PRODUCT FEATURES
1. The tester supports three-phase measurement for Yn, Y, and △ winding transformers and automatically calculates the three-phase unbalance ratio.
2. High testing capability with a maximum output current of 50A and a measurement range of 0–25kΩ, covering most common transformer testing applications. It also integrates magnetic assist and demagnetization functions to meet diverse on-site requirements.
3. Data stability auxiliary judgment: the system automatically calculates resistance change rates within 5s, 15s, and 30s during testing, helping users avoid data misjudgment.
4. Comprehensive safety protections including 380V wrong-connection protection, back EMF protection, wire breakage protection, and power failure protection. It also features an ungrounded wire alarm for enhanced operational safety.
5. Flexible data storage and output: built-in thermal printer, supports storage of up to 200 test records, and allows large-capacity data storage via USB drive for easy archiving and review.
6. Superior human-machine interaction: equipped with a 7-inch industrial true-color touchscreen with a clean, intuitive interface. Supports full touch control and rotary mouse operation for convenient and comfortable use.
TECHNICAL PARAMETERS
| Item | Description |
| Test current output | Single-phase: 50A, 20A, 10A, 5A, 1A, 0.2A, 10mA, <1mA
Three-phase: 25A+25A, 10A+10A, 5A+5A, 1A+1A, 0.2A+0.2A |
| Resistance measurement range | Single-phase:
75μΩ ~ 0.4Ω @50A 0.5mΩ ~ 1Ω @20A 1.0mΩ ~ 2Ω @10A 10mΩ ~ 4Ω @5A 0.1Ω ~ 20Ω @1A 1.0Ω ~ 80Ω @0.2A 50Ω ~ 2kΩ @10mA 500Ω ~ 25kΩ @1mA Three-phase: 0.1mΩ ~ 0.25Ω @25A+25A 0.5mΩ ~ 0.6Ω @10A+10A 10mΩ ~ 1.5Ω @5A+5A 0.1Ω ~ 7.0Ω @1A+1A 1.0Ω ~ 30Ω @0.2A+0.2A |
| Accuracy | ±(0.2%rdg+2dgt) |
| Magnetic assisted | When the transformer adopts YN/y or YN/△ wiring, the low voltage side can use the magnetic assisted method for direct resistance measurement. |
| Demagnetization | Verify demagnetization. After demagnetization, the residual magnetization value of the transformer can be displayed |
| Display | 7.0-inch touch screen, resolution 1024×600 |
| Storage | Local storage of 200 pieces of data, supporting FAT or FAT32 format USB extended storage |
| Printing: | Equipped with a thermal printer, supporting on-site printing of test results |
| Protection functions: | 380V misconnection protection, back electromotive force protection, wire breakage protection, power-off protection, and alarm function for ungrounded grounding wire |
| Power supply | AC220V±10%, 50/60Hz |
| Operating conditions | Temperature -10 ~ 50℃; Relative humidity<90%, no condensation. |
