Grundfos SP Series Installation And Operating Instructions Manual page 448

448
Example:
U = 3 x 220 V
I = 5 A
L = 105 m
U = 3 %
L 105

Lx = ------- - = --------- - = 35 m = q 2,5 mm
U
3 %
U = 3 x 220 V
I = 5 A
U = 3
%
L = 105 m
2