Ukubalwa amandla kwiisekethe zombane

Nasiphi na isixhobo sombane luphawulwa parameters ezininzi ezingundoqo, phakathi apho ombane rated, ngoku kunye namandla. Ngamanye amaxesha sheet data amandla elicaziweyo ombane, ke ngoku kule meko lulula yafunyanwa ngokusebenzisa i ezaziwayo-kakuhle ifomula Ohm ngayo (kakade, kukho inani ubhukisho - cos umz, kufuneka yaziwe). Ebuyiselwayo yinyaniso: kokwazi ngoku ombane, kunokwenzeka ukwenza ukubala amandla. Uthungelwano sino ezininzi izinto ngalo mbandela, kodwa inkoliso yabo senzelwe kwiingcali.

Makhe sijonge oko ukuthini igama elithi "amandla yombane", ziziphi iintlobo zayo nendlela ukwenza ubalo amandla. Le ngokoqobo amandla ibonisa indlela ukufaka fast (isixhobo) Amandla ithatha indawo enye okanye olunye uhlobo lomsebenzi luncedo. Loo nto ilula kangaka! igama elithi "yokusebenza" kusenokwenzeka ukuba usebenzise okufanayo izixhobo non-zombane.

Le ukwahlukana yombane yamkela, njengoko apho kukho amandla esebenzayo kunye izidubuli. Eyokuqala iguqulelwa ngqo kumsebenzi luncedo, ke ngoko, loo nto ithathwa enkulu. Le yunithi W nezakhi -. Kilowatt, ozimegawathi njl kubonisiweyo zasendlini. Nangona oku akuthethi ukuba akukho candelo lovukelo. Ngenxa yoko, le yesibini - an kunganqwenelekiyo ukuba zenzeke, ukususela ekuphunyezweni umsebenzi akuthethi ukuthatha inxaxheba, yaye echithwe iindidi ngeendidi ilahleko. Kulinganiswa "var" (volt ampere izidubuli) nezakhi - kilovolt-ampere yovukelo njl Ubungakanani macandelo esebenzayo kunye izidubuli zenza amandla epheleleyo (volt-amperes VA).

Umzekelo iphawulekayo lomsebenzisi kunye umthwalo resistive ecocekileyo - heater yombane. Xa wayedlula kulo umsinga wombane wenziwa kukurhala, ngokulingana ngqo. Ngokufanayo, izenzo Lwabathengi eneji lovukelo - transformer zakudala. Xa umsebenzi yakhe engathi kudala mhlaba otsalayo nto leyo akuyomfuneko (ukusebenzisa ipropati induction electromagnetic). Oluphambili Imagnethi yi magnetized, luyancipha. Ngamanye amazwi:

Q = U mna isono Fi,

apho isono Fi - i sine ye engile ephakathi yangoku kunye ombane. uphawu yayo ixhomekeke kuhlobo imithwalo (capacitive okanye ezenza).

amandla ubalo luqala nokumisela uhlobo yangoku: rhoqo okanye umahluko, njengoko iifomyula endaweni yonke.

Kwimeko yokuqala, njengesiphumo umthetho yamandulo Ohm kaThixo. Power P na imveliso I yangoku kwi U ombane:

P = mna U (W = A * B).

Xa ejikeleza ngumthombo igunya kuthathelwa ingqalelo ulwalathiso EMF: kuyimfuneko ukwenzela ukubalwa kwemvelaphi amanzi na. Ngoko ke, lo wenkunkuma okanye ibhetri apho yangoku ezivela "-" ukuba "+", unika amandla ukuya wesekethe umthwalo, ithumela igunya. Ukuba flow yangoku malunga namandla isicelo (womserbia ibhetri), ngoko ke amandla Ukutsalwa EMF umthombo.

Power calculation Ifomula i AC (chain single-isigaba) akhawunti lomlingani - "amandla factor." Umele icandelo amandla ebonakalayo umlinganiselo ukuba lilonke. Ngokucacileyo, kwimeko TAN cosine ilingana no-1 (egqibeleleyo), ekubeni kungekho candelo lovukelo. Kungenjalo, ukuze kuncitshiswe ukulahleka ecaleni wenkunkuma le ngokusebenzisa iijoyinti ukwanda ezahlukeneyo okanye ezinye izisombululo zobugcisa.

Ngoko ke:

P = U Mna cos Fi.

Ukubalwa samandla kwiisekethe ontlantlu-ntathu yenzelwa ukuba kwisigaba ngasinye, kwaye amanani ngenxa ke ngoko bubonke. AC ibonakale amandla zibalwe ingcambu ye udibaniso lwezikweri components iyasebenza izidubuli. Kuba odala izixhobo (sikagesi) kubaluleke kakhulu ukwazi umthamo ngqo ngokupheleleyo, njengokuba zikhethwa ngenxa yoku, zonke ezinye izinto landela imixokelelwane. Kucacile ukuba kwiimeko ezininzi akunakwenzeka ukuba ukwazi kwangaphambili uhlobo umthwalo.