The Difference of Dc Resistance Tester and Loop Resistance Tester

Many people are asking about the difference between DC resistance tester and loop resistance tester. GDZX has sorted out some materials. In this paper, we will explain the differences between them.

DC resistance tester is an instrument for measuring DC resistance of transformer winding and high-power inductive equipment. It can automatically select test current according to different types of power transformer and display test results at the fastest speed.

The DC resistance tester has the functions of storage, printing, discharge indication, etc. the built-in non power down memory can save the measurement data for a long time. The use of LCD makes the human-machine interface of the instrument good, and it is the preferred equipment in the DC resistance test. The test current is less than or equal to 1a, which is mainly used in the measurement of contact resistance, on resistance, connection resistance and other low resistance. The accuracy is very high, up to 0.01%. The measuring current is usually 1A, 3A, 5A, 10A, 20A, 30A and other different measuring gears. The instrument is composed of constant current power supply and voltage signal detection, with five digit LCD digital display. The output current is adjustable, which is suitable for the direct resistance measurement of various small and medium transformers.

Loop resistance tester is used to measure the loop resistance of high-voltage switch, on load switch and other switching equipment. It is designed by the combination of high-frequency switching power supply technology and digital circuit technology, which directly reflects the contact condition of switch contact.

The test current of ﹣ loop resistance tester adopts 100A DC recommended by national standard gb763. It can directly measure the loop resistance or contact resistance under 100A, 200A, 300A, 400A, 500A or 600A current, and display it directly, save it on the instrument, or upload the data to the computer for saving or printing. The instrument is accurate in measurement and stable in performance. It is suitable for the maintenance of high-voltage switch in power supply department and the test of loop resistance in high-voltage switch factory.