Power transformer, generator, transformer, lightning arrester and so on high voltage electrical test equipment in the process of use for a long time, the need for insulation resistance testing on a regular basis, so you need to use insulation resistance tester, the equipment before use, need to do some preparation work and the basic operation of the insulation resistance tester test? This article will give you a brief introduction.

1. Before the test, the power supply and all external wires of the test equipment should be removed to make the test short circuit and discharge to the ground for 1 minute. If the capacitance is large, it should discharge for at least 2 minutes to avoid electric shock and affect the measurement results.

2. Clean the surface dirt of the tested object with a clean soft cloth. If necessary, clean the housing surface with gasoline to eliminate surface leakage current and affect test results.

3. The high voltage test strip is inserted into the line terminal of the red line (3), the green connector insertion end (2) and the plug end connected to the other end of the probe or fixture under the high voltage conductor device are tested. Subwire (green) of the test line to (2) GUARD end (right hand side), the other end of the cable ring device under test to eliminate the effect of leakage current on the surface (see "Shielding end Use" for additional black subwire the test line is inserted into the ground terminal (ground)

4. Before the test, the power supply and all external wires of the test equipment should be removed to make the test short circuit and discharge to the ground for 1 minute. If the capacitance is large, it should discharge for at least 2 minutes to avoid electric shock and affect the measurement results.

5, clean the test object with a clean, clean soft cloth dirt on the surface. If necessary, clean the shell surface with gasoline to eliminate the surface leakage current and affect the test results.

6. The high voltage test strip is inserted into the red line (3) line terminal, and the green connector insertion end (2) GUARD end and the other end of the probe or fixture are connected to the plug end of the high voltage conductor equipment under test. Subwire of the test line (green) to the (2) GUARD end (right hand side), the other end on the hV cable ring device to be measured, to eliminate the effect of leakage current on the surface (see "Shielding end Use" for additional black subwire test wire is inserted into the ground terminal (ground).

Power workers in the work, often need to use insulation resistance tester, the device is also a very conventional high voltage power test equipment, power workers in the use of the equipment before the preparation work to do, so as to get twice the result with half the effort.