According to the People's Republic of China electric power execution standard DL/T845.4-2004, it is designed by combining high-frequency switching power supply technology and digital circuit technology. It is suitable for measuring the loop resistance of switch control equipment. Its test current adopts DC 100A recommended by national standards. The loop resistance can be directly measured under the current of 100A and displayed digitally. This instrument has accurate measurement and stable performance, meeting the requirements of on-site high-voltage switch maintenance in power and power supply departments and loop resistance testing in high-voltage switch factories.
1. LCD display, high-speed thermal printer.
2. This instrument has the characteristics of small size, light weight, strong anti-interference ability, high accuracy, convenient operation, and complete protection functions.
3. Human-machine dialogue full keyboard operation mode, intelligent working process.
4. It uses precision instrumentation operational amplifiers and high-precision quadruple integral A/D converter, combined with high-performance 16-bit microcontroller. During measurement, the system automatically switches the amplification factor according to the signal size, ensuring the test accuracy of this product.
5. This product also designs a real-time calendar clock, providing time basis for printing and saving data.
6. Data storage and historical data browsing function, can store a large amount of data, and has power-off protection function.
Panel Structure
|
1. Current display (A) |
2. Resistance display (μΩ) |
3. Power switch |
|
4. Measurement switch |
5. Current adjustment |
6. Power socket |
|
7. Current output I+ |
8. Current output I- |
9. Measurement input V+ |
|
10. Measurement input V- |
11. Ground |
|
1. Measurement range: 0~4mΩ (50A gear) 0~2mΩ (100A gear) 0~1.33mΩ (150A gear) 0~1mΩ (200A gear)
2. Test current: DC50A, 100A, 150A, 200A fixed output
3. Measurement accuracy: ±(0.5% rd+2d)
4. Continuous working time: 5s~599s
5. Display mode: large screen Chinese LCD display
6. Communication method: RS232 serial port
7. Working power supply: AC220V±10% 50Hz
8. Total power: 1200W
