5.4.Test Menu Detail Description
5.4.1. Test mode: the instrument can select 7 test modes, which are "G.Grid ", "C.Spk",, "V.Spk",
"Stp.V", "G.Cont", "Soil R", "Tch.V", The function of "G. Grid", "C.Spk", "V.Spk" modes are to
measure the impedance of the grounding grid, the current spike and the voltage spike. In general
experiments, "G.Grid" mode should be selected to measure the impedance of large grounding grid.
However, the user requests to measure the impedance of current spike or voltage spike, can select
the corresponding mode and measure directly. The mode of "G.Cont" is to measure the conducting
between grounding devices.The mode of "Soil R" is to measure the ground resistance and soil
resistivity (the default line length is 20 meters, but the line length can also be modified). The "Stp.V"
"Tch. V"mode is to meausre the step voltage, touch voltage and other parameters.(Note: the "Stp.V"
"Tch.V"measuremnt mode required to matching with extra frequency selection voltmeter, or the
"Stp.V", "Tch.V"mode will not workable. )
5.4.2. Frequency selecttion: The instrument can choose two measurement frequencies, that is
"VF" and "FF". It must to select "VF" for the experiment on stie, so that the measurement can
eliminate electromagnetic interference in the field. "VF" adopts automatic double frequency
combination, such as 45Hz/55Hz dual-frequency, etc., provide multiple groups of frequency
conversion for optional use. While "FF" adopts single frequency measurement, such as 50Hz, etc.,
provide many single frequencies for selection.
5.4.3. Current selection: The instrument provides 5 current gears for the internal power:
1/2/3/4/5A, one gear for each 1A, 5 grades in total. According to the magnitude of the measured
impedance to select the test current. Generally, the smaller the impedance unit is, the larger the
current will be used, in general, the "G.Gird" mode select 1A gear; Press "InPWR" and "ExPWR"
key to switch use internal power or external power, external power can provide up to 50A power
supply.
5.4.4. Print: click the "Print" button.
5.5.Instrument Self-Inspection Description During Testing
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