Umgca wokusabalalisa i-low-voltage ubhekisela kumgca onciphisa i-high-voltage 10KV ukuya kwi-380 / 220v inqanaba nge-transformer yokusabalalisa, oko kukuthi, umgca we-low-voltage othunyelwe ukusuka kwi-substation ukuya kwisixhobo.

Umgca wokusabalalisa i-low-voltage kufuneka uqwalaselwe xa uqulunqa indlela yocingo ye-substation.Kwezinye iindibano zocweyo ezinokusetyenziswa ngamandla amakhulu, iworkshop ikwaxhotyiswe ne-transformer substation.I-transformer inika amandla kwisixhobo sombane, ngelixa ii-workshops ezinokusetyenziswa kancinci kwamandla, ukunikezelwa kwamandla kubonelelwa ngokuthe ngqo ngumqhubi wokusabalalisa.

Indlela yokuhambisa amandla asezantsi-voltage

Umgca wokusabalalisa i-low-voltage yenzelwe kwaye ibekwe ngokohlobo, ubungakanani, ukusabalalisa kunye nohlobo lomthwalo.Ngokuqhelekileyo, kukho iindlela ezimbini zokusabalalisa, uhlobo lwe-radial kunye ne-trunk, njengoko kubonisiwe kumzobo osekunene.

Imigca yeRadial inokuthembeka okulungileyo, kodwa iindleko eziphezulu zotyalo-mali, ngoko ke ngoku i-low-voltage power distribution wiring isetyenziswa ngokuqhelekileyo uhlobo lwe-trunk, olunokufumana ukuguquguquka okwaneleyo.Xa iteknoloji yokuvelisa itshintsha, umgca wokusabalalisa awudingi ukuba utshintshe kakhulu.Iindleko zombane ziphantsi, eziziimpawu zayo ezimbini eziphambili.Ngokuqinisekileyo, ngokubhekiselele ekuthembekeni kokunikezelwa kwamandla, akulunganga njengohlobo lwe-radial.

Iindidi zemigca yokuhambisa i-low-voltage

Kukho iindlela ezimbini zokufakela imigca yokuhambisa i-voltage ephantsi, oko kukuthi, indlela yokubeka intambo kunye nendlela yokubeka umgca ophezulu.

Ngenxa yokuba umgca wentambo ubekwe phantsi komhlaba, unempembelelo encinci yendalo kwihlabathi langaphandle, njengomoya onamandla kunye ne-icing, kwaye akukho cingo oluvezwayo emhlabeni, ngaloo ndlela luhombisa inkangeleko yesixeko kunye nokusingqongileyo kwesakhiwo, kodwa iindleko zotyalo-mali. yomgca wentambo iphezulu, kwaye ukugcinwa kunzima kakhulu., iingenelo zemigca ephezulu zichasene nje.Ngoko ke, kwiindawo ezingenazo iimfuno ezikhethekileyo, i-wiring ye-low-voltage ithatha indlela yomgca ophezulu.

Imigca ye-low-voltage overhead ngokuqhelekileyo iyenziwa ngeepali zokhuni okanye iipali zesamente ukwenza iipali zefowuni, kwaye iibhotile ze-porcelain zisetyenziselwa ukulungisa iingcingo kwiingalo ezinqamlezileyo zeepali.Umgama phakathi kwezibonda ezimbini malunga ne-30 ~ 40M kwintendelezo, kwaye inokufikelela kwi-40 ~ 50M kwindawo evulekile.Umgama phakathi kweengcingo ngu-40 ~ 60 cm.Ukumiswa komgca kufutshane kangangoko kunokwenzeka.Kulula ukugcina kunye nokulungiswa.

Ibhokisi yokuhambisa kwindawo yokwakha

Iibhokisi zokusasaza kwiindawo zokwakha zinokuhlulwa zibe ziibhokisi zokusasaza ngokubanzi, iibhokisi zokuhambisa ezisisigxina kunye neebhokisi zokuhambisa ezihambayo.

Ibhokisi yokuhambisa ngokubanzi:

Ukuba i-transformer ezimeleyo, i-transformer kunye nebhokisi enkulu yokusabalalisa emva kokuba ifakwe yi-bureau yokunikezelwa kwamandla.Ibhokisi eliphambili lokusabalalisa lixhotyiswe nge-low-voltage circuit breaker, iimitha ze-watt-yure esebenzayo kunye ne-reactive, i-voltmeters, i-ammeters, i-voltage transfer switch, kunye nezibane zesalathisi.I-wiring yomgca wesebe ngalinye lendawo yokwakha kufuneka iqhagamshelwe kwibhokisi yokuhambisa isebe emva kwebhokisi enkulu yokuhambisa.Ukuba i-pole-mounted transformer, iibhokisi ezimbini zokusabalalisa zifakwe kwi-pole, kwaye indiza ephantsi yebhokisi ingaphezulu kwe-1.3m ukusuka emhlabeni.I-DZ series i-low-voltage circuit breakers isetyenziswa kwibhokisi yokuhambisa.I-breaker circuit iyonke ikhethwe ngokuhambelana nomlinganiselo okhoyo we-transformer.Umgca wesebe ngalinye ulawulwa ngumqhekezi wesiphaluka esinomthamo omncinci.Umthamo we-circuit breaker ukhethwa ngokuhambelana nobuninzi obulinganisiweyo bangoku besiphaluka.Ukuba i-current incinci, kufuneka ikhethe ukutshintshela ukuvuza (umthamo ophezulu wokutshintsha ukuvuza yi-200A).Inani labaqhekezi beesekethe kufuneka libe sisinye ukuya kwisibini ngaphezu kwenani lamasebe ayiliweyo njengamasebe axhasayo.Ibhokisi yokuhambisa indawo yokwakha ayixhotyiswanga ngoku kunye ne-voltmeters yokuhlola.

Ukuba akusiyo i-transformer ezimeleyo, kodwa i-transformer yasekuqaleni isetyenzisiweyo, ibhokisi yokusabalalisa enkulu kunye nebhokisi yokusabalalisa i-shunt idibeneyo, kwaye iimitha ze-watt-yure esebenzayo kunye neyongezelelweyo yongezwa.Ukuqala ukusuka kwibhokisi enkulu yokusabalalisa, umgca wangemva wamkela i-TN-S inkqubo ye-five-five-five system, kunye negobolondo yensimbi yebhokisi yokusabalalisa kufuneka idibaniswe nokukhusela i-zero.

Ibhokisi yokuhambisa ezinzileyo:

Ngenxa yoluhlu lweentambo ezininzi ezibekwe kwindawo yokwakha, inkqubo yokunikezelwa kwamandla ithatha uhlobo lwe-radial, kwaye ibhokisi nganye yokusabalalisa esisigxina yindawo yokugqibela yeli sebe, ngoko ibekwe ngokubanzi kufuphi nezixhobo zombane zeli sebe.

Igobolondo yebhokisi yombane yokusabalalisa okusisigxina yenziwe ngeplate yentsimbi encinci, kwaye phezulu kufuneka imvula.Ukuphakama kwebhokisi lebhokisi ukusuka emhlabeni kukhulu kune-0.6m, kwaye intsimbi ye-angle isetyenziswe njengenkxaso yomlenze.Kuphela i-200 ~ 250A yokutshintsha okuphambili, usebenzisa i-switch yokuvuza e-four-pole, umthamo ngowona mgangatho uphezulu wangoku wezixhobo zombane kwibhokisi, ngokuqwalasela ukuguquguquka, unokuyilwa ngokwemiqathango esisiseko yezixhobo ezahlukeneyo ezisetyenziswa kwindawo yokwakha. , njengokuqwalasela ukuba ibhokisi nganye inokudibaniswa ne-crane tower okanye i-Welder.Iinguqu ezininzi ze-shunt zifakwe emva kokutshintsha okuphambili, kunye neenguqu ezine zokuvuza kwee-pole nazo zisetyenzisiweyo, kwaye umthamo udibaniswa ngokweenkcukacha zezixhobo zombane eziqhelekileyo.Ngokomzekelo, umtshintshi oyintloko usebenzisa i-200A yokuvuza, kunye namasebe amane, i-60A ezimbini kunye ne-40A ezimbini.Izibuko elisezantsi le-shunt switch kufuneka lixhotyiswe nge-porcelain plug-in fuse njengendawo ecacileyo yokuqhawula kwaye isetyenziswe njengetheminali yocingo lwesixhobo.I-port ephezulu ye-fuse idibaniswe kwi-port engezantsi yokutshintsha ukuvuza, kwaye i-port esezantsi ayinalutho kwi-wiring yezixhobo.Xa kuyimfuneko, ukutshintshwa kwesigaba esisodwa kufuneka kufakwe kwibhokisi, ilungele ukusetyenziswa kunye nezixhobo zesigaba esisodwa.

Njengesiphelo somgca wesebe, ukwenzela ukuqinisa ukuthembeka kokukhuselwa komgca ongathathi hlangothi.Ukuphindaphinda ukusekwa kufuneka kwenziwe kwibhokisi nganye yokuhambisa esisigxina.

Emva kokuba ucingo lufakwe kwibhokisi, umgca we-zero osebenzayo uqhagamshelwe kunye nebhodi ye-terminal, umgca wesigaba uqhagamshelwe ngokuthe ngqo kwi-port ephezulu yokutshintsha ukuvuza, kwaye umgca okhuselayo ongathathi hlangothi unqanyuliwe kwibholiti yokumisa kwiqokobhe ibhokisi yokuhambisa kwaye isekelwe ngokuphindaphindiweyo.Emva kwebhokisi yokusabalalisa Umgca wokukhusela u-zero uxhunyiwe yonke into kule bolt.

Ibhokisi yokuhanjiswa kweselula:

Ifomati yebhokisi yokuhanjiswa kweselula iyafana naleyo yebhokisi yokuhambisa esisigxina.Idityaniswe kwibhokisi yokuhambisa esisigxina kunye nentambo yerabha eguquguqukayo kwaye ihanjiswe kwindawo ekufutshane kangangoko kunokwenzeka kwisixhobo sombane, njengokusuka kumgangatho osezantsi ukuya kumgangatho wokwakha ongaphezulu.Kukho kwakhona ukutshintshwa kokuvuza kwibhokisi, kwaye umthamo uncinci kunebhokisi esisigxina.Ukutshintshwa kwesigaba esinye kunye nesokethi kufuneka kufakwe ukubonelela umbane wesigaba esisodwa kwisigaba esisodwa sombane.Igobolondo yensimbi yebhokisi yokusabalalisa kufuneka idibaniswe nokukhusela i-zero.