eSpace IAD
Troubleshooting
3 Common Troubleshooting Methods
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
The ground electrode to be tested cannot be surrounded by scattered current or polarized
soil.
Do not test the ground impedance when the soil humidity is too high (for example, after
rain) or the temperature, pressure, and climate changes greatly.
The probe must be far away from the big metal entities, such as pipes, cables, and
railways. The current probe must be 10 m away from the metal entities and the potential
probe must be 50 m away. If a metal entity does not connect to the ground system, the
distance can be shortened by 1/2 to 1/3.
The conductor must be well insulated.
Select a proper position for the current probe and ensure that the potential of the ground
electrode is 0 after the current probe is inserted to the soil.
Test the impedance when the soil impedance ratio is high, such as in earlier winter.
No electrolyte is allowed around the test area.
If the tester is highly sensitive, plug the potential probe shallower; if the tester is not
sensitive, moisten the probe.
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