On-load Tap Changer Tester Parameters
Darui Electric recommends:
The on-load tap changer tester is based on the "Power Equipment Handover and Preventive Test Procedures" and adopts testing principles. It uses microcomputer technology, and without disassembling the transformer or hoisting the tap changer, it can test the performance of on-load tap changers of various power transformers, display and print the waveform and parameters of the transition process. It is a power instrument. The tester is a comprehensive measuring instrument used to measure and analyze the electrical performance indicators of on-load tap changers in power transformers and special transformers in power systems. It is controlled by a computer and uses a specially designed measurement circuit to measure parameters such as transition time, transition waveform, transition resistance, and three-phase synchronization of the on-load tap changer. It can be measured directly from the tap changer leads or from the transformer three-phase bushings and neutral point wiring.
Technical Indicators
1. Three-phase constant current output is 1A each
2. Transition time measurement: accuracy 0.1ms
3. Transition resistance measurement: accuracy 0.1Ω±5%R
4. Transition resistance measurement range: ≤25Ω
5. Transition time measurement range: <120ms
6. Three-phase synchronization: accuracy 0.1ms
7. Display three-phase waveform: accuracy 0.3ms
8. Ambient temperature: -10℃～50℃
9. Working power supply: AC220V±10% 50HZ
10. Display mode: LCD320×240 large screen liquid crystal display
11. Instrument dimensions: 360mm×260mm×150mm
12. Weight: 4.5 kg
2. Large screen dot matrix liquid crystal display, hierarchical Chinese menu.
3. Intelligent testing and result analysis, can enlarge or shrink waveform test results.
4. Three independent voltage-stabilized sources are suitable for measurement without winding, and three independent constant current sources are suitable for measurement with or without winding.
5. Six independent signal processing, high-speed A/D conversion, 10KHz high-speed sampling, truly reflect parameter changes.
6. Built-in non-volatile memory can save three groups of waveforms and data, can be archived, viewed, and analyzed at any time.
7. The instrument comes with a perpetual calendar, displays date and time, and can automatically print.
2. When using the instrument, after connecting the power supply, turn it on and preheat for 3 minutes.
3. If the instrument malfunctions or starts abnormally, press the "Reset" key to terminate the test, and then test after checking and adjusting.
4. When the instrument is in testing state, do not turn off the power or disconnect the power supply line without resetting.
