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Field test of zinc oxide arrester tester

time:2021/11/30   source:华天电力  reading:264 time

As a special instrument for professionally testing the electrical performance of zinc oxide arresters, zinc oxide arresters can be used for live or power outage detection of zinc oxide arresters of various voltage levels, so as to promptly discover defects such as moisture absorption and valve aging inside the equipment to avoid accidents. When using the zinc oxide arrester tester for on-site testing, you need to pay attention to the following items:


1. First, check that the performance of the zinc oxide arrester tester is normal after the equipment is turned on, there is no abnormal fault point, and the power is sufficient.


2. Check whether the surface of the equipment is dry and clean, and whether the power cord, connecting cable and grounding wire are in good condition.


Zinc Oxide Arrester Tester.png

3. After connecting the ground terminal of the equipment to the ground terminal of the high-voltage box, the ground wire from the ground terminal of the high-voltage box is firmly connected to the ground network, and the discharge wire is led out. At the same time, ensure that there is a sufficient safety distance between the measurement and control box and the high-voltage box. Then connect the measurement and control box and the high-voltage box with a connecting cable.


4. The lower end of the test product is connected to the "test product" end of the high-voltage box, and the upper end is connected to the high-voltage end of the high-voltage box.


5. The high-voltage lead must use a wire with an insulating sheath to reduce the corona current of the high-voltage lead to the ground, and at the same time, pay attention to the ground insulation.


6. After the test, you must reset the coarse adjustment button of the zinc oxide arrester tester to zero and turn off the high voltage. After the green light is on, hang the ground wire on the high voltage end, and finally release the high voltage end or replace the test product.


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