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Leon Zhang sales consultant
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Email: zxl635973785@gmail.com
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Phone/WhatsApp/Wechat: +86 13655813266
HF-TC-604 Transformer Load Tap Changer Analyzer
This Transformer Load Tap Changer Analyzer features a 7-inch bilingual touch screen and multiple optional output currents. It automatically records transition waveform, resistance, switching time and three-phase synchronism. It supports tests with or without transformer windings, saves data locally, and enables remote control and data upload via mobile APP for efficient on-site transformer maintenance.
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Product Introduction
The on-load tap changer is the only moving component connected to the transformer circuit, so its detection has drawn increasing attention. The Code for Handover and Preventive Test of Electric Power Equipment specifies inspection of the operation sequence and switching time of on-load tap changers, which can be accurately completed by the Transformer Load Tap Changer Analyzer.
This instrument is specially designed to measure the transition waveform, transition time, instantaneous transition resistance and three-phase synchronism of transformer on-load tap changers.
Featuring high intelligence with full Chinese menu prompts for easy operation, the tester boasts compact size, light weight and strong anti-interference capability. It effectively reduces the workload of field technicians, serving as an ideal testing device for power generation & supply enterprises and transformer manufacturers to ensure safe production and improve product quality.
Features & Main Functions
- Large output current and lightweight design
- Direct resistance display without conversion for Yn, Y and Delta (D) type transformers
- Supports measurement with or without transformer windings connected
- The waveform display automatically adjusts amplitude of resistance and time values based on sampled data
- Equipped with comprehensive protection circuits for high operational reliability
- 7-inch high-brightness touch color LCD screen with clear display under strong sunlight; full touchscreen operation with free switching between Chinese and English languages
- Built-in large-capacity lithium battery for offline power supply (optional accessory)
- Local automatic storage for up to 500 groups of test data
- Remotely control the whole testing process via dedicated APP on Android smartphones or tablets (downloadable by following the official WeChat Official Account); test data can be stored and uploaded for convenient review
Technical Specifications
| Item | Parameters |
|---|---|
| Output Current | 3.0A / 1.0A / 0.5A / 0.1A |
| Transition Resistance Measurement Range | 3.0A: 0.1Ω～4Ω1.0A: 1Ω～20Ω0.5A: 5Ω～40Ω0.1A: 20Ω～200Ω |
| Transition Time Measurement Range | 0～320ms |
| Open-circuit Voltage | 24V |
| Measurement AccuracyTransition ResistanceTransition Time | ±(5% of reading ±0.1Ω)±(0.1% of reading ±0.2ms) |
| Sampling Rate | 20kHz |
| Data Storage | Onboard local storage |
| Overall Dimension | Main Unit: 360×290×170 mmCable Case: 360×290×170 mm |
| Instrument Weight | Main Unit: 6 kgCable Case: 4.5 kg |
| Standard Test Cable Length | 13 meters; customized length available upon request |
Simple Operation Steps
1. Power on the Transformer Load Tap Changer Analyzer and select English/Chinese language on the 7-inch touch screen.
2. Firmly ground the instrument and connect the A/B/C test cables to the transformer tap changer terminals. It supports testing with or without transformer windings, and adapts Yn, Y and D transformers without resistance conversion.
3. Select the appropriate output current (3.0A/1.0A/0.5A/0.1A) according to the actual resistance range.
4. Start the test, manually switch the transformer tap gear, and the instrument will automatically collect transition waveform, transition time, transient resistance and three-phase synchronism data.
5. The system automatically adjusts waveform amplitude, saves test data locally, and supports remote control and data upload via mobile APP.
6. After testing, check and save the results, then remove the test cables safely.
Why Choose Our Transformer Load Tap Changer Analyzer
Our analyzer is fully compatible with Yn, Y and D connection type transformers, supporting tests with or without transformer windings without extra resistance conversion, which fits most on-site maintenance work in substations and power plants.
Equipped with a 7-inch touch screen with Chinese & English bilingual switching, it provides optional output current from 0.1A to 3.0A to meet various resistance measurement ranges. The device automatically captures transition waveform, transition time, transient resistance and three-phase synchronism data.
It auto-adjusts waveform amplitude, stores test records locally, and enables remote control & data upload via mobile APP to greatly improve field testing efficiency. Featuring strong anti-interference performance, simple wiring and user-friendly operation, this tester delivers stable and accurate test results in strict accordance with international power test standards.
With solid build quality and comprehensive after-sales technical service, it serves as an ideal tool for transformer preventive maintenance and OLTC fault diagnosis.
FAQ
Q1: Can the device switch between English and Chinese interfaces?
A1: Yes. After powering on, you can directly pick Chinese or English on the 7-inch touch screen to switch the operating language.
Q2: Is professional training required before operation?
A2: Basic operation is intuitive with on-screen prompts. Technicians familiar with transformer testing can operate it quickly following the steps. We also provide operation manuals and remote technical guidance.
Q3: Does the tester work with transformers with windings connected or disconnected?
A3: It supports two test modes: testing with transformer windings connected and testing after disconnecting windings. No resistance conversion calculation is required manually.
Q4: Which transformer connection groups are supported?
A4: Fully applicable to Yn, Y and D wiring transformers, covering most conventional distribution and power transformers.
Q5: Do I have to ground the instrument during testing?
A5: Mandatory. Firm grounding protects equipment and operators from electric shock and reduces external signal interference to ensure accurate waveforms.
Q6: How to choose the proper output test current?
A6: Four current options are available: 3.0A / 1.0A / 0.5A / 0.1A. Select higher current for large resistance ranges and lower current for tiny resistance values to avoid overload and guarantee measurement precision.
Q7: What happens if I pick an unsuitable current gear?
A7: It may lead to distorted transition waveforms, unstable resistance readings or trigger overcurrent protection of the device. Please reselect the matched current range and restart the test.
Q8: Will the instrument record key parameters automatically during tap shifting?
A8: Yes. Once the test starts, manually toggle tap positions, and the unit automatically records transition waveform, transition time, transient resistance and three-phase synchronism data without manual note-taking.
Q9: Does the system need manual adjustment for waveform display?
A9: No. The system intelligently adjusts waveform amplitude automatically for clear viewing; manual fine-tuning is also available if needed.
Q10: Where are test results saved? Can data be exported?
A10: All test files are stored locally on the device. You can view, check and save reports on the touch screen, and export data via USB or upload to mobile phones through the supporting APP.
Q11: What functions does the mobile APP support?
A11: The APP realizes remote control of the tester, real-time data viewing and one-click cloud upload of test records for convenient file archiving and report arrangement.
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