Transformer DC resistance is a must-test item in transformer manufacturing for semi-finished products, finished products factory test, installation, overhaul, after changing the tap changer, handover test and preventive test of the power department. You can check the welding quality of the winding joints and whether the windings have short-circuits between turns, and you can check whether the various positions of the voltage regulating tap switch are in good contact, whether the lead wires are broken, and whether there are broken strands in the multi-stranded wire. The instrument adopts a brand-new power supply technology, which has the characteristics of small size, light weight, large output current, good repeatability, strong anti-interference ability, and perfect protection functions. The whole machine is controlled by a high-speed single-chip microcomputer, with a high degree of automation, with automatic discharge and discharge alarm functions. The instrument has high test accuracy and simple operation, which can realize the rapid measurement of transformer direct resistance.
Technical index
1. Output current: automatic, 10A, 5A, 1A, 200mA, 40mA, <5mA
2. Resolution: 0.1μΩ
3. Range: 100Ω-100KΩ (<5mA gear)
1Ω-500Ω (40mA gear)
100mΩ-100Ω (200mA gear)
5mΩ-20Ω (1A range)
1mΩ-4Ω (5A range)
0.5mΩ-1.5Ω (10A range)
0.5mΩ-100KΩ (automatic gear)
4. Accuracy: 0.2%
5. Working temperature: -10～40℃
6. Working humidity: <80%RH, no condensation
Features
1. The whole machine is controlled by a high-speed single-chip microcomputer, with a high degree of automation and easy operation.
2. Adopt brand-new power supply technology, multiple current gears, wide measurement range, and can automatically select the test current according to the load.
3. Perfect protection function and more reliable performance.
4. With discharge sound alarm, clear discharge instructions, reduce misoperation
5. The response speed is fast, the measurement data is stable, and the data is automatically refreshed during the test.
6. Intelligent power management technology can effectively reduce the internal heating of the instrument and save energy.
7. The non-power-off clock and non-power-off memory can store data permanently.
8. Thermal printer, high speed and silent.
Mobile version
15388193573
