Kalkulator pada napona
Procijenite napon izgubljen duž žice na osnovu dužine, struje i veličine vodiča.
Rezultati se ažuriraju dok tipkate.
O ovom kalkulatoru
the one-way length of the cable, the area field is the value of the resistivity of the metal (copper ≈ 0.0175 Ω·mm²/m, aluminium ≈ 0.0282 Ω·mm²/m), and the area field is the value of the resistivity of the metal (copper ≈ 0.0175 Ω·mm²/m, aluminium ≈ 0.0282 Ω·mm²/m). The area field is the value of the resistivity of the metal (copper). As a result, the current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing through the cable. The current flowing through the cable is equal to the current flowing
Često postavljana pitanja
Kako se izračunava pad napona?
Za jednofazni, Vdrop = 2 × ρ × L × I / A. Faktor 2 računa za struju koja putuje van i natrag; trofazni koristi √3 umjesto 2.
Koji pad napona je prihvatljiv?
Pravilo je da se ukupni pad održava ispod 3% za grane krugova i 5% ukupno.Veći vodiči (veća površina) smanjuju pad.
Bakar ili aluminij - da li je važno?
Aluminij ima oko 60% veći otpor od bakra, tako da aluminij iste veličine pada proporcionalno više napona.
Zašto formula koristi dvostruku dužinu?
Struja mora teći prema opterećenju i natrag, tako da jednofazni krug vidi pad oba provodnika - dakle faktor od 2 × dužina. trofazni krugovi koriste √3 (oko 1,732) umjesto toga, odražavajući geometriju uravnotežene trofazne snage.
Kako da smanjim pad napona?
Koristite veći provodnik (udvostručenjem poprečnog presjeka otprilike se prepolovljuje pad), skratite provod, podijelite opterećenje preko paralelnih kabela ili povećajte napon napajanja. Veći bakar je uobičajeno rješenje jer je pad obrnuto proporcionalan površini.
Koliko energije se gubi u kabelu?
Rasipanje energije je pad puta struja, Ploss = Vdrop × I. Pad od 3,5 V na 20 A troši 70 W kao toplotu u žici - energija koju plaćate ali nikada ne koristite, što je razlog zašto duge vožnje visokim strujama opravdavaju deblji, niži gubitak kabela.
Mogu li koristiti AWG mjerila umjesto mm² površine?
Da. Odaberite mjerni instrument u naprednoj AWG listi i on će nadjačati polje površine sa presjekom tog instrumenta u mm² (npr. 10 AWG ≈ 5.26 mm²), tako da možete raditi u sistemu mjernih instrumenata koji koriste sjevernoamerički instalateri.
API — koristite ovaj kalkulator iz koda
Pozovi ovaj kalkulator kao slobodnu JSON krajnju tačku - nije potreban ključ. Pošalji vrijednosti polja ispod kao parametre upita ili JSON. Sve što izostavite koristi istu zadanu vrijednost kojom je ova stranica unaprijed popunjena; nepoznat parametar je 400, nikad tiha nula. Pročitajte cijelu API dokumentaciju →
Krajnja tačka
GET https://calculator.free/api/v1/voltage-drop/curl
curl "https://calculator.free/api/v1/voltage-drop/?material=copper&length=50¤t=20&area=10&source=230"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/voltage-drop/?" + new URLSearchParams({
"material": "copper",
"length": "50",
"current": "20",
"area": "10",
"source": "230"
}));
const data = await r.json();
console.log(data.results);Rezultati su procjene samo za opće smjernice, a ne financijski, medicinski ili porezni savjeti.