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MI 3100 s, MI 3100 SE EurotestEASI Measurements
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5.7 Earth resistance
Earth resistance is one of the most important parameters for protection against electric shock.
Main earthing arrangements, lightning systems, local earthings, soil resistivity etc can be
verified with the earthing resistance test. The measurement conforms to the EN 61557-5
standard.
The Earth resistance main function is 3-wire earth resistance test method for standard earth
resistance tests with two earthing rods.
See chapter 4.2 Function selection for instructions on key
functionality.
Figure 5.32: Earth resistance
Test parameters for earth resistance measurement
Test Test configuration [EARTH RE]
Limit Maximum resistance [OFF, 1 ÷ 5 k]
Earth resistance measurements procedure
Select EARTH function using the function selector switch.
Enable and set limit value (optional).
Connect test leads to the instrument.
Connect the item to be tested (see Figure 5.33 and Figure 5.34).
Press the TEST key to perform the measurement.
Store the result by pressing the MEM key (MI 3100 SE only).
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