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Uredljive vzorčne vrednostiVaša ocena
Posodobljen rezultatNajmanj · Površina · Padec napetosti
3.93 mm²
Površina
4 mm²
Voltage-drop criterion only
Padec napetosti
1.31 %
2.62 V · 39.3 W Izguba
Rezultati so namenjeni načrtovanju. Pred izbiro opreme preverite predpostavke.
Lokacija in tarife se ne pridobijo samodejno. Izračun uporablja vnesene vrednosti.
Kako uporabljati kalkulator
Vnesite tok in dolžino kabla v eno smer. Rezultat obravnava padec napetosti; tokovno zmogljivost in zaščito preverite posebej.
Metoda izračuna
DC loop resistance = 2 × one-way length × resistivity ÷ area. Voltage drop = current × resistance. Required area = 2 × length × current × resistivity ÷ allowed voltage drop. Copper ρ20 = 0.0175 and aluminium ρ20 = 0.0282 Ω·mm²/m; temperature coefficients are 0.00393 and 0.00403 /°C.
Pred uporabo rezultata
Voltage-drop sizing only: this does NOT check ampacity, insulation voltage, conduit fill, bundling, ambient derating, protective devices, connectors or local electrical rules. Final cable selection must satisfy those checks. Do not use this DC model for three-phase AC.
Is the suggested mm² safe for the current?
Not necessarily. It only meets the entered voltage-drop target. An installer must separately verify ampacity and installation requirements.