Power Network Application Trainer
– Earthing / Grounding network impedance measurement
121
4.1.6.1 Auto Sequence procedure- 4-pole and S - Flex measuring
method
– resistance type – simulated broken foot
resistance/resistive earthing type
Figure 77-2: 4-pole and S-Flex measurement setup
Switch position Simulated condition
Application
Expected result
Regular measurement place
condition (simulated resistive earth
character), single frequency
measurement for 3P method
Pylons (mono and multi-leg)
with and without protective earth
cable connection
Ski lifts
Radio towers
S-Flex:
Ztot = 2,66
Ω @ 329 Hz
4-pole:
Ze = 2,68
Ω @ 329 Hz
Table 40-2: 4-pole and S-Flex setup/result presentation
Two measurement methods (4-pole and S-Flex) executed under single Auto Sequence
is used under same test object for comparing the results and executed with single press
on “Start” button.
To join two measuring methods under single Auto Sequence, we need to prepare
appropriate one and connect the measured object properly, to be ready for both
measurement methods.
Auto sequence is created with METREL MESM software. Necessary steps are detail
described as well as important notes to be considered during measurement. For more
details how to create the Auto Sequence, please check manual for METREL
ESManager software.
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 ...