WACKER Group EH 23/110/22, Руководство оператора

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DIAGRAM
Selection of required cross section for extension of cables and power lines
This procedure takes into consideration:
1. The ohmic and inductive resistance of the line with an admissible loss of voltage of 5% and cos phi =
0,8 as per voltage-frequency-curves.
2. The admissible warming-up of the lines as per VDE standard (table of required minimum cross section).
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ATTENTION! The larger one of both cross sections has to be chosen.
Example:
Nominal voltage 3 ~ 400 V, 50 Hz
Rated current 15 A Line length 100 m
15 A x 100 m = 1500 A x m
Cross section as per diagramm: 2,5 mm
2
Cross section as per table: 15 A : 1 mm
2
Chosen cross section: 2,5 mm
2
Voltage - Frequency - Curves
Cross-section area of cable in mm
2
Minimum cross-section
area according to VDE
Max. Max.
Cable load fuse
mm
2
A A
1 15 10
1,5 18 10/3~16/1~
2,5 26 20
4 34 25
6 44 35
10 61 50
16 82 63
25 108 80
Rated current x length of cable A x m