Measuring method: The ground grid grounding resistance tester can choose five measurement methods, namely "ground grid", "current pile", "voltage pile" and "grounding". The first three are used to measure the impedance of the ground grid, the impedance of the current pile and the impedance of the voltage pile. In general, when doing experiments, "ground grid" should be selected to measure the impedance of the ground grid. When the user requires to measure the impedance of the current pile or the voltage pile, you can choose to measure directly. The function of "grounding" is to measure the grounding resistance and soil resistivity. The default line length is 20 meters. The line length can also be modified.

 Frequency selection: The ground grid grounding resistance tester can choose two measurement frequencies, namely "variable frequency" and "fixed frequency". When doing experiments on site, you must choose "variable frequency" to do the experiment, so that the measurement can eliminate the electromagnetic field interference on site. The "fixed frequency" method can only be used when doing experiments in the laboratory. When the cursor is on "variable frequency", press and hold the "OK" key for 3 seconds to enter the frequency switching interface, and use the up and down keys to change the measurement frequency. 4-Hz means that the frequency output by the instrument during measurement is 47.5/52.5Hz, 5-Hz means that the frequency output by the instrument during measurement is 45/55Hz, and 6-Hz means that the frequency output by the instrument during measurement is 55/65Hz. When the cursor is on "fixed frequency", press and hold the "OK" key for 3 seconds to enter the frequency switching interface, and use the up and down keys to change the measurement frequency, 45, 50, 55, 60, 65Hz single frequency. "Fixed frequency" uses strict 50Hz for measurement. After selecting the appropriate frequency, press the "OK" key to exit.

Current selection: The ground grid ground resistance tester provides 5 types of measurement currents. That is, "1A", "2A", "3A", "4A", and "5A". Select the test current according to the size of the current pile impedance. In general, 2A current is sufficient.

 Automatic printing: When the cursor is on the current, press the "Confirm" key, and the small printer symbol will appear or disappear in the lower left corner of the screen, indicating the selection or cancellation of the automatic printing function. When automatic printing is selected, the test is completed and the instrument automatically prints the results. When automatic printing is canceled, if you want to print the results, you need to print the results manually.

 Manual printing: After the ground grid ground resistance tester is tested, the interface shown in Figure 7 appears. The button can be selected between "Print" and "Exit". If "Print" is selected, press the "Confirm" key to print the results. If "Exit" is selected, press the "Down" key to store the test results, but be sure to enter the corresponding number (three-digit display) Press the "Confirm" key to return to the initial interface as shown in Figure 3. When the cursor is on "Start", press "Down" to view the stored test results.

 Precautions for test measurement of ground grid ground resistance tester

 1. In order to make the test go smoothly, please use a multimeter to check whether the contact point between the test lead and the ground pile is intact before the test, and measure whether the laid wire has a circuit breaker.

 2. The instrument will automatically eliminate wiring errors when measuring with the four-pole method.

 3. When the cursor is on the current, press the "Confirm" button, and a small printer symbol will appear or disappear in the lower left corner of the screen, indicating the selection or cancellation of the automatic printing function.

 4. If this instrument has other faults, please contact our after-sales service department directly, and do not disassemble and inspect it privately.

Contact email: contact@demikspower.com Contact phone: +86-1990-161-4261

 Shanghai Demiks Power Technology Co., Ltd. mainly produces products such as: "Series resonance test equipment, partial discharge test system, high-voltage insulation withstand voltage, transformer test, circuit breaker test, relay protection, secondary circuit test, cable line test, lightning arrester insulator tester, SF6 test, oil test, DC system battery test, reactive compensation generator detection, ground insulation resistance test, power metering test, etc." Twenty categories totaling more than 200 products".

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