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Test skills of zinc oxide arrester tester

time:2021/10/28   source:华天电力  reading:741 time

The zinc oxide lightning arrester tester uses advanced microcomputer as the control element, and is intelligent in operation. It has the advantages of strong anti-interference ability, accurate and reliable measurement, powerful functions, and convenient operation. It is ideal for on-site and laboratory testing of the AC electrical parameters of zinc oxide lightning converters. Test Instruments. This machine adopts large-screen LCD display, all adopt Chinese character menu operation, easy to use: In order to ensure the reliability of data, various measurement methods can be used, such as pt quadratic method, laboratory method, online current method, and RS- 232 communication interface, data can be uploaded to the computer for processing.


Zinc Oxide Arrester Tester.png


1. PT secondary method detection:


If it is on-site, it can be electrified, and the voltage control signal can be obtained through the PT secondary side. Before turning on the instrument, connect the ground wire of the instrument to the site safety ground wire. The reference standard voltage data input and output signals are mainly taken from the secondary side of the PT box. If the lightning arrester under test is phase A, connect the "different reference voltage as input" terminal of these instruments to phase A, the red clip to the A end, and the black clip Connect to the neutral point (ground), and analogy with this method; the leakage current information input is taken from both ends of the arrester counter, the signal taken out is connected to the "leakage detection current calculation input" end of the instrument, the red clip is connected to the upper end of the counter, and the black clip is grounded.


2. Laboratory offline testing:


If it is an offline laboratory test. Before starting up, first connect the ground terminal of the instrument to the laboratory ground wire, and connect the “reference voltage input” of the instrument to the output terminal of the transformer control box through the voltage test wire; The “leakage current input” red clip and the “leakage current input” black clip are connected to the high-voltage tail (ground).


The zinc oxide arrester tester is a high-voltage power test equipment that electric power workers often need to use in actual work. When you use it, you need to choose the appropriate test method according to the voltage level of the zinc oxide arrester, so that you can do it well. Experiment and get twice the result with half the effort.


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