Kwiindawo zemveliso yemizi-mveliso, ukhuseleko lokugcinwa kwezixhobo zombane kunye nokugcinwa kwenkqubo yokusasazwa kwamandla zezona zinto ziphambili kwimveliso yokhuseleko lweshishini.ILOTO (Ukutshixa/Ukutsalwa kwempahla)Inkqubo, equka ukutshixa nokuthega ukuvimba amandla ayingozi ombane nokuthintela ukusetyenziswa gwenxa kwee-circuit breakers, "yindlela ephambili yokuzikhusela" yokukhusela ukhuseleko lomntu lwabasebenzi nokuthintela ukucinywa kombane. Ngokwedatha, ngaphezulu kwesiqingatha seengozi zokugcinwa kombane zinxulumene nokungabikho okanye ukuphunyezwa okungafanelekanga kwenkqubo ye-LOTO. Phakathi kwazo, iingozi ezibangelwa kukungasebenzi kakuhle kwee-circuit breakers, ezifana nokutshayiswa kombane, ii-short circuits zezixhobo, kunye nemililo, zibangela inani elikhulu. I-circuit breaker lock, njengesixhobo esiphambili sokutshixa sokwahlula umthombo wamandla ombane kwinkqubo ye-LOTO, inxulumene ngokuthe ngqo nokukhetha okusemgangathweni kunye nokusetyenziswa ngokuchanekileyo kweentlobo ezahlukeneyo zee-circuit breakers kwaye ngumxholo ophambili ekufuneka iingcali zokhuseleko lwemizi-mveliso kunye nabasebenzi bombane bawazi. Eli nqaku liza kubonelela ngohlalutyo oluneenkcukacha kunye nokwaziswa kweentlobo ezahlukeneyo zee-circuit breakers ngokwembono ye-LOTO, kunye neenkqubo zokutshixa, kwaye liphendule imibuzo eqhelekileyo yemizi-mveliso ukunceda amashishini ukuba alungelelanise ukuphunyezwa kwenkqubo ye-LOTO kwaye aqinise umgca wokhuseleko lombane wemizi-mveliso.
Ngezantsi, ndiza kuhlalutya, ndingenise, kwaye ndibonelele ngeenkqubo zokutshixa kwiintlobo ezahlukeneyo zee-circuit breakers ngokwembono yobungcali ye-LOTO.
I. Ii-Small Circuit Breakers
Ii-circuit breakers ezincinci zezona zixhobo zombane ezikhuselayo ezisisiseko kwiinkqubo zokusasazwa kwamandla emizi-mveliso. Zisetyenziswa kakhulu ekukhuseleni umbane omninzi kunye nokhuseleko lwe-short-circuit, ezinobukhulu obuncinci, amandla okuqhekeza aphakathi, kunye nokusebenza okulula. Zezona zinto ziphambili zokusasazwa kwamandla kwiindawo zokusebenzela zoshishino, iibhokisi zokusasazwa, kunye nezixhobo ezincinci. Kwimisebenzi ye-LOTO, ii-circuit breakers ezincinci zisebenza njengendawo ephambili yokwahlula amandla ombane kwicala elingaphambili. Ukuba azitshixwanga ngokwemigaqo, zinokubangela ukuba izixhobo zokugcina ezisezantsi zisebenze ngequbuliso ngenxa yokuba abasebenzi bavala ngempazamo i-circuit breaker, nto leyo ekhokelela kwiingozi ezifana nokutshona kombane, umonakalo wezixhobo, njl. Ke ngoko, ukutshixa ngokomzimba kufuneka kufezekiswe ngee-locks ezikhethekileyo ukuze kuphunyezwe iimfuno zokwahlulwa kwamandla e-LOTO.
Iimpawu eziqhelekileyo zee-small circuit breakers:
⑴. Ezasekhaya: CHINT, DELIXI, PEOPLE, TENGEN, Nader, njl. ⑵. Ezangaphandle: Schneider Electric, ABB, Siemens, Eaton, Legrand, njl.
a. Iimeko zesicelo:
⑴. Ukukhuselwa kwemigca kunye nokwahlulwa kwamandla kwiibhokisi ezincinci zokusasazwa kunye neebhokisi zokulawula izixhobo kwiindawo zokusebenzela zoshishino;
⑵. Ukugcinwa kweenkqubo zokusasazwa kwamandla aphantsi kwiindawo zeeofisi kunye nezibonelelo ezincedisayo zoshishino;
⑶. Ukugcinwa kweesekethe ezincinci zamasebe kunye neesekethe zombane zezixhobo ezichanekileyo kwimigca yemveliso ezenzekelayo.
II. Umqhekezi weSekethe yeTyala eliMoluliweyo
Isixhobo sokwaphula iisekethe esibunjiweyo sinomsebenzi wokukhusela ukugqithisa, i-short circuit, kunye nokukhusela umbane ongaphantsi kwamandla. Sinamandla okuqhekeza aqinileyo kunye noluhlu olubanzi lwamandla akhoyo. I-enclosure yenziwe ngezinto zokukhusela i-arc, ezinokuthintela ngempumelelo ukuvezwa kwe-arc. Liyinxalenye ephambili yenkqubo yokusasazwa kwamandla kushishino kwaye isetyenziswa kakhulu ekukhuseleni nasekulawuleni izixhobo ezinamandla aphezulu, ukusasazwa kwamandla ombane kwindawo yokusebenzela, kunye nemigca ye-trunk yokusasazwa kwamandla.
Njengendawo ebalulekileyo yokwahlulwa kwamandla ombane kwiindawo zoshishino, i-molded case circuit breaker idibanisa umthombo wamandla wezixhobo ezinamandla aphezulu. Ukusetyenziswa gwenxa kokuvala iswitshi kuya kubangela ukukhululwa okukhulu kwamandla ombane, okubangela ukwenzakala okukhulu komntu kunye nomonakalo wezixhobo. Ke ngoko, ngexesha lemisebenzi ye-LOTO, kuyimfuneko ukufikelela kwisitshixo esikhuselekileyo ngokusebenzisa iilokhi ezinzima ezizinikeleyo kwaye udibanise ukhuseleko oluninzi ukuqinisekisa ukwahlulwa kwamandla okusebenzayo.
III. Isakhelo seSekethe esiPhulayo
I-frame circuit breaker, eyaziwa ngokuba yi-universal circuit breaker, inomlinganiselo omkhulu wamandla, amandla okuphazamisa anamandla kakhulu, kunye nemisebenzi yokukhusela epheleleyo. Ingasetyenziswa ngombane nangesandla kwaye isetyenziswa kakhulu njengeswitshi ephambili kwinkqubo yokusasazwa kwamandla kwiinkampani zoshishino. Yinxalenye ephambili yolawulo kunye nokhuseleko lwenethiwekhi yonke yokusasazwa kwamandla kwimizi-mveliso. I-frame circuit breaker ilawula umthombo wamandla ombane we-workshop yonke okanye indawo yefektri. Ukusebenza kwe-LOTO (Lockout-Tagout) kwiphaneli ye-LOTO yeyona nto iphambili kukhuseleko lombane kwimizi-mveliso. Ukuba isetyenziswa gwenxa, inokukhokelela ekucinyweni kombane okukhulu, umonakalo kumaqela ezixhobo, okanye nakwiingozi ezinkulu zokhuseleko lomntu. Ke ngoko, kuyimfuneko ukulandela ngokungqongqo inkqubo epheleleyo ye-LOTO kwaye usebenzise ii-locks ezinamandla aphezulu ukuze kufezekiswe ukwahlulwahlulwa okuninzi ngokomzimba, kwaye kuphunyezwe umgaqo ophambili othi "ngubani otshixayo, ngubani ovulayo".
a. Iimeko zesicelo
⑴. Iswitshi ephambili yokwahlulwa kwamandla kwigumbi eliphambili lokusasazwa kwezityalo zoshishino kunye neepaki ezinkulu zoshishino;
2. Ukugcinwa kwenkqubo yokusasazwa kombane kumashishini amakhulu emizi-mveliso afana nemizi-mveliso yesinyithi, umbane, kunye neekhemikhali;
2. Iiswitshi zolawulo lokusasazwa eziphambili zemigca emikhulu yemveliso ezenzekelayo kunye neefektri ezikrelekrele zemisebenzi yeLOTO.
Ixesha leposi: Matshi-17-2026
