Ukuthi MCCB Kusinika Ukuvikela Kwakho Okwesikhathi Sokuphakeme Nokufinyelela Kwakho Okwesikhathi Sokuphakeme Kwezinhloso Zokusebenza?

Izinkambo ezimbili zokulinda kuzo zonke ekuhambeni kwesikhumba esifanayo: Phakathi kokulinda kwezinhlangano zesayensi

Konke isistimu sokusawula kwamanzi esayensi sibhekene nezinto ezimbili zokulinda kwezinhlangano: izilungelo ezithile zokubusa okuzosindisela amakheli ngokusha noma izilungelo zokubusa okuzoyisha amandla okukhulu ngokusha emizuzwana yemibili. I-molded case circuit breaker — i- Mccb kufounda kuswitchboards, kuspanelboards, nakumotor control centers emhlabeni wonke — isebenza ngokwesibini ngendlela eyodwa yendawo encane. Ukuziqonda ukuthi indlela yokusebenza kwemithombo yokuqhubeka kuyisibonelo sokuthi le ndawo iyiphakathi yezinkampani zokuhlinzeka kwezinye zokuphatha izinkinga zokugcina phansi kokugcina kusukela ku-16 A ku-1600 A.

Ukuphatha okuphakathi kwe- Mccb isebenza ngamathegi amabili okuvumela ukuthi amagama ayisibini aqhubeka ngokwesibini ngokubhekana nekhona lokukhupha. Umphathi wokuthembeka ukuhlinzeka ngokwesibini ngokusebenza kwe-bimetallic strip othambekile uma kuchazwa ngokuchaza kwezimali. Umphathi wokuthembeka wokugcina ngokwesibini ngokusebenza kwe-electromagnetic coil oyinika umthelela wokukhupha ngokushesha uma kuchazwa kwezimali kuyaphikisa ikhona elichazwe. Amasistimu amabili asebenza ngokwesibini kodwa aqhubeka ngokubhekana nekhona lokukhupha.

Ukuphatha Kwesithembeko: Isistimu Yokuhlinzeka Ngokwesibini

Indlela Yokusebenza Kwe-Bimetallic Strips Ukuhlinzeka Ngokwesibini

Isiqulethi sesiliva siphakathi kwezimbili zezinto ezizimele nezinkambo zokuphakama kwesikhathi sokuphakama kwezinto ezizimele ezihlukene — okuhle kakhulu iziliva neziliva zocwecwe. Uma umsila wokulawula uphuma noma uphuma emuva kwalokho, ukuphakama kwesiliva kusiza ekuphakamiseni isiqulethi, futhi ukuphakama okuhlukene kusiza ekubendiseni isiqulethi ngokuphakathi kokubendisa isiqulethi esikhundleni sokulawula.

Ukuhlanganisa phakathi kwe-umoya nokuhamba kwesikhathi kuyasebenza ngokusebenzisa isikhathi sokuphakama okuvamile kwi-IEC 60947-2. Kuma-113% yomoya wesifundo, isikhundla asisikhiwe ngaphandle kwehora yokuqala. Kuma-145%, kufanele isikhundla sikhiwe ngaphakathi kwehora yokuqala. Lokhu kuhlanganisa okuphakama okuvamile kuyahlangana nokuphakama kweziliva zocwecwe — lokhu ke okufanele kusikhiwa ngalo Mccb kushikwa.

Isikhathi sokuphakama kwenkathi kusenza ubuchule. A Mccb kufakwa kumkhumbi ophezulu kwesikhathi sokuphakamisa kwe-55°C kuzokhulula ngokwesikhathi esingaphansi kokuthi kuyatholakala ngokwesibonelo sokugcina ngoba isitsha sesikhombisa siphinda kusuka kusikhathi esiphakeme kakhulu. Kumaqondo okuphakeme kwezinye izinsizakalo, izinkundla zokukhulula ezithunywa ngemikroprosesa zokubhalwa kwezinhlobo zokuphakama ziyasusa le ndlela yokukhulula.

Ukuvikela Ngokomaginethe: Ukuphindezela Okuhambisana Nokukhulula Kwesikhathi Sokusha

Ithunywa lokukhulula lokomaginethe liwumkhumbi owunqulungwane lwesikhombisa esifuna ukuguqula. Ngokwesikhathi sokusebenza esinormali, umkhumbi wokumaginethe awukwazi ukuphinda ukuphuma kwezindawo zokuphakama zokuthunywa. Uma kufakwa kwezinye izinto ezingaphezulu kwezinkundla zokukhulula kwe-5 ku-10 kwezinkundla zokukhulula zokuphakama, umkhumbi wokumaginethe uguqula isikhombisa ngokwesikhathi esingaphezulu kwezindawo zokuphakama ngokwesikhathi esingaphezulu kwezindawo zokuphakama ukukhulula isikhombisa ngokwesikhathi esingaphezulu kwezindawo zokuphakama — le nto iyasebenza ngokwesikhathi sesikhathi sokuphakama kwe-5 ku-10 milisekondi.

Lesi sivinini sibalulekile ngoba amandla esekethe elifushane akhuphuka ngokushesha okukhulu emibuthanweni enokuvimbela okuphansi. Uhambo lwamagnetic luhlukanisa isekethe ngenkathi i-fault current isakhuphukela esiqongweni sayo esibonakalayo, ikhawulela amandla okuvumela (I2t) okufanele imishini esezansi imelane nawo. Ngokwe-IEC 60947-2, iziphazamisi zamandla ezivimbela amandla ezigaba 2 nezigaba 3 zinikeza amazinga aphakeme ngokuqhubekayo wokukhawulelwa kwamanje.

Amadivayisi okuhamba ngogesi amelela ukuvela kwezinto ezingaphezu kwamandla kazibuthe. I-microprocessor iqhubeka isampula amandla kagesi ngokusebenzisa ama-transformer kagesi angaphakathi, ibala amanani e-RMS angempela. Ingasebenzisa isikhathi eside sokubambezeleka kokulayishwa ngokweqile, isikhathi esifushane sokubambezeleka kokuhlanganiswa okukhethiwe, ngokushesha kwephutha eliseduze, nokuvikelwa kwephutha lomhlaba konke kusisetshenziswa esisodwa. Ijika lokuhamba liyalungiswa ngokusebenzisa izinkinobho ze-DIP noma isikhombimsebenzisi sedijithali, okuvumela uhlaka olulodwa lwe-breaker ukuba lusebenzele izinhlelo zokusebenza ezahlukahlukene. I-Hongxin Intelligent Technology Mccb izilinye zezinhloso zokuthengisa zihlala nezinhloso zokuphakamisa kanye nezinhloso zokubhala ngendlela elektroniki.

Ukuguqula kwesikhangeli esikhulu eMiddle East

Indlu yezisigaba zesibhozo esingaphansi kwe-Dubai yasithola ukuthi isibhozo sasithwasa ngokungafanelekile kwenhlangothi yakhe enkulu ye-1600 A Mccb ngemini yasezulu lomkhosi lwezinsuku zomnyaka lapho izinhloso zokuhlisa amanzi zonke zazihamba ngokuhambisana. Umugqa wabhalwe ngokwesibonelo ngama-1420 A — kusuka kumthwasa wokuthwasa — kodwa umthwasa wokuphakamisa wazithwasa ngoba umbhalo wokuphakamisa wokuzimela wabona ukuthi ubunzima bewa 48°C ngaphandle kokuvulwa komkhosi okufanele.

Kun instead yokuguqula umkhawuli wokuphakama nokuhambisa konke okusezantsi kwezihlombe — ukuguqula okukhulu kakhulu kwezihlombe — isithunzi sesikhundla sokugcina sasebenzisa i-Hongxin Intelligent Technology ukuguqula isikhundla sokuphakama esisodwa ngokwesibonelo nesikhundla sokuphakama esenziwe ngokusebenzisa i-ekhtronikhi esinikeza ukuthinteka kwesilinganiso sokugcina kwezinye izindawo. Isikhundla sokuphakama esenziwe ngokusebenzisa i-ekhtronikhi sasambela isilinganiso sokugcina kwezinye izindawo ngokusebenzisa isensha esithunyelwe kumkhawuli, futhi sasusuma isilinganiso sokuphakama kwezinye izindawo ngokufanayo. Emva kokuguqula, umkhawuli wokuphakama wabona ngokuphakamisa isilinganiso sokuphakama sokubili 1420 A ngaphandle kokuphakama, ngakho ke wabona ukuthinteka kwezinye izindawo ngokulinganisa isilinganiso sokuphakama sokubili.

Izindlela zokukhetha nokubhekana

Isayizi yeframe, isilinganiso sokuphakama, nokukhetha isikhundla sokuphakama kuzokubhekana ngokujabulisa isilinganiso sokuphakama Mccb kubunye ubuchwepheshe. Usizo lwesikhumba sesikhumba sisho izindawo zokuphakanyiswa kanye nesilinganiso sezinkambo ezingenayo — isikhumba se-250 A nesikhumba sekukhanya se-200 A sikhombisa isikhumbi esisodwa. Isilinganiso sokuvula kufanele lisikhulu kunezinkambo zokuvula ezitholakala ekuphakanyiseni; ukuthi isikhumbi sikhulu kakhulu kule ndawo kusho ukuthi isikhumbi singasikhiqise isiphumo ngokuphelele.

Ukuvumela kokuvulwa kusobala ukuthi kuphela isikhumbi esisodwa esihambisana nesiphumo esivulwa, okuzosindisa indawo yokuvulwa. Lokhu kufuna ukuchaza izinhlobo zezintambo zemvula: isikhumbi sesodwa isilinganiso sokuvulwa kufanele sibe phansi kwesikhumbi sesodwa isilinganiso sokuvulwa kwezinsuku ezincinci. Izikhumbi zesilungu zokuvulwa zasezinye zisindisa lokhu ngokuthi zinokuvulwa ngokwesikhumbi sokuvulwa kwezinsuku ezincinci okusuka ku-0.05 ku-0.5 secondi nesikhumbi sokuvulwa kwe-I²t.

Imibuzo Evame Ukubuzwa

MCCB ibonakala kanjani futhi iphi indawo eyasebenzela kuyo?

UMCCB uyisibonelo se-Molded Case Circuit Breaker. Lezi zixhobo zixolisa izikhundla zesikhundla esincane ku-1600 A kwezikhundla zokusebenza, kwezikhundla zokusebenza kwezindawo zokusebenza, nokwezikhundla zokulawula imotolo. I-molded case — okukhona ngokuvamile i-glass-filled polyester noma i-thermoset composite — isinika ukulinganisa nokubamba isithunzi sokusebenza ngaphakathi kwesikhundla xa kususwa umoya wokuphuma.

UMCCB ubahlukena njani ne-MCB?

UMCB (Miniature Circuit Breaker) uyasebenza ku-125 A nesikhundla esisodwa esingasoloko esisodwa ngokwesikhundla esisodwa esisodwa. UMCCB uyasebenza ku-16 A ku-1600 A, uyathola izinhlelo zokususwa ezinokuthinteka kwezinhlelo ezingabi ngezinye, izinhlelo zokususwa eziningi (ku-150 kA ngaphezu kwe-10-25 kA kwe-MCB), futhi uyavumela izinkambo ezithile njengezinkambo zokususwa kanye nezinkambo zokusebenza. I-Hongxin Intelligent Technology iyathumela izinhlelo zezinto zombili.

Ngikwazi ukusebenzisa i-MCCB ukuxolisa imotolo?

Am-MCCB athiyo-ithemperetha ne-magnetic ayakwamukela izinhlangano zemotolo, kodwa ukususa kwemotolo kuyakwenzeka ngokushesha — okufanana nokuthi kubili ku-6 ku-8 kwesikhathi sokusebenza kwe-full-load — kungabangela ukuthi am-MCCB ayathuluzwa ngokushesha uma isheshini yokuqala yokuthuluzwa ayasethiwe ngokuphelele. Am-MCP (amotolo okukhanyisa izinhlangano zemotolo) noma am-MCCB onamathuba okuthatha isheshini yokuqala yokuthuluzwa ayasebenza kahle kunamathuba okuthuluzwa okugcina ngokuphelele kumazinhlangano zemotolo.

Kuphi kakhulu kufanele am-MCCB abhalwe?

I-NFPA 70B ibizwa ukuthi am-MCCB abhalwe ngokuvamile ngomnyaka — ukuthi abhalwe ngokwamanzi ukuqinisekisa ukuthi umechanisimu uyasebenza ngokwanele. Ukubhalwa kwesifunda sokubhalwa phakathi kwe-phase noma kwi-ground kufanele kwenziwe ngokuphinda kabili ku-3 ku-5 iminyaka. Am-MCCB angalokho abhalwe ukuthi abeke isibindi esikhulu kufanele kubhalwe kabefore ukubhalwa kwawo futhi.

Yiziphi izinkinga ezinkulu zokuthuluzwa kwe-MCCB ngokushesha?

Izihluzi zokugqibela zezilayili zizokwenzela ukuthi kubheke izinkampani zokuphatha ukuphatha, okuzokubangela ukuthi kubhekwe ngokungafanele ukuthi kubhekwe ngokuphatha. Amadoda amanquma asebenzisa amandla angaphansi kwezindawo ezinamandla (amandla angaphansi) ayakwenzela ukuthi izihluzi zokuphatha zizobhekwa ngokungafanele uma izihluzi zizobhekwa ngokuthi ziyisilinganiso esingaphansi kwe-RMS esingaphansi kwe-RMS. Izihluzi ezingaphansi kwezindawo zokuphatha (izihluzi zokuphatha, izihluzi zokuphatha, izihluzi zokuphatha) zizokuphatha ngokuphatha kwesihluzi ngokuphatha kokuphatha kokuphatha.

Izihluzi zikho nini?

Izihluzi eziningi zivame ukuba ziyizihluzi zokuphatha ngokuphatha, izihluzi zokuphatha ngokuphatha, izihluzi zokuphatha ngokuphatha, izihluzi zokuphatha ngokuphatha, izihluzi zokuphatha ngokuphatha, izihluzi zokuphatha ngokuphatha, izihluzi zokuphatha ngokuphatha. Lezi zihluzi zizokufaka ngokuphatha kwesihluzi ngokuphatha kwesihluzi ngokuphatha kwesihluzi ngokuphatha kwesihluzi ngokuphatha kwesihluzi ngokuphatha kwesihluzi.