Nzira iyo rutivi rwemuchinjikwa rutivi uye simba rwakabatana kune mumwe nemumwe

Chero munhu upi zvake ane basa rakabatana nekuchengetedzwa kwemagetsi emagetsi, anongoda kuziva kuti angaverenga sei chikamu chemuchinjikwa wekambo maererano nesimba. Pasina izvi, unogona kutarisana nemamiriro ezvinhu asingafadzi, apo munguva pfupi yapfuura mutsetse wakatambanudzirwa kumutengesi kuputsika nekuda kwekupisa kwemafuro emakumbo ekutakura ikozvino. Kuti udzivise izvi, munhu haafaniri kungoyeuka nguva dzose kuti rutivi rwemuchinjikwa rutivi uye simba runeikubatanidza, asi zvakare, kana zvichidiwa, ita zviyero. Iko kukwanisa kusarudza zvakanaka kukwana kwevatungamiri zvichienderana nechisimba chekushandisa kunogona kubatsira muupenyu hwezuva nezuva: somuenzaniso, kusarudza tambo yewaini yakagadzirirwa moto.

Wira-cross-section, simba uye rinobvumirwa ikozvino

Sezvo vazhinji vemafomu emagetsi zvisiri nyore, vanhu vazhinji, vasina kumbonzwa nezvekudiwa kwekuita chero zviyero, vanofunga kuti pasina rubatsiro rweyanyanzvi mumunda wesimba, hazvizoshandi. Kutaura zvazviri, chikamu chemuchinjiro uye simba chinosanganiswa nemamwe mapepa akareruka. Basa racho nderokuziva kuti zvakanyanya sei iye zvino uye kusarudzwa kwemuitisi nehuwandu hwehuwandu hwemashoko.

Dzidziso

Iyo inozivikanwa kubva kuchikoro chesefizikiki kuti ikozvino kupfuura kuburikidza nenyaya yekuitisa inokonzera kupisa kwayo, kukosha kwaro kunobva pane imwe nzvimbo yepamusoro-soro uye kukonzerwa kwevatungamiri (zviri pachena kuti mishonga yakatetepa inogadzirisa yemuviri inopisa ichikwira kupfuura yakapetwa yesimbi). Iko kukosha kwemazuva ano kunobatsirawo, ndiko kuti, nekuwedzera kwayo, kupisa kunotanga kuwedzera. Ngatiyeukei nzira yekuverengera ikozvino kubva kunezivo inozivikanwa uye kushorwa. Inobva mumutemo weklasi Ohm uye inotarisa seI = U / R, uko U inonzi volts muVotts, R inopikisa mu Ohms.

Zvisinei, sei chikamu chemuchinjikwa uye simba zvine chokuita neizvi? Directly! Izvo zvakanyanyisa munyaya ino kushandisa gwaro rekusava nesimba, asi ikozvino (kushamwaridzana kwavo kucharatidzwa pasi apa, kupa chirevo).

Simba remagetsi yemutengi rinobatana nehuwandu hwezvino hunoyerera kuburikidza nemutungamiri. Munyaya yakawanda, inogona kugadziriswa nemurairo P = I * U, kwandinenge ndiri ikozvino. Isu hatina kufunga nezvechimiro chemasimba (chinoshanda kana chekuita basa), zvisinei, iyo yakapiwa dare yakakwanira kusarudzwa kwetambo kudarika chikamu. Chikamu chekupedzisira chinoramba chiripo - kutarisa rutivi-rutivi rwechikamu chemukati wekanda. Vane mashizha emagetsi vanosarudza iyi parameter "neziso", asi tinokurudzira kushandisa shanduro iri nyore inogona kudzivisa zvikanganiso zvinogona kuitika.

Dzidzira

Kubva kumucheto wekambo, zvakakosha kubvisa kusungirirwa, kuisa pachena simbi, uye kuyera hupamhi. Zvadaro kukosha kunowanikwa kunofanira kuiswa panzvimbo ye S = (3,14 * (d * d)) / 4, apo d iyo yakareba mumamilimita.

Inoramba ichitora bhuku rekutsvaga (PUE), tsvaga tafura yemabhairiro ezvino uye chikamu uye sarudza kabhi rinodiwa. Nyaya uye nzira yekuisa mutsara inotorwawo.

Muenzaniso kubva paupenyu

Ngatiti iwe unofanirwa kubatanidza 2 kW boiler kune 220 V network.Kushandisa mufananidzo wepamusoro we "P", tinowana ikozvino ye 9 amperes. Muchitoro, iyo yakaderera mbiri-kati kabato ine mhangura inogadziriswa inoratidzwa nechikamu chemukati we 0.75 ne 1 mm square. Vhura hurukuro, tinowana "kuzarura". Mbili-core ne-cross-section ya 1 mm.kv. Inosangana 16 amperes (GOST-80!), Uye nokuda kwe 0.75 inofananidzwa ne 15 A. Inosvika kaviri yezviyo. Nokudaro, mumuenzaniso uyu, kushandiswa kwematafura nehutauriri hwemhangura huripo hunobvumirwa zvakakwana. Iyi ndiyo nzira iyo chikamu chemuchinjiro uye simba zvakabatana.