On-Load Tap Switch Tester|XHYZ1668
Introduction
The on-load tap changer is the only moving part connected to the transformer circuit, so its detection is increasingly important. According to the procedures for handover and preventive tests of electrical equipment, the action sequence and switching time of the on-load tap changer must be checked. The XHYZ1668 On-Load Tap Switch Tester measures the transition waveform, transition time, instantaneous transition resistance and three-phase synchronization. It is highly intelligent with intuitive on-screen prompts, compact, lightweight and strongly anti-interference, greatly reducing field workload, and is an ideal instrument for power generation and supply units and the transformer manufacturing industry.
Key Features
- Large output current with light weight.
- Tests YN, Y and delta transformers with resistance values displayed directly without conversion.
- Supports measurement both with and without winding.
- Waveform display automatically adjusts resistance and time amplitude based on sampling values.
- Complete protection circuit for strong reliability.
- 7-inch large LCD display for convenient field operation.
- Internal storage of 500 groups of data.
Technical Specifications
| Output current |
1.0A, 0.5A, 0.2A |
| Transition resistance range |
0.3Ω ~ 20Ω (1.0A)
5Ω ~ 40Ω (0.5A)
20Ω ~ 100Ω (0.2A) |
| Transition time |
0 ~ 320 ms |
| Open circuit voltage |
24 V |
| Measurement accuracy |
Transition resistance: ±(5% reading ±0.1Ω)
Transition time: ±(0.1% reading ±0.2 ms) |
| Sampling rate |
20 kHz |
| Storage |
Local storage (500 groups) |
| Dimensions |
Host: 360 × 290 × 170 mm
Cable box: 360 × 290 × 170 mm |
| Weight |
Host: 6.15 kg
Cable box: 4.55 kg |
| Ambient temperature |
-10ºC ~ 50ºC |
| Ambient humidity |
≤ 85% RH |
| Working power supply |
AC220V ±10% |
| Power frequency |
50 ±1 Hz |
Who Is It For
Built for routine and commissioning use in the field, the XHYZ1668 serves the maintenance and handover-testing teams that keep transformer fleets in service:
- Substation and power plant electrical maintenance departments performing routine preventive tests.
- Commissioning engineers conducting handover tests on newly installed transformers.
- Utility field service crews carrying out periodic on-load tap changer inspections.
- Electrical contractors and service providers managing transformer O&M programs.
Product Details
FAQ
1. Who should use this tap switch tester?
It is built for substation and power plant maintenance teams, commissioning engineers performing handover tests on newly installed transformers, and utility field service crews running routine preventive tests.
2. What does it verify during preventive and handover tests?
It measures the tap changer action sequence, switching time, transition waveform, transition resistance and three-phase synchronization, meeting preventive test procedure requirements.
3. Is it practical for routine on-site maintenance?
Yes. Its compact size, light weight, strong anti-interference and 7-inch LCD display make it convenient for field crews performing periodic on-load tap changer inspections.
4. Does it confirm three-phase synchronization?
Yes. It measures three-phase consistency so engineers can quickly verify that all three phases switch in sync and detect any timing deviation.
5. How does it support maintenance record-keeping?
It automatically stores 500 groups of data internally, supporting paperless records for maintenance archives and periodic comparison.
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