Ukutshintsha kwamandla ombane aphantsi (i-low voltage breaker circuit) ikwabizwa ngokuba yi-automatic air switch okanye i-automatic air circuit breaker.Idibanisa ulawulo kunye nemisebenzi emininzi yokukhusela.Xa umgca usebenza ngokuqhelekileyo, usetyenziswa njengokutshintsha kwamandla ukuvula nokucima isiphaluka.Xa ivuliwe, ilingana necandelo locingo olunamandla.Xa isiphaluka sinesekhethi emfutshane, i-overload kunye nezinye iimpazamo, inokunqumla ngokuzenzekelayo isiphaluka esiphosakeleyo.Ngoko ke, i-low-voltage switch inokukhusela isiphaluka kunye nezixhobo.
Inkcazo yezixhobo zombane eziphantsi kwe-voltage: ichazwe ngokobungakanani bombane, i-voltage elinganisiweyo kwi-AC kufuneka ibe ngaphantsi kwe-1200V, kwaye i-voltage ye-DC kufuneka ibe ngaphantsi kwe-1500V.
Ukusetyenziswa kokutshintsha kwe-low-voltage kunokwenza inkqubo yamandla iqhube ngokuzinzileyo kwaye ikhuselekile.Ulwahlulo oluthile lulolu hlobo lulandelayo:
Ngokutsho kwesakhiwo sangaphakathi esahlukileyo se-low-voltage switch, inokwahlulwa ibe yi-disconnect switch kunye ne-grounding switch.Umgaqo wolawulo jikelele ulawulwa yi-fuse yokutshintsha.Ngokuxhomekeke kwindlela yokwahlula, ingasetyenziselwa ukutshintshwa komthwalo kunye nokutshintsha kwe-fuse.Ngokweendlela ezahlukeneyo zokuvala umtshintshi, inokuphinda ihlulwe ibe yizitshixo ezivulekileyo nezivaliweyo.Kwinkqubo yokhetho, kuxhomekeke kwimeko yangempela.
I-low-voltage yokwahlula iswitshi luhlobo lokutshintshela lodwa.Yeyona iswitshi isetyenziswa kakhulu kwi-high-voltage switchgear.Idlala indima ebaluleke kakhulu ekusekweni nasekusebenzeni ngokukhuselekileyo kwezixhobo zombane.
Xa uqhawula umbane wangoku, i-low-voltage isolation switch ayikwazi ukudlula ixabiso layo langoku lokuqhawula elivumelekileyo.Ukutshintshwa kwe-low-voltage yodwa yesakhiwo esiqhelekileyo akuvumelekanga ukusebenza kunye nomthwalo, kuphela ukutshintshwa kwe-low-voltage yokwahlulahlula okuxhotywe ngamagumbi okucima i-arc kunokuvumela inani elincinci lomsebenzi ongaqhelekanga womthwalo.Kuyafaneleka ukuba uqaphele ukuba umbane wesigaba sesithathu sesetyhula esifutshane somgca apho i-low-voltage isolation switch ikhoyo akufanele idlule amaxabiso achaziweyo aguquguqukayo kunye ne-thermal.
Umsebenzi wokutshintsha umbane osezantsi wokwahlulahlula:
1.I-isolation switch ingaba nefuthe elihle lokugquma, ukuze yonke isekethe ikhuseleke kwaye ikhuseleke, kwaye abasebenzi bolondolozo okanye abasebenzi banokulungisa isekethe ngexesha.
2.Ukongezelela, i-low-voltage isolation switch inomsebenzi wokutshintsha isiphaluka, kwaye ezo zitshintshi zisetyenziswa ngokubanzi kwiifektri zombane.Umzekelo ulolu hlobo lulandelayo: umgca wokuvelisa kufuneka utshintshe ukucwangciswa kweenkcazo zemveliso okanye iimodeli.Ngeli xesha, ukutshintshwa kwe-isolation kungatshintsha indlela yokusebenza yesekethe ngokuqhawula ukunikezelwa kwamandla, ukwenzela ukwandisa inzuzo yesiphaluka.
3.Ukongezelela kule misebenzi ingentla, i-low-voltage isolation switch inokudibanisa nomgca.Kwizixhobo eziphantsi kwe-voltage yezindlu zokuhlala okanye izakhiwo eziqhelekileyo, ukutshintshwa kwe-isolation kunciphisa ingozi efihliweyo yeengozi zokhuseleko ngokusebenza okungekho ngesandla.Oku kwenza ubomi bethu bube lula ngakumbi kunye nokusebenza kokuhanjiswa kwamandla kunye nokuhanjiswa.
Umtshini wokumisa inguqu esetyenziselwa ukudibanisa okanye ukunqumla isiphaluka sokumisa izixhobo zombane kunye nokunikezelwa kwamandla.Umsebenzi wayo ophambili kukuthintela ukungaphumeleli kwesiphaluka esifutshane okanye ukuqhagamshelwa kwamandla ngengozi kwezixhobo zombane, ukukhusela ukhuseleko lomntu kunye nokusebenza ngokukhuselekileyo kwezixhobo zombane.Iindima ezibalulekileyo zichazwe ngolu hlobo lulandelayo:
1. Ukhuseleko lwenkqubo
Kwiinkqubo zamandla, iimpazamo zomhlaba ziyinto eqhelekileyo.Xa impazamo yomhlaba iyenzeka kwisixhobo sombane, kuya kukhokelela ekunciphiseni ukusebenza kombane kwezixhobo, kwaye kulula ukubangela iziphumo ezibi njengomlilo.Ngeli xesha, ukutshintshwa kwesiseko kunokukhawuleza ukunqumla isiphaluka sokumisa, ukwenzela ukuba ugweme ukwandiswa kweempazamo kunye nokukhusela ukusebenza okukhuselekileyo kwezixhobo zombane.
2. Ukhuseleko lomntu siqu
Xa ukuvuza kwenzeka kwi-casing yezixhobo zombane, isiphaluka somhlaba yindlela eyingozi kakhulu enokubangela iingozi ezifana nokulimala komntu okanye ukufa.Umtshini wokumisa umhlaba unokunqumla isiphaluka sokumisa ngexesha xa kukho ukuvuza kombane, ukwenzela ukuba uthintele umsinga ukuba udlule emzimbeni womntu kwaye uqinisekise ukhuseleko lomntu.
3. Gcina izixhobo
Kwinkqubo yokugcinwa komgca okanye izixhobo kunye nokulungiswa ngokutsha, ngokubanzi ukwenzela ukuba kuqinisekiswe ukhuseleko lwabasebenzi, uqhagamshelo phakathi kwesixhobo kunye nenkqubo yombane kufuneka lunqunyulwe kuqala.Ngeli xesha, ukutshintshwa kwesiseko kunokunqumla kalula isiphaluka somhlaba ukuze kuqinisekiswe ukhuseleko lwabasebenzi kunye nokugcinwa okuqhelekileyo kwezixhobo.
Kwiinkalo ezahlukeneyo, inkcazo yokutshintsha kwamandla aphantsi kuya kwahluka.Nangona kunjalo, imisebenzi ephambili yokutshintsha kwe-low-voltage yile: ukutshintsha, ukukhuselwa, ukufumanisa ukulawula kunye nokulungelelanisa.
Ixesha lokuposa: Jun-26-2023