The following table lists the Resistances tests:
No.
Test
Test description
1
Resistance -
μΩ
The contact resistance test is performed using the high DC current output. The test set
measures the contact resistance down to the µΩ range.
With the same selection, and different generators, it is also possible to measure higher
resistances.
Input parameters are: current output range, test current, and resistance limits. The display
shows the following:
•
DC current
•
DC voltage
•
Resistance
2
Earth
Resistance
For the resistivity test, input parameters are the following:
•
Voltage range
•
Test voltage
•
Test frequency
The measurements are narrow filtered in order to reduce the noise, coming from the
environment.
Input parameters are the following:
•
Output voltage range
•
Test voltage
•
Test frequency
The display shows the following:
•
Test probe distance
•
Output voltage
•
Test probe voltage
•
Output current
•
Phase shift
•
Earth resistance
•
Evaluation
Ground Resistance Values : from 0.05 Ω to 300 Ω
The test of ground grid resistance is performed applying current between the ground grid and
the auxiliary ground spikes. With the STLG option the test is performed using an overhead line
to connect to the remote ground
3
Soil
Resistivity
The test of soil resistivity is performed applying AC voltage to two spikes, and measuring the
injected current, and the voltage across the voltage spikes.
The display shows the following:
•
Location
•
Probes distance
•
Output voltage
•
Voltage between probes
•
Output current
•
Corresponding resistivity
•
Evaluation
Table 51 - Resistances tests (1/2)
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