Power Network Application Trainer
– Earthing / Grounding network impedance measurement
87
4.1.1.2 Measurement with MI 3123 SmartTEC (Earth/Clamp) meter
Figure 62-2: Earth measurement with MI 3123
MI 3123 use 4 wire measurement method for the earth resistance measurement, so the
resistance of test cables is excluded from the measurement result.
Measurement is done at fix frequency 125 Hz.
Switch position Simulated condition
Application
Expected result
Regular measurement place
condition (simulated resistive earth
character), single and sweep
frequency measurement
Residential areas
Radio towers
Pylons without ground wire
connection
Solar power plants
Wind & water turbine
Re = 2.66
Ω @ 125 Hz
Table 16-2: Measurement setup/result for 4-wire measurement method with MI 3123
Measuring procedure:
1. Select proper switch position on the training module.
2. By using function selection keys (Left & Right) select
EARTH
measurement function
and with navigation buttons (Up & Down) select
EARTH RE
function.
Summary of Contents for MI 3298
Page 55: ...Power Network Application Trainer Earthing Grounding network impedance measurement 55 ...
Page 56: ...Power Network Application Trainer Earthing Grounding network impedance measurement 56 ...
Page 124: ...Power Network Application Trainer Earthing Grounding network impedance measurement 124 ...
Page 228: ...MI 3290 Earth Analyser 228 ...
Page 229: ...MI 3280 Digital Transformer Analyser 229 ...
Page 230: ...MI 3280 Digital Transformer Analyser 230 ...
Page 231: ...MI 3250 MicroOhm 10A 231 ...
Page 232: ...MI 3205 TeraOhmXA 5kV 232 ...