What should be paid attention to when using the loop resistance tester?

1. The case must be grounded reliably during the test.

2. Irrelevant items are not allowed to be stacked on and around the equipment panel during the test.

3. The instrument must not measure the resistance of the inductive test sample;

4. Please check whether the output knob is at the zero position before starting up; please check the power supply voltage

5. During the test, please confirm that the device under test has been powered off and disconnected from other live devices.

6. When the resistance of the test product is too large and exceeds the measuring range of the instrument, it is normal that the μΩ meter displays "1";

7. The test product should be in good contact with the pliers. If necessary, remove the dirt and oxides on the test product, and pay attention to moisture and oil pollution.

8. After a long time of continuous measurement, the temperature rise inside the instrument will cause the automatic protection circuit to work, which is expressed as the ammeter shows zero, and the μΩ meter shows a random jump. As long as it is turned off or stopped for a period of time, it will automatically recover Measurement function.

9. Electrical equipment is divided into high voltage and low voltage

High voltage: the voltage of the equipment to ground is above 250V;

Low voltage: the voltage of the equipment to the ground is 250V and below;

10. If the current is less than 100A, check whether the power supply voltage is too low. The test clamp is in good contact with the sample.

11. In order to ensure the personal safety of the staff in the field test and the safe operation of the electrical equipment for power generation, supply and distribution of the power system.

12. The safe distance between staff and live high-voltage equipment