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. The instrument should avoid severe vibration.
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 easy operation.
2. It adopts 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 can reliably protect the instrument from the impact of back electromotive force, making the performance more reliable.
4. It has audible discharge alarm, clear discharge indication, reducing misoperation.
5. Fast response speed, can directly switch on-load tap changers in the measurement state, and the instrument automatically refreshes data.
6. It adopts a 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
