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How to measure the transformer grounding resistance? [ES3001

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The Essence ES3001 multi-function four-wire grounding resistance tester has: 2, 3, 4 wire grounding resistance, soil resistivity, grounding voltage measurement. USB interface, data upload function, alarm function, data storage 300 groups, grounding resistance range: 0.00Ω~30.00KΩ, soil resistivity range: 0.00ΩM~9999KΩM Voltage range: 0~100V, test frequency: 128Hz, etc. The following is an example of measuring the grounding resistance of a transformer.
Transformer to be measured

Open the ES3001 multi-function four-wire grounding resistance tester instrument box and tool bag ready for wiring

Wire as shown below. Red, yellow, green and black, respectively, differ by 5 meters. This is a four-wire method to measure the grounding resistance.

Ground the rod and clamp the red and yellow test leads to the ground rod.

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Clamp the green and black test leads on the transformer ground lead

Wiring completed, ready to test

Press the red POWER button to boot

Press R to switch the ground resistance gear

Press the yellow TEST button to start the test.

Test 10 seconds countdown

The grounding resistance is measured to be 3.17Ω, and the grounding is normal.

After the test is completed, press the red POWER button to shut down

The above is the case of the ES3001 digital grounding resistance meter (multi-function type) to detect the transformer grounding resistance.

If need to purchase or learn more about the parameters of this instrument, please call: 020-37319325, mobile phone: 18818841403, QQ: 3046427731

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