Power Network Application Trainer
– Earthing / Grounding network impedance measurement
93
Measurement at fixed frequency 329 Hz:
Expected result for
single
frequency measurement:
Since there is additional inductive part added to the earth resistance, earth impedance
is higher than the result measured in exercise Nm.1, item 4.1.1.1.2.
Measuring procedure
– sweep frequency measurement:
Measurement setup and procedure is the same as under exercise Nm. 1 (Item
4.1.1.1.2), so check the details for proper connection.
Expected result:
Earth impedance measurement in frequency range from 55 Hz up to 15.4 kHz shows
prominent inductive character of measured object.
We propose to use “sweep mode” measurement for analysing the earth impedance
character, to see the test object characteristic also at the higher frequencies.
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 ...