Khetha jwale kabel sefapano karolo - mosebetsi o bonolo, empa ke eena ea ikarabellang

E mong le e motlakase ba tšoanelehang hore ba ithuta bohlokoa ba ho mojaro lebeletsoe ka wiring le ka hang-hang etsa khetho karolong ya kabel jwale. mosebetsi oo o ke le bonolo, e rutoa ho rarolla mokgatlo ofe kapa ofe botekgeniki profil, ho tloha ka sehloohong ho phahameng. E lokela ho a hopola hore, ka hore re khethe kabel, ho molemo ho feta ho etsa phoso ka kgolo ho feta ka lehlakoreng nyenyane.

Ka dimela liindasteri dipalelelo tsohle tse hlokahalang tse etsoang ke profesionalce le khethehileng le boenjiniere motlakase, kahoo entsprechen 'a letanta le ikemiselitse ho se ka molao-motheo oa' betla, hore re na le ", le optimized mabapi le ditjeo fokotsa, ho melao ea tsamaiso botekgeniki. Ho na le molao-motheo melao ea disebediswsa motlakase mona, 'me ba tataisoe ke baenjiniere, ba etsa kgetho karolo ea kabel jwale. RB (seea-le-ditlhomo Terms disebediswsa) lia hlokahala ho bala mong le motlakase-moqapi.

Mathata a hlaha ha batho ba u se ke ua ba le mangolo a thuto e lekaneng, leka ho etsa tlhomamiso kapa wiring tloswa lapeng la bona kapa Cottage ya. Selection ea kabel sefapano karolo - e nang le boikarabelo. Etsa hore e fosahetseng, ho ka molemo ka ho fetisisa ho re talimane le ho ba le ho tlōla botšepehi ba samente le ho fetola terata akhotsoang. Ka mpe ka ho fetisisa-a sebetsa nyeoe ea maemo ha ba batla ho fane ka mofuta oa mollo.

Ho utloisisa ka liphello tsa liphoso tsa ka tlhopho ya kabel e lokela ho ba tloaelane le melao e bonolo haholo, e thehiloeng 'nete hore fisiks sekolong.

kahoo:

The motlakase ho hanyetsa ea mokhanni e le ke ka ho toba tekanyo e lekanang ya ho bolelele ba eona le ho resistivity. Sefapano-karolo ho fapana le hoo, e ama bona e le hore se mo khutlisetsang bocheng:

R = (ρ x, L) / S,

moo:

• R - boleng ba resistivity, lekanngoa ka ohms;
• ρ - resistivity, i.e. ho hanyetsa ea mokhanni ka lintho tse bonahalang tse 1 limilimithara ho limithara 1 le karolo ^2;
• L - bolelele ba wiring, limithara;
• S - mokhanni sefapano sectional sebakeng limilimithara ^2.

The resistivity fapane har'a lirafshoa tse sa tšoaneng. Ka mohlala, bakeng sa silevera, ho ka 0,016 Ohm x limilimithara ² / limithara ^2, ka polatinamo - 0,1, 'me seo ea khauta - 0,02. Leha ho le joalo, ho kabel sefapano karolo kgetho jwale ha ho akarelletsa le tšebeliso ea tšepe ea bohlokoa (lebaka hlakile).

Hona joale bakeng sa mojaro ena. Ho qoba liphoso tse ka tjhelete e ya jwale hore a tla phalla ka lithapo, e ho lekane ho tseba tsela eo e bonolo ea molao Ohm bakeng sa balebeli ba potoloho le mojaro resistive:

W = U x I,

moo:

• W - matla a lekanngoa ka Watts;
• U - timang gagamalo (mona ke 220 volts);
• Ke - boleng jwale (ampere).

Ha e le hantle, ho Volt-li-amp li fapane le W, empa ka ho ya ka le mafelo a, e leng e laoloa ke mofuta wa mojaro a sebetsang a (mabone litleloubu, heaters le joalo-joalo. P.), phapang ena e ka ho hlokomolohuoa.

Phaella ka ho re ho matla a lisebelisoa tsohle tsa motlakase, ho ka etsahala ho beha chelete ea mojaro ka Watts hore o tla etsa tlhopho ya karolo jwale ya kabel ena.

Ebe tsohle e bonolo. Ho tloha ka khauta kapa lithapo polatinamo hang sebedisa esita Abramovich thahasellong ea ke lirafshoa tse ling tse ho feta tloaelehileng. Haeba qeto e e entsoeng mabapi le e theko e phahameng ya usb, koporo, e mong le millimeter lisekoere (kapa e bontša hore ke ramotlakase "lisekoere") o tla khona ho fetisa ho fihlela ho li-amp 10. Ka thepa ya aluminium ba inyenyefatsang 8 li-amp, empa e le theko e tlaase.

E le busa, le ho khetha malapeng a ka kabel-karolo leketla sefapanong jwale o entsoe e dumellana le boholo aluminium terata le sekoere halofo (sehokelo) le polkvadrata (mabone). Appliance kapa bareki ba bang matla-timetsang hloka bushings arohaneng kabel mokhanni karolo e 2,5 limilimithara ^2.

Ke habohlokoa ho hopola hore kopana terata ea koporo le aluminium etsahala. sotha ena qetellong ba lahleheloang thepa lona conductive.