DIN VDE 0100-520 quick sizing

Cable Cross-Section Calculator

Calculate the expected voltage drop of low-voltage lines in seconds and check whether the selected cross-section complies with the standard.

Cable data (three-phase)

Power (kW) or current (A)

Cable length in meters50 m

Conductor cross-section (mm²)

Note: This simplified calculation applies to a symmetrically loaded 400V three-phase network with copper conductors (κ = 56) at a cos φ of 0.9. Always also consider the installation method and cable bundling for the final design.

Result

Voltage drop in %

0.77%

Compliant (≤ 3%)

Voltage drop (ΔU)

3.07 V

Netzstrom I

35.3 A

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