Loop Resistance Tester Circuit Resistance Tester

• The Contact Resistance Meter adopts high frequency and high power constant current switching power supply technology, which can measure micro ohm contact resistance. It is widely used to measure the contact resistance, loop resistance of various switches and electrical appliances, and the contact resistance of cables, wires and welds. 

• The Contact resistance tester has accurate measurement data and stable performance, meeting the requirements of on-site high-voltage switch maintenance of electric power and power supply departments and loop resistance test of high-voltage switch factory.

• The Contact resistance tester has multiple protection functions such as back EMF impact, disconnection and power-off during the test, overheat of power supply and so on.

• It can reliably protect the impact of back EMF on the instrument, and give an alarm simultaneously.

• Intelligent power management technology, the instrument always works in the minimum power state, which can effectively save energy and reduce heating.

• High output voltage and wide measuring range.

• The test current comes from the high-precision high current constant current power supply, which needs no manual adjustment, so the test is fast and accurate.

• Using four terminal connection method, the influence of test line resistance on test results is eliminated effectively.

• Seven-inch-high brightness touch color LCD, clear display under strong light, full touch screen operation.

• The contact resistance test sets has its own calendar clock and power-off storage, which can store 1000 groups of test data for reference at any time.

• The loop resistance tester has Bluetooth communication, RS232 communication and USB interface for computer communication and USB data storage.

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1.      Test current: 50A, 100A

2.      Range: 0～100mΩ（50A）    0～50mΩ（100A）

3.      Resolution: minimum 0.1µΩ

4.      Accuracy: ±（0.5%±2 digits）

5.      Power: 1000W

6.      Working mode: continuous measurement

7.      Working power supply: AC220V±10% 50HZ

8.      Service temperature: 0～40℃

9.      Relative humidity: < 90%, no condensation