This circuit resistance tester is a high-precision, digital switch detection instrument carefully developed by the company based on IEC standards and the relevant provisions of the People's Republic of China power implementation standard DL/T845.4-2004, leveraging its own technical advantages. This instrument adopts high-frequency high-power constant current switching power supply technology, which can measure micro ohm level contact resistance. Widely applicable for measuring contact resistance, circuit resistance, cable and wire contact resistance, and weld contact resistance of various switches and electrical appliances. The instrument measurement data is accurate and the performance is stable, meeting the requirements of on-site high-voltage switch maintenance and high-voltage switch factory circuit resistance testing in power and supply departments. The output current and measured resistance are simultaneously output on a 65K true color LCD, and the measurement results can be either voltage output or stored on a USB flash drive. The power-off storage can meet the requirements of counting at any time. This circuit resistance tester is a high-precision, digital switch detection instrument developed by the company based on IEC standards and relevant regulations of the People's Republic of China's power execution standard DL/T845.4-2004, leveraging its own technical advantages. This instrument adopts high-frequency high-power constant current switching power supply technology, which can measure micro ohm level contact resistance. Widely applicable for measuring contact resistance, circuit resistance, cable and wire contact resistance, and weld contact resistance of various switches and electrical appliances. The instrument measurement data is accurate and the performance is stable, meeting the requirements of on-site high-voltage switch maintenance and high-voltage switch factory circuit resistance testing in power and supply departments. The output current and measurement resistance are simultaneously output on a 65K true color LCD, and the measurement results can be either voltage output or stored on a USB flash drive. Power off storage can meet data queries at any time. According to the inquiry.

1. The test current is high and fully meets the standard requirements for testing contact resistance

2. High output voltage, wide measurement range

3. The test current comes from a high-precision high current constant current power supply, without the need for manual adjustment, and the test is fast and accurate

4. The use of four terminal wiring method effectively eliminates the influence of test line resistance on test results

5. 65K true color LCD with 320X240 dot matrix small pixels

6. The instrument comes with a perpetual calendar clock and power down storage, which can automatically store 1000 sets of test data for easy access at any time

7. The instrument is equipped with a micro printer, RS232 and USB interfaces, which can communicate with a computer and store data on a USB drive

8. Intelligent power management technology ensures that instruments always operate at lower power levels, effectively saving energy

Test current: 100A, 200A, 300A

Range: 0-50m Ω (100A) 0-20m Ω (200A) 0-5m Ω (300A)

Resolution: 0.1 μ Ω smaller

Accuracy: ± (0.5% ± 2 words)

Power: 1000W

Working mode: Continuous measurement

Working power supply: AC220V ± 10% 50HZ

Operating temperature: 0-40 ℃

Relative humidity: less than or equal to 90% without condensation

Dimensions: Host: 350 * 205 * 295 (mm) Wire box 370 * 270 * 180 (mm)

Weight: Host 9.3KG Wire box 9.8KG

Test line length: Standard 10 meter length can be customized