Essence of Hohhot 100A DC Resistance Tester
Safety Measures
1. Read this manual carefully before using this instrument.
2. Avoid using the instrument in places with rain, corrosive gases, etc.
3. Avoid severe vibration of the instrument.
4. Maintenance and debugging of the instrument should be carried out by professionals.
5. After testing, be sure to wait until the discharge alarm sound stops before turning off the power and removing the test leads.
6. When measuring no-load tap-changing transformers, be sure to wait until the discharge indication alarm sound stops before switching gears.
7. During the test, it is forbidden to move the test clamps and turn off the power supply line.
Performance Features
1. The whole machine is controlled by a high-speed microcontroller, with a high degree of automation and simple operation.
2. Adopting high-frequency switching power supply technology, with large output current, suitable for DC resistance measurement of large and medium-sized transformers.
3. Complete protection functions, reliably protecting the instrument from the impact of back electromotive force, with more reliable performance.
4. Equipped with audible discharge alarm, clear discharge indication, reducing misoperation.
5. Fast response speed, can directly switch the on-load tap changer during measurement state, and the instrument automatically refreshes data.
6. Adopting vertical chassis structure, convenient for field use.
7. Intelligent power management technology, the instrument always works in the minimum power state, effectively reducing internal heating and saving energy.
8. Dot matrix LCD, Chinese menu, print output.
Essence of Hohhot 100A DC Resistance Tester
Technical Specifications
1. Output current: 5A, 10A, 20A, 40A, 100A
2. Range: 10μΩ～100mΩ (100A)
50μΩ～500mΩ (40A)
100μΩ～1Ω (20A)
500μΩ～2Ω (10A)
1mΩ ～ 4Ω (5A accuracy: 0.2%)
3. Resolution: 0.1μΩ
4. Operating temperature: 0～40℃
5. Ambient humidity: ≤90%RH, no condensation
6. Power supply: AC220V±10%, 50HZ±1HZ
