GDDW-III Ground Network Grounding Resistance Tester

Sept. 6, 2011 - PRLog -- Now in the power system, the most popular measurement for grounding resistance of large ground Grids is “Three Pole” method using 50Hz power-frequency large current. In order to avoid interferences from 50Hz power-frequency in power grid operating and improve veracity of measuring, the insulating precaution test regulation stipulates that test current of 50Hz power-frequency large current measurement must be less than 30A. As a result of the regulation, there have some problems such as the heavy test device, large labor, and long test time.

DWR-IV survey meter for grounding resistance of large ground grids is an all-purpose tester with electrical source of non-power frequency, the tester can measure the grounding resistance of substation (4Ω), thermal power plant\hydropower plant, microwave station (10Ω), lighting rod etc. Microcomputer is adopted to control DWR-IV survey meter and process testing datum, which eliminates interferences from the testing process, simplifies operation programs of testing, enhances precision and veracity of measuring, and reduces the cost of labor and test.

Technical Index of DWR-IV Survey Meter
Measurement Range of DWR-IV Tester:  0~40Ω
Precision of DWR-IV Tester: 3%
Output Current: AC

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Chongqing Gold Mechanical & Electrical Equipment Co.,Ltd is a high-tech enterprise for researching, designing, developing and producing oil treatment equipment.