Grundfos SP14-27 Installation And Operating Instructions Manual page 19

Appendix
Example:
U = 3 x 400 V
I = 40 A
L = 140 m
U = 2 %
140
L

Lx = ------- - = --------- - = 70 m = q 25 mm
U
2 %
U = 3 x 400 V
I = 40 A
U = 2
%
L = 140 m
2
1
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