maximum output current: 1A;
      2. Sampling rate: 10-20 kHz;
      3. Maximum single waveform storage time: 6.4 seconds;
      4. Transition resistance measurement range: ≤40Ω for Y/△ transformers, ≤20Ω for Y-type transformers;
      5. Measurement accuracy: Δ ≤ 10%;
      6. Simultaneity error: 0.2 ms;
      7. Display: 240×128 T, T6963 controller;
      8. Printer: MP-40-8 panel-front paper replacement printer;
      9. Microcontroller processing unit:
           80C320 high-speed 8-bit microprocessor;
           512 KB power-off data retention memory;
           High-speed A/D converter, maximum sampling rate up to 400 kHz;
   10. Power supply: AC220V ±10%, power ≤200 W;
   11. Dimensions: 410 mm × 320 mm × 215 mm;
   12. Weight: ≤7 kg
IV. Operating Conditions
     1. Ambient temperature: -10℃ to 50℃
     2. Ambient humidity: ≤85% RH
     3. Operating power supply: AC220V ±10%
     4. Power frequency: 50 ±1 Hz

Note: The product is continuously updated and improved during production. The product appearance images are for reference only (subject to the actual product). Changes may occur without prior notice.