HOW TO USE ZINC OXIDE ARRESTER TESTER?

In the long-term use of zinc oxide arresters, insulation aging often occurs. It may look normal on the outside, but the interior is not suitable for continuing to work. Therefore, it is necessary to check the insulation performance of zinc oxide arresters in time. Zinc oxide arrester tester is used, so how to use zinc oxide arrester tester?

Zinc oxide arrester field tester is a special instrument for testing the electrical properties of zinc oxide arresters. It is suitable for live or power failure detection of zinc oxide arresters of various voltage levels, and timely detection of dangerous defects such as moisture in the internal insulation of the equipment and aging of valve plates.

The equipment is simple and easy to use, and the whole process of measurement is controlled by the IPC, the total current measured, resistive current and its harmonics MOA, frequency reference voltage and its harmonics, active power and phase, the actual voltage and current waveform. The instrument uses digital waveform analysis, harmonic analysis and accurate results, stable digital filtering method of software interference, and accurate analysis of 3 to 7 times the fundamental harmonic content, and overcomes the interference phase, the correct phase of the resistance current Measure along the arrester.

In the case of a power failure of the transformer, please connect the reliable ground wire of the instrument and the test transformer first, then connect the current test wire (the yellow, green and yellow wires of the three core wires are respectively connected to the lower ends of the three zinc oxide arresters), and finally connect the resistance Voltage test wire (the yellow, green and red wires of the four core wires are respectively connected to one end of the transformer measuring winding, and the black wire is connected to the other end of the transformer measuring winding, pay attention to the direction, if the directions cannot be aligned).

Combined with the current test line, firstly, according to the magnitude of the current, the current test line is to the upper range of the host “0-2mA” or “>2mA” (2-10mA >2mA standard curve), and then the said At the other end of the method, the oxide MOA is reduced. The method of connecting the voltage test line is to connect the meter first, and then connect the transformer test winding. After checking the correct wiring, slowly increase the voltage to the working voltage of the zinc oxide arrester, and then operate the instrument to start the test.