According to the requirements of the preventive test procedure for power equipment "DL/T 596 — 1996", the test current for the conductive loop resistance test of various switchgear shall not be less than 100A. Due to reasons such as oxidation of contact surfaces and poor contact tightening, the contact resistance increases. When a large current flows through, the temperature at the contact point rises, which accelerates the oxidation of the contact surface, further increasing the contact resistance. If this continues, serious accidents may occur. Therefore, it is necessary to measure the contact resistance frequently or regularly.

The loop resistance tester is also called a contact resistance tester, with the English name: Loop Resistance Tester. Detailed introduction: According to the requirements of the new "Power Equipment Handover and Preventive Test Procedure", the test current for measuring the conductive loop resistance of various switchgear shall not be less than 100A.

The loop resistance tester is also called a contact resistance tester, with the English name: Loop Resistance Tester. Detailed introduction: According to the requirements of the new "Power Equipment Handover and Preventive Test Procedure", the test current for measuring the conductive loop resistance of various switchgear shall not be less than 100A.

Loop resistance tester: Purpose and application scope of ground resistance meter: The ground resistance meter is suitable for directly measuring the ground resistance value of various grounding devices, and can also be used for general low resistance measurement. The four-terminal type (0～1～10～100Ω specification) can also measure soil resistivity. Loop resistance tester: Single-clamp loop resistance tester

Performance and features of the single-clamp loop ground resistance tester: Unique single-clamp design avoids the error caused by mutual interference between the two probes of the double-clamp type. No auxiliary ground rod is needed; just clamp it directly to measure.

Loop resistance tester: Universal ground/insulation resistance tester

There are many testing methods: double-clamp ground resistance test, four-pole ground resistance test, soil resistivity test, insulation resistance test, AC/DC resistance tester voltage test, and current RMS test.

Loop resistance tester: Ground impedance tester

When measuring with the clamp-type ground resistance meter series, it is not necessary to use an auxiliary ground rod, nor is it necessary to interrupt the grounding of the equipment under test. Just clamp the ground wire or rod to measure the ground resistance down to 0.1Ω. It can also perform current measurement.

Loop resistance tester: Loop resistance tester

Microprocessor-controlled, with high precision and high reliability. Three indicator lights check whether the wiring status is correct. Directly reads short-circuit protection current and ground fault current. Automatically locks when the test resistor overheats.

Loop resistance tester: Digital ground resistance tester

This tester is specially used to measure the ground resistance value of various electrical equipment, lightning rods, and other grounding devices. The product is an all-electronic meter, and the key circuits are assembled from integrated circuits produced by Texas Instruments in the United States. The testing principle is advanced.

Loop resistance tester: Double-clamp ground resistance tester

It has multiple ground resistance measurement methods: no auxiliary electrode / three-pole / four-pole / two-pole method - suitable for various measurement environments, with a wide measurement range: 0.002Ω—300KΩ - meeting various requirements.

Loop resistance tester: Ground resistance tester