Product Introduction
Three-phase dc resistance test instrument is the latest generation product of transformer dc resistance measurement, and is designed to optimize the large-capacity transformerthree-phase dc resistance around the group. Transformer three-phase dc resistance around the group can be tested simultaneously. For transformer with load regulating voltage, discharge can be eliminated and straight pick up switch can be adopted. Measurement time is one third of that of traditional Single phasemeasurement standard, which can greatly reduce working time and labor intensity. The direct resistance meter adopts large screen liquid crystal display, with a clear and intuitive graphical interface in Chinese, and operation is very simple. Equipped with panel printer and large capacity non-volatile memory, measurement results can be easily stored and printed. Testdata is stable, fast and repeatable, making it a standard choice for dc resistance in scenemeasurement transformer.
Product functions
Three-circuit synchronous testing
Supports simultaneous measurement of three-phase windings, completing A, B, and C phase DC resistance tests with a single connection.
Test efficiency is approximately 2 to 3 times higher than traditional single-circuit equipment, especially suitable for large-capacity power transformers.
High-precision DC resistance measurement
Adopts constant-current source testing technology with stable output current.
Measurement accuracy is high, meeting the requirements for preventive and acceptance testing of power equipment.
Suitable for resistance measurement of high-voltage, low-voltage, and medium-voltage windings.
Automatic switching of multiple test current levels
Provides multiple test current levels.
Automatically recommends or switches test current based on the measured winding resistance, improving measurement speed and accuracy.
Parâmetros técnicos
| Item | Technical specifications and parameters | Remarks |
| Measure current | 1A, 5A, 10A, 20A | / |
| Measure Range | 1A：10mΩ~20Ω | / |
| 5A：1mΩ~4Ω | ||
| 10A：1mΩ~2Ω | ||
| 20A：1mΩ~1Ω | ||
| Precisão | ±0.2%（full range） | / |
| Data Storage | 255 | |
| Mostrar | LCD | Resistance display：4 1/2 bits |
| Maximum resolution | 0,1mΩ | / |
| Fonte de energia | AC 220V±22V，50Hz±2 Hz | Fuse 5A |
| Maximum Power Dissipation | 300W | Test current：10A/hour |
| Ambiente de trabalho | Temperature：0℃～40℃ | / |
| Relative Humidity：≤80%RH | ||
| Dimensão | 200╳400╳280 (mm) | / |
| Peso | 6kg | Including accessories |
características do produto
1. The three-phase DC resistance tester can simultaneously test the DC resistance of the three-phase windings of transformers, greatly reducing measurement time
2. Can quickly and accurately measure the DC resistance of transformer windings
3. Equipped with comprehensive protection functions
4. Compact in size and easy to carry
5. LCD full English menu, easy and intuitive operation
6. Fast testing speed, high accuracy, good data repeatability, and strong anti-interference ability
