Áireamhán Cumhacht Leictreach
Cumhacht i vataí, kW agus horsepower - móide úsáid fuinnimh agus costas reatha.
Torthaí a nuashonrú mar a chlóscríobh tú.
Maidir leis an áireamhán seo
Electrical power is the rate at which a device converts electrical energy, measured in watts. For a DC or purely resistive load it is simply voltage times current, P = V × I. For an AC load with a power factor below 1 — motors, transformers and other inductive loads — the real power that does useful work is P = V × I × PF, while the product V × I alone gives the larger apparent power in volt-amperes. This calculator reports the power in watts, kilowatts and mechanical horsepower, using 1 hp = 745.7 W.
As a worked example, a device on a 120 V circuit drawing 10 A at unity power factor uses P = 120 × 10 = 1,200 W, which is 1.2 kW or about 1.61 hp. If instead it were a motor with a 0.8 power factor, the real power would fall to 120 × 10 × 0.8 = 960 W even though it still draws the same 10 A. Divide watts by 745.7 to convert to horsepower, or by 1,000 to get kilowatts.
The advanced usage fields turn power into running cost. Daily energy in kilowatt-hours is the power in kW multiplied by the hours used per day; multiply by your price per kWh for the daily cost and by 30 for a monthly estimate. A 1.2 kW load run 4 hours a day uses 4.8 kWh daily, about 144 kWh a month, which at $0.15/kWh is roughly $21.60 a month — the kind of figure that helps compare appliances, size a generator or budget a workshop.
Ceisteanna Coitianta
Cad é an fhoirmle cumhachta leictreach?
Is é cumhacht i vataí P = V × I × PF. I gcás DC nó ualach resistive is é an fachtóir cumhachta 1, mar sin is é cumhacht ach voltas uaireanta reatha.
Cé mhéad vata i horsepower?
Is ionann ceann capall cumhachta meicniúil 745.7 vata, mar sin tá ualach 1492 W thart ar 2 hp. Roinn vataí faoi 745.7 a thiontú.
Cén chaoi a n-oibrítear an costas reatha amach?
Is éard atá i bhfuinneamh laethúil ná cumhacht (kW) × uair an chloig in aghaidh an lae, i kWh.Iolraigh faoi 30 lá agus do phraghas in aghaidh an kWh chun an costas míosúil a mheas.
Cad é fachtóir cumhachta agus cathain a athraím é?
Is éard atá i gceist leis an fachtóir cumhachta ná an codán den chumhacht dhealraitheach (V × I) a dhéanann fíorobair. Is é 1 é le haghaidh DC agus ualaí frithsheasmhacha cosúil le téitheoirí agus bolgáin ghealbhruthacha, ach titeann sé go dtí thart ar 0.7-0.9 le haghaidh mótair agus go leor soláthairtí leictreonacha, ag laghdú na vataí fíor.
Cad é an difríocht idir vataí agus volta-ampéirí?
Is Watts cumhacht fíor (V × I × PF); volta-ampéirí cumhacht dealraitheach (V × I) gan aon ceartú cumhacht-fachtóir.I gcás ualaí resistive tá siad comhionann, ach le haghaidh ualaí imoibríocha an rátáil VA níos airde, agus sin an fáth gineadóir agus UPS rátáil a thugtar i VA.
Conas is féidir liom vata a thiontú go horsepower?
Roinn na vataí faoi 745.7.Mar sin, tá 1,200 W thart ar 1.61 hp, agus tarraingíonn mótar 1 hp thart ar 746 W de chumhacht meicniúil-choibhéiseach (níos mó leictreach, nuair a chaillteanais éifeachtúlachta san áireamh).
API — úsáid an áireamhán seo ó chód
Glaoigh ar an áireamhán seo mar chríochphointe JSON saor in aisce - níl aon eochair ag teastáil. Seol na luachanna réimse thíos mar pharaiméadair cheist nó JSON. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Léigh an doiciméadú iomlán API →
Deireadhphointe
GET https://calculator.free/api/v1/electrical-power/curl
curl "https://calculator.free/api/v1/electrical-power/?voltage=120¤t=10"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/electrical-power/?" + new URLSearchParams({
"voltage": "120",
"current": "10"
}));
const data = await r.json();
console.log(data.results);Is meastacháin iad na torthaí le haghaidh treoir ghinearálta amháin, ní comhairle airgeadais, leighis nó cánach.