Power Network Application Trainer
– Earthing / Grounding network impedance measurement
104
4.1.3.3 S
– Flex measuring method by using one Flex-clamp - regular
foot resistance/ - resistive earthing type - simulated ground
wire connection
Figure 69-2:S-Flex measurement setup
Switch position Simulated condition
Application
Expected result
Regular measurement place
condition (simulated resistive earth
character), flex measurement,
simulated ground wire connection
Pylons (mono and multi-leg)
with and without protective earth
cable connection
Ski lifts
Radio towers
Foot Nm. 1 approx.30,1
Ω
Foot Nm. 2 approx.11,7
Ω
Foot Nm. 3 approx.23,6
Ω
Foot Nm. 4 approx. 5,63
Ω
Z
tot calc
= 2,95
Ω
Table 27-2: S-Flex measurement setup/result presentation
Measuring procedure
1. Follow the measurement setup connection described under 4.1.3.1 exercise. Connect
setup switches and ground wire accordingly.
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 ...