Circuit breaker loop resistance tester uses pictures and principle

October 03 13:01:41, 2024

FR series circuit breaker circuit resistance tester, also known as loop resistance tester, referred to as the loop; has a small size, light weight, easy to carry. It is a high-current digital micro-European industrial instrument developed and produced independently by our company. Its product design is novel and it is suitable for various indoor and outdoor test occasions.

Features
1, with anti-power frequency interference function.
2. The test current is automatically stable without manual adjustment.
3, automatic constant current, effectively reducing the impact of AC power fluctuations on the test.
4, the use of potentiometer measurement principle, data synchronization and high-speed sampling, completely eliminating the test current fluctuations on the accuracy of the instrument.
5, using four-terminal wiring method, effectively ruled out the test line resistance, contact resistance on the test results.
6, the operation is simple, just press the test button, you can get the measured loop resistance and test current value.
7. The loop resistance value is automatically latched for easy viewing.
8, small size, light weight, easy to carry.
9, equipped with soft test lines and special clips.
working principle
The use of potentiometer measurement principle, and data synchronization high-speed sampling technology, when the DC current through the measured resistance Rx, the resulting voltage drop Vrx, standard resistance RN, voltage drop Vrr.
From Ohm's law: Vrx/Rx=Vrr/Rr will get the measured resistance: Rx=Vrx/Vrr.
Dear Customer:
Thank you for your attention to our products. In addition to this product introduction, the company also has a solar junction box tester, insulation resistance tester, power parameter tester, transformer DC resistance tester, capacitance and inductance tester, wireless high-voltage nuclear phase. Instrument, electrical test equipment and other products, if you are interested in our products, welcome to inquire. Thank you!

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