Ulayini wokusabalalisa we-low-voltage ubhekisela emugqeni owehlisa i-high-voltage 10KV kuya ku-380/220v izinga ngokusebenzisa i-transformer yokusabalalisa, okungukuthi, ulayini we-low-voltage othunyelwa kusukela esiteshini esincane ukuya emishini.

Ulayini wokusabalalisa we-low-voltage kufanele ucatshangelwe uma uklama indlela yezintambo zesiteshi esincane.Kwamanye ama-workshops asebenzisa amandla amakhulu, indawo yokusebenzela nayo ifakwe i-transformer substation.I-transformer ihlinzeka ngamandla ezintweni zikagesi, kuyilapho i-For workshops esebenzisa amandla amancane, ukunikezwa kwamandla kuhlinzekwa ngokuqondile yi-transformer yokusabalalisa.

Indlela yokusabalalisa amandla e-low-voltage

Ulayini wokusabalalisa we-low-voltage uklanywe futhi ubekwe ngokuvumelana nohlobo, ubukhulu, ukusatshalaliswa kanye nemvelo yomthwalo.Ngokuvamile, kunezindlela ezimbili zokusabalalisa, uhlobo lwe-radial ne-trunk, njengoba kuboniswe emfanekisweni ongakwesokudla.

Imigqa ye-Radial inokwethenjelwa okuhle, kodwa izindleko zokutshala izimali eziphezulu, ngakho manje izintambo zokusabalalisa amandla aphansi-voltage zivame ukusetshenziswa uhlobo lwe-trunk, olungathola ukuguquguquka okwanele.Lapho ubuchwepheshe bokukhiqiza bushintsha, umugqa wokusabalalisa awudingi ukuba wenze izinguquko ezinkulu.Izindleko zikagesi ziphansi, okuyizici zawo ezimbili ezinkulu.Yiqiniso, mayelana nokuthembeka kokunikezwa kwamandla, akukuhle njengohlobo lwe-radial.

Izinhlobo zemigqa yokusabalalisa i-low-voltage

Kunezindlela ezimbili zokufaka zemigqa yokusabalalisa i-low-voltage, okungukuthi, indlela yokubeka ikhebula kanye nendlela yokubeka umugqa ongaphezulu.

Ngenxa yokuthi ulayini wekhebula ubekwe ngaphansi komhlaba, unomthelela omncane wemvelo emhlabeni wangaphandle, njengomoya onamandla nokuba neqhwa, futhi azikho izintambo ezivezwa phansi, ngaleyo ndlela kuhlobise ukubukeka kwedolobha nendawo yesakhiwo, kodwa izindleko zokutshala imali. yomugqa wekhebula iphezulu, futhi ukugcinwa kunzima kakhulu., izinzuzo zemigqa ephezulu ziphambene.Ngakho-ke, ezindaweni ezingenazo izidingo ezikhethekile, i-wiring ye-low-voltage isebenzisa indlela yomugqa ophezulu.

Imigqa ye-low-voltage overhead ngokuvamile yenziwa ngezigxobo zokhuni noma izigxobo zikasimende ukwenza izigxobo zocingo, futhi amabhodlela e-porcelain asetshenziselwa ukulungisa izintambo ezingalweni eziphambanayo zezigxobo.Ibanga phakathi kwezigxobo ezimbili cishe li-30 ~ 40M egcekeni, futhi lingafinyelela ku-40 ~ 50M endaweni evulekile.Ibanga phakathi kwezintambo lingama-40 ~ 60 cm.Ukumiswa komugqa kufushane ngangokunokwenzeka.Kulula ukunakekela nokulungisa.

Ibhokisi lokusabalalisa endaweni yokwakha

Amabhokisi okusabalalisa ezindaweni zokwakha angahlukaniswa amabhokisi okusabalalisa ajwayelekile, amabhokisi okusabalalisa angaguquki kanye namabhokisi okusabalalisa amaselula.

Ibhokisi lokusabalalisa elijwayelekile:

Uma kuyi-transformer ezimele, i-transformer kanye nebhokisi eliyinhloko lokusabalalisa ngemva kokufakwa yi-office supply bureau.Ibhokisi lokusabalalisa eliyinhloko lifakwe isinqamuli sesifunda esine-voltage ephansi, amamitha wehora we-watt asebenzayo futhi asebenzayo, ama-voltmeters, ama-ammeters, ukushintshwa kokudlulisa amandla kagesi, nezibani zezinkomba.Izintambo zomugqa wegatsha ngalinye lendawo yokwakha kufanele zixhunywe ebhokisini lokusabalalisa legatsha elingemva kwebhokisi elikhulu lokusabalalisa.Uma kuyi-transformer efakwe esigxotsheni, amabhokisi amabili okusabalalisa afakwe esigxotsheni, futhi indiza ephansi yebhokisi ingaphezu kuka-1.3m ukusuka phansi.I-DZ series low-voltage circuit breaker isetshenziswa ebhokisini lokusabalalisa.Ingqikithi ye-circuit breaker ikhethwa ngokuya ngesilinganiso samanje se-transformer.Umugqa wegatsha ngamunye ulawulwa yi-circuit breaker enomthamo omncane.Umthamo we-circuit breaker ukhethwa ngokuya ngesilinganiso esiphezulu samanje sesifunda.Uma yamanje incane, kufanele kube Khetha inkinobho yokuvuza (umthamo omkhulu weswishi yokuvuza ngu-200A).Inani lama-sub-circuit breaker kufanele libe ngaphezulu kokukodwa kuya kwamabili kunenombolo yamagatsha aklanyelwe njengamagatsha asekelayo.Ibhokisi lokusabalalisa indawo yokwakha alifakelwe ama-voltmeters wamanje kanye nokuqapha.

Uma kungeyona i-transformer ezimele, kodwa i-transformer yasekuqaleni isetshenziswa, ibhokisi lokusabalalisa eliyinhloko kanye nebhokisi lokusabalalisa le-shunt lihlanganisiwe, futhi amamitha we-watt-hora asebenzayo futhi asebenzayo angeziwe.Kusukela ebhokisini lokusabalalisa eliyinhloko, umugqa ongemuva wamukela isistimu ye-TN-S yezigaba ezintathu zezintambo ezinhlanu, futhi igobolondo lensimbi lebhokisi lokusabalalisa lidinga ukuxhunywa ekuvikelweni kwe-zero.

Ibhokisi lokusabalalisa elilungisiwe:

Ngenxa yolayini wekhebula onezinjongo eziningi obekwe endaweni yokwakha, isistimu yokuphakela amandla yamukela uhlobo lwe-radial, futhi ibhokisi ngalinye lokusabalalisa elingaguquki liyindawo yokugcina yaleli gatsha, ngakho ngokuvamile libekwa eduze kwempahla kagesi yaleli gatsha.

Igobolondo lebhokisi likagesi lokusatshalaliswa okungaguquki lenziwe ngepuleti lensimbi elincanyana, futhi phezulu kufanele kungabi yimvula.Ubude bomzimba webhokisi ukusuka phansi bukhulu kuno-0.6m, futhi insimbi ye-engeli isetshenziswa njengokwesekwa komlenze.I-switch enkulu engu-200 ~ 250A kuphela, esebenzisa inkinobho yokuvuza enezigxobo ezine, umthamo ungamanje olinganiselwe wezinto zikagesi ezisebhokisini, uma kucatshangelwa ukuguquguquka, ingaklanywa ngokuya ngemibandela eyisisekelo yemishini ehlukahlukene esetshenziswa endaweni yokwakha. , njengokucabangela ukuthi ibhokisi ngalinye lingaxhunywa kumbhoshongo we-crane noma i-Welder.Amaswishi amaningana e-shunt afakwe ngemuva kweswishi eyinhloko, futhi amaswishi okuvuza anezigxobo ezine nawo ayasetshenziswa, futhi umthamo uhlanganiswa ngokuya ngokucaciswa kwezinto ezivamile zikagesi.Isibonelo, ukushintshwa okuyinhloko kusebenzisa i-switch yokuvuza engu-200A, enamagatsha amane, amabili angu-60A kanye nama-40A amabili.Imbobo engezansi yeswishi ye-shunt kufanele ifakwe i-porcelain plug-in fuse njengendawo esobala yokunqamula futhi isetshenziswe njengendawo yokugcina izintambo.Imbobo engaphezulu ye-fuse ixhunywe kwimbobo engezansi yeswishi yokuvuza, futhi imbobo engezansi ayinalutho kuzintambo zemishini.Uma kudingekile, inkinobho yesigaba esisodwa kufanele ifakwe ebhokisini, ilungele ukusetshenziswa nemishini yesigaba esisodwa.

Njengephuzu lokugcina lomugqa wegatsha, ukuze kuqiniswe ukuthembeka kokuvikelwa komugqa ongathathi hlangothi.Ukuphinda ukugxilisa kufanele kwenziwe ebhokisini ngalinye elingaguquki lokusabalalisa.

Ngemva kokuba ucingo lwethulwe ebhokisini, ulayini onguziro osebenzayo uxhunywe nebhodi letheminali, umugqa wesigaba uxhunywe ngokuqondile echwebeni elingenhla le-switch yokuvuza, futhi ulayini wokungathathi hlangothi ovikelayo uboshwe kubhawodi eliphansi egobolondweni le- ibhokisi lokusabalalisa futhi lisekelwe ngokuphindaphindiwe.Ngemva kwebhokisi lokusabalalisa Ulayini we-zero wokuvikela wonke uxhumeke kule bhawodi.

Ibhokisi lokusabalalisa leselula:

Ifomethi yebhokisi lokusabalalisa leselula iyafana naleyo yebhokisi lokusabalalisa elingaguquki.Ixhunywe ebhokisini lokusabalalisa elingaguquki ngekhebula eliguquguqukayo elineshehethi yenjoloba futhi ihanjiswe endaweni eseduze ngangokunokwenzeka nezinto zikagesi, njengokusuka esitezi esingezansi kuya esitezi esiphezulu sokwakha.Kukhona nokushintshwa kokuvuza ebhokisini, futhi umthamo mncane kunalowo webhokisi elilungisiwe.Iswishi yesigaba esisodwa kanye nesokhethi kufanele kufakwe ukuze kuhlinzeke ugesi wesigaba esisodwa ezintweni zikagesi zesigaba esisodwa.Igobolondo lensimbi lebhokisi lokusabalalisa kufanele lixhunywe ekuvikelweni kwe-zero.