Product name: HCYZ-Ⅳ Transformer On-load Tap Changer Parameter Tester
Category: Transformer Comprehensive Test Series
Detailed introduction
The on-load tap changer is the only moving part connected to the transformer circuit, so the detection of the on-load tap changer has attracted more and more attention. In the “Electric Power Equipment Handover and Preventive Test Regulations”, it is required to check the action sequence of the on-load tap changer and measure the switching time. The instrument is mainly used to measure the transition waveform, transition time, each instantaneous transition resistance value, three-phase synchronization, etc. of the transformer on-load tap changer.
Functional features
※ The instrument has a large output current and light weight;
※ Two-speed current output, wider test range, higher stability;
※ Can automatically calculate the transition resistance value and transition time value;
※ It has a complete protection circuit and strong reliability;
※ 5.7-inch large LCD display, which is convenient for on-site operation;
※ It has a U disk storage function and can store more data waveforms.
※ The keyboard and one-key shuttle are operated independently, making the instrument more operable and convenient
| Technical Parameters | |
| Output Current | 1.0A、0.5A |
| Measuring range | Transition resistance: 0.5Ω~20Ω(1.0A), 0.5Ω~40Ω(0.5A) |
| Transition time: 0~250ms | |
| Measurement accuracy | Transition resistance: ±(5% reading + 3 digits) |
| Transition time: ±(0.1% reading + 3 digits) | |
| Storage method | U disk storage, local storage |
| Overall dimensions | 385mm×275mm×230mm |
| Instrument weight | 9kg |
| Conditions of Use | |
| Ambient temperature | -10℃~50℃ |
| Ambient humidity | ≤85%RH |
| Working power supply | AC220V±10% |
| Power supply frequency | 50±1Hz |


