Molded Case Circuit Breaker

TheMolded Case Circuit Breaker (MCCB)ke lejoe la sekhutlo la polokeho ea motlakase ea sejoale-joale, e netefatsang hore lipotoloho tsa motlakase li sirelelitsoe ka bo eona maemong a kotsi joalo ka lintho tse ngata, li-circuits tse khutšoane le liphoso tsa fatše. E kentsoeng ka polasetiki e bōpiloeng e tšoarellang nako e telele, li-MCCB li etselitsoe ho sebetsa ka mokhoa o ts'epahalang le libakeng tse thata moo ho ts'ireletsoa le ho itšireletsa leroleng, mongobo le likotsing tse ling. Moralo oa tsona o kopaneng, o kopantsoeng le matla a mangata a sitisang, o li etsa hore li feto-fetohe le maemo, 'me e be tsa bohlokoa haholo lits'ebetsong tse fapaneng, ho tloha mecheng ea indasteri ho isa kabong ea motlakase oa khoebo, esita le lits'ebetso tsa motlakase tsa bolulo.

Sengoliloeng sena se hlahloba likarolo tsa bohlokoa, mekhoa le ts'ebeliso eaLi-MCCBs, ho totobatsa karolo ea bona ea bohlokoa ho ts'ireletso ea motlakase le ho tšepahala.

Molded Case Circuit Breaker ke Eng?

TheMolded Case Circuit Breaker (MCCB)ke mofuta oa sesebelisoa sa ts'ireletso ea motlakase se sitisang ho phalla ha metsi nakong ea maemo a sa tloaelehang a ts'ebetso. E kenngoe ka khetla ea polasetiki e bopehileng e sirelelitsoeng, li-MCCB li hahiloe ka thata ho sireletsa likarolo tsa kahare ho maemo a tikoloho joalo ka lerōle le mongobo ha li ntse li fana ka insulation ea motlakase.

Li-MCCB li etselitsoe ho:

• Khaotsa motlakaseha ho na le moroalo o mongata, o mokgutshwane, kapa phoso ya fatshe.
• Sebetsa ka letsohoho arola disekethe ka sepheo sa paballo kapa polokeho.
• Tšoara maqhubu a maholo, e leng se etsang hore e be tse loketseng tsamaiso ea indasteri le ea khoebo.

Tsa bonaboemo bo phahameng ba ho sitisae ba lumella ho thibela ka mokhoa o sireletsehileng maqhubu a phahameng a phoso, ho fokotsa kotsi ea tšenyo ea thepa ea motlakase le ho thibela mollo. Li-MCCB li tla ka boholo bo fapaneng le litekanyetso, li fana ka monyetla oa ho sebelisoa mefuteng e mengata ea lisebelisoa tsa motlakase.

Mokhoa oa Ts'ebetso oa li-MCCB

Li-MCCB li sebelisa mekhoa e 'meli ea mantlha ho lemoha le ho arabela maemong a sa tloaelehang a hona joale:tšireletso ea mochesoletshireletso ya makenete. Mekhoa ena e etsa bonnete ba hore MCCB e ka arabela ka katleho mefuteng e fapaneng ea liphoso, ebang li etsahala butle-butle (ho tlōla) kapa hang-hang (potoloho e khutšoanyane).

1. Mocheso oa Leeto la Mechanism

Thethermal elementho MCCB ke bimetallic strip e arabelang mocheso o hlahisoang ke nako e feteletseng ka nako e tsitsitseng. Ha motlakase o phallang ka har'a sekheo o ntse o eketseha ho feta boleng bo lekantsoeng, sekhahla sea chesa ebile sea kobeha. Hang ha sekhahla se kobeha ho ea sebakeng se itseng, se tsosa mochine oa leeto, se khaola phepelo ea motlakase.

Karabelo ena ea mocheso e etselitsoe ka ho khetheha ho sireletsa khahlanong leoverload maemo, moo motlakase o fetang boleng bo reriloeng empa o sa bake tšenyo hang hang. Mochine oa leeto la mocheso o lumella karabelo e liehang, ho etsa bonnete ba hore ho phahama ha nakoana ha hona joale (joaloka nakong ea ho qala ha li-motor) ha ho bake tšitiso e sa hlokahaleng. Leha ho le joalo, haeba mojaro o moholo o tsoela pele, MCCB e tla khoptjoa 'me e thibele ho futhumala ho feteletseng ha lithapo kapa lisebelisoa tse hoketsoeng.

2. Magnetic Trip Mechanism

Thentho ea makeneteea MCCB e fana ka tšireletso hang-hang khahlanong le li-circuits tse khutšoane. Nakong ea potoloho e khuts'oane, ho phahama ho hoholo ha maqhubu ho phalla ka har'a sekhechana. Ho phahama hona ho hlahisa matla a khoheli a matla hoo a ka khopang seqhetso hang-hang, se sitisa matla a hona joale pele a ka baka tšenyo e kholo.

Mochine oa leeto la makenete o bohlokoa bakeng sa ho itšireletsa khahlanong lelipotoloho tse khutšoane, e etsahalang ha ho e-na le tsela e tobileng e sa lebelloang ea motlakase, e fetang mojaro. Li-circuits tse khuts'oane li kotsi hobane li ka baka tšenyo e kholo ea lisebelisoa le ho hlahisa likotsi tsa mollo. Karabelo e potlakileng ea mochini oa maeto oa makenete oa MCCB o thibela hona joale ho fihla maemong a kotsi, ho sireletsa sistimi ea motlakase ka nepo.

3. Litlhophiso tsa Leeto tse Fetohang

Li-MCCB tse ngata li na le lisebelisoamaemo a fetohang a leeto, e lumellang basebedisi ho iketsetsa tshebetso ea sehahi ho finyella litlhoko tse khethehileng tsa tsamaiso ea bona. Phetoho ena e fana ka phetoho e kholo ho latela litekanyo tsa maeto a mocheso le a makenete.

Ka mohlala, lits'ebetsong tseo ho sebelisoang li-motor, motlakase oa ho qala o ka ba holimo haholo ho feta mokhoa o tloaelehileng oa ho sebetsa hona joale. Ka ho lokisa litlhophiso tsa maeto a mocheso, basebelisi ba ka thibela ho khoptjoa ho sa hlokahaleng ha ba ntse ba netefatsa hore sistimi e sirelelitsoe nakong ea ho jara nako e telele. Ka mokhoa o ts'oanang, ho lokisa litlhophiso tsa maeto a makenete ho lumella sekhechana ho arabela hantle ho lipotoloho tse khutšoane tsa matla a fapaneng.

4. Ts'ebetso ea Manual le ea Boiketsetso

Li-MCCB li etselitsoe bobelitataisoletshebetso e iketsang. Maemong a tloaelehileng, breaker e ka sebetsoa ka letsoho hobulela kapa tima li-circuits, ho etsa hore ho be bonolo ho etsa tlhokomelo kapa ho hlahloba mekhoa ea motlakase ka mokhoa o sireletsehileng.

Ha ho ka ba le phoso ea motlakase, MCCB e tla itsamaela, e khaole motlakase ho sireletsa sistimi. Motsoako ona oa ts'ebetso ea matsoho le ea othomathike e ntlafatsa ho feto-fetoha ha ts'ebetso, e lumellang tokiso e reriloeng le ts'ireletso e sa reroang ea liphoso.

5. Phapang e Pharalletseng ea Litekanyetso tsa Hona Joale

Li-MCCB li fumaneha kamefuta e mengata ea litekanyetso tsa hona joale, ho tloha tlase ho 10 amperes (A) ho ea holimo ho 2,500 A kapa ho feta. Mefuta ena e fapaneng e etsa hore e tšoanelehe bakeng sa lits'ebetso ho pholletsa le liindasteri le tikoloho e fapaneng, ho tloha meahong ea bolulo ho isa meahong e meholo ea indasteri.

Bokhoni ba ho khetha MCCB e nang le tekanyo e nepahetseng ea hona joale e tiisa hore motho ea senyang o fana ka tšireletso e tšepahalang ntle le ho khoptjoa ho sa hlokahale nakong ea ts'ebetso e tloaelehileng. Ho feta moo, li-MCCB li ka lekanyetsoa bakeng sa li-voltages tse fapaneng, ho kenyeletsoa li-voltage tse tlase (LV) le litsamaiso tsa motlakase o mahareng (MV), ho ntlafatsa ts'ebetso ea tsona e fapaneng.

Likopo tsa li-MCCBs

Ka lebaka la ho ikamahanya le maemo le tshebetso e phahameng, li-MCCB li sebelisoa ho pholletsa le mefuta e mengata ealiindasteri le tikoloho. Lisebelisoa tse tsebahalang haholo li kenyelletsa:

1. Mekhoa ea Liindasteri

Libakeng tsa indasteri, li-MCCB li bohlokoa bakeng sa ho sireletsa mechini e boima, li-transformer le lisebelisoa tse kholo tsa motlakase ho tsoa liphosong tse ka bakang tšenyo ea lisebelisoa, nako ea ho theoha kapa mollo. Li-MCCB tse nang le litekanyetso tse phahameng tsa hona joale le bokhoni bo phahameng ba ho sitisa li bohlokoa ka ho khetheha liindastering tse kang tlhahiso, merafo, oli le khase, le tlhahiso ea matla, moo lisebelisoa tsa motlakase li nang le meroalo e phahameng le maqhubu a ka bang teng a phoso.

2. Mehaho ea Khoebo

Meahong ea khoebo e kang litsi tsa mabenkele, liofisi le lipetlele, li-MCCB li phetha karolo ea bohlokoa ho netefatsa hore motlakase o ajoa ka mokhoa o sireletsehileng le o tšepahalang. Li-breaker tsena li sireletsa lits'ebetso tsa HVAC, mabone, li-elevator le lisebelisoa tse ling tsa bohlokoa tsa ho haha ​​ho tsoa ho meroalo le lipotoloho tse khutšoane, li thusa ho boloka ts'ebetso e tsoelang pele le ho fokotsa likotsi ho baahi.

3. Tšebeliso ea Bolulo

Leha litsamaiso tsa motlakase tsa bolulo hangata li sebelisa lisebelisoa tse nyane tse sirelletsang joalo ka li-miniature circuit breaker (MCBs), MCCBs ka linako tse ling li sebelisoa lits'ebetsong tse kholoanyane tsa bolulo kapa moo ho hlokahalang ts'ireletso e phahameng, joalo ka meahong ea lifolete kapa matlong a nang le meroalo e meholo ea motlakase (mohlala, motlakase. diteishene tsa ho tjhaja koloi). Li-MCCB li fana ka tiisetso e eketsehileng ea tšireletso ho tsoa liphosong tse matla tsa motlakase maemong ana.

4. Sistimi ea Matla a Tsosolositsoeng

Ha lits'ebetso tsa matla tse nchafalitsoeng joalo ka lits'ebetso tsa matla a letsatsi le moea li ntse li ata, li-MCCB li ntse li sebelisoa haholo ho sireletsa li-inverters, li-transformer le marang-rang a kabo ka har'a litsamaiso tsena. Bokhoni ba ho fetola litlhophiso tsa maeto bo lumella MCCBs ho amohela meroalo e fapaneng ea motlakase le maemo a tloaelehileng a mehloli ea matla e ka nchafatsoang.

5. Tšebeliso le Lisebelisoa

Li-MCCB li boetse li kentsoe lits'ebetsong tsa motlakase tsa maemo a holimo, ho kenyeletsoa marang-rang a kabo ea motlakase, litsi tse nyane, le meaho ea bohlokoa joalo ka lits'ebetso tsa lipalangoang le litsi tsa data. Mona, ba netefatsa ts'ebetso e tsoelang pele ea lits'ebeletso tsa bohlokoa ka ho sireletsa khahlanong le mefokolo ea motlakase e ka lebisang ho khaoha kapa ho senyeha ho hoholo.

Melemo ea Molded Case Circuit Breakers

Li-MCCB li fana ka melemo e mengata e li etsang khetho e ratoang bakeng sa ts'ireletso ea motlakase lits'ebetsong tse fapaneng:

1. Ho feto-fetoha ha maemo

Li-MCCB li na le mekhoa e mengata haholo ka lebaka la mefuta e mengata ea litekanyetso tsa hona joale le tsa motlakase, litlhophiso tsa maeto tse feto-fetohang, le bokhoni ba ho sebetsana le maqhubu a tlaase le a phahameng. Ho feto-fetoha hona ho etsa hore li tšoanelehe ho sebelisoa libakeng tse fapaneng, ho tloha meahong ea bolulo ho ea ho limela tse kholo tsa indasteri.

2. Ho Tšepahala ho Phahameng

Mehaho e matla ea kaho le mekhoa e tšepahalang ea maeto ea li-MCCB li netefatsa hore li fana ka tšireletso e tsitsitseng ha nako e ntse e ea. Bokhoni ba bona bo phahameng ba ho sitisa bo bolela hore esita le haeba ho na le liphoso tse matla, li-MCCB li tla khaola potoloho ka mokhoa o sireletsehileng ntle le ho hlōleha.

3. Polokeho

Ka ho thibela ho tlala, lipotoloho tse khutšoane, le liphoso tsa fatše, li-MCCB li bapala karolo ea bohlokoa ho sireletseng lisebelisoa tsa motlakase le basebetsi maemong a kotsi. Nyeoe e bōpiloeng e fana ka ts'ireletso le ts'ireletso ea tikoloho, ha mochine o ikemetseng oa leeto o tiisa hore liphoso li rarolloa hang-hang.

4. Tlhokomelo e Bonolo

Li-MCCB li ka sebetsoa habonolo ka letsoho molemong oa tlhokomelo, ho lumella lipotoloho ho aroloa ka mokhoa o sireletsehileng ntle le ho hloka ho koaloa ka botlalo ha sistimi. Sena se etsa hore ho be bonolo ho etsa tlhahlobo, ho lokisa, kapa ho ntlafatsa ntle le ho senya likarolo tse ling tsa marang-rang a motlakase.

5. Moqapi oa ho Boloka Sebaka

Moralo o kopaneng oa li-MCCB o li lumella ho sebelisoa libakeng tse thata, joalo ka liphanele tsa motlakase le li-switchboards, ntle le ho tela ts'ebetso. Bokhoni ba bona ba ho sebetsana le maqhubu a maholo ka mokhoa o monyenyane ke oa bohlokoa ka ho khetheha lits'ebetsong moo sebaka se fokolang.

Qetello

The Molded Case Circuit Breaker(MCCB)ke karolo ea bohlokoa lits'ebetsong tsa kabo ea motlakase, e fanang ka tharollo e feto-fetohang, e ka tšeptjoang, le e sebetsang hantle bakeng sa ho sireletsa lipotoloho ho tse ngata, lipotoloho tse khutšoane le liphoso tsa fatše. Ka casing ea eona e tiileng e bōpiloeng, matla a mangata a sitisang, le litlhophiso tsa maeto a feto-fetohang, MCCB e loketse mefuta e mengata ea lisebelisoa ho pholletsa le likarolo tsa matla a indasteri, a khoebo, a bolulo le a ka nchafatsoang.

Ebang e sebelisetsoa ho sireletsa lisebelisoa tse boima tsa indasteri, ho boloka ts'ebetso e sireletsehileng mehahong ea khoebo, kapa ho netefatsa phallo e tsoelang pele ea matla a tsosolositsoeng, MCCBs e fana ka polokeho le botšepehi bo hlokahalang bakeng sa lisebelisoa tsa motlakase tsa morao-rao. Motsoako oa bona oa mekhoa ea maeto a mocheso le a makenete e tiisa hore liphoso li bonoa ka potlako le ho rarolloa, ho fokotsa likotsi ho lisebelisoa le basebetsi ka ho tšoana.

Ka kakaretso, MCCB ha e sireletse lits'ebetso tsa motlakase feela empa e boetse e netefatsa ts'ebetso e tsoelang pele le e bolokehileng ea marang-rang a kabo ea motlakase, e e etsa sesebelisoa sa bohlokoa lefatšeng la sejoale-joale la boenjiniere ba motlakase.