Indlela yokukhetha i-800A MCCB eyiyo kwizicelo zoshishino

Intshayelelo

Kwiinkqubo zokusasazwa kwamandla kwimizi-mveliso, ii-circuit breakers zidlala indima ebalulekileyo ekukhuseleni izixhobo, ukuqinisekisa ukhuseleko lwabasebenzi, kunye nokugcina ukusebenza kuqhubeka. Ukukhetha i-breaker engalunganga kunokubangela ukukhubeka rhoqo, ukukhuselwa okungekho sesikweni, okanye nomonakalo omkhulu wezixhobo. Kwiinkqubo zamandla aphakathi ukuya kwaphezulu, ukukhetha okulungileyo800A MCCB kubaluleke kakhulu, njengoko idla ngokuba sisixhobo esiphambili okanye sokukhusela izixhobo kwiindawo zoshishino ezifuna kakhulu.

1. Qonda iiMfuno zeNkqubo yoMbane

Ngaphambi kokukhetha i-circuit breaker, kubalulekile ukuqonda ngokupheleleyo iimpawu zombane zenkqubo. Izinto eziphambili ziquka umlinganiselo wamandla omthwalo, i-voltage yokusebenza, kunye ne-frequency yenkqubo. Imithwalo yemizi-mveliso efana neemoto, ii-transformers, kunye nezixhobo zemveliso inokutsala umbane ophezulu okanye isebenze ngokuqhubekayo ixesha elide.

Ukongeza, abayili kufuneka baqwalasele ukuba inkqubo isebenzisa umthombo wamandla omnye okanye imithombo emininzi, efana namandla ombane kunye neejenereyitha. Usetyenziso oluqhubekayo lunokufuna ukuncitshiswa ukuqinisekisa ukuthembeka kwexesha elide kunye nokuzinza kobushushu.

2. Vavanya amandla okwahlula kunye nenqanaba lempazamo

Amanqanaba ombane omfutshane kwiinkqubo zoshishino anokuba phezulu kakhulu ngenxa yeetransformers ezinkulu kunye neenethiwekhi ezithintela umbane kancinci. Ke ngoko, amandla okuqhekeza e-MCCB kufuneka anele ukuphazamisa ngokukhuselekileyo umbane onokwenzeka ophezulu kwindawo yokufakela.

Inketho ekhethiweyo ngokufanelekileyo800A MCCBkufuneka zibe namandla aneleyo okuphelisa ukonakala kwenkonzo ukuze zihambelane namanqanaba eempazamo zenkqubo. Amandla okuphelisa ukonakala angaqwalaselwanga kakuhle anokukhokelela ekungaphumelelini kwe-breaker, umonakalo omkhulu, okanye kwiingozi zokhuseleko ngexesha leempazamo.

3. Khetha iYunithi yohambo efanelekileyo kunye nemisebenzi yokukhusela

Ukukhethwa kweeyunithi zokuhamba kuchaphazela ngokuthe ngqo ukuchaneka kokhuseleko kunye nokulungelelaniswa. Iiyunithi zokuhamba ze-thermal-magnetic zihlala zisetyenziswa kwizicelo eziqhelekileyo, ngelixa iiyunithi zokuhamba ze-elektroniki zibonelela ngokuchanekileyo okuphezulu kunye noseto lokhuseleko oluhlengahlengiswayo.

Iiyunithi zokuhamba nge-elektroniki zivumela ukulungiswa kakuhle kweempawu zokugqithisela kakhulu, i-short-circuit, kunye ne-time-libazisekile, nto leyo enceda ekufezekiseni ulungelelwaniso olukhethiweyo lwezixhobo eziphezulu nezisezantsi. Kwezinye iinkqubo zoshishino, imisebenzi eyongezelelweyo yokukhusela efana nokufumanisa iimpazamo zomhlaba nayo inokufuneka.

4. Cinga ngeNdawo yoFakelo kunye neZinto zoMatshini

Iindawo zoshishino zinokuba nzima, zinobushushu obuphezulu, uthuli, ukungcangcazela, kunye nokufuma. Ezi meko zinefuthe ekusebenzeni kakuhle kwe-breaker kunye nobomi benkonzo. Ukukhetha indawo efanelekileyo, umoya ongenisayo, kunye nomgama kubalulekile ukuthintela ubushushu obugqithisileyo kunye nokuqinisekisa ukusebenza ngokukhuselekileyo.

Izinto ekufuneka ziqwalaselwe ngoomatshini ziquka ukuqhelaniswa kokufakelwa, uqhagamshelo lwentambo okanye ibhasi, kunye nokufikeleleka kokuhlolwa nokugcinwa. Ukukhetha uyilo oluqinileyo lwe-breaker kuphucula ukuqina kwaye kunciphisa ixesha lokungasebenzi ngexesha lomjikelo wobomi besixhobo.

5. Qinisekisa ukuThotyelwa kweMigangatho kunye nokufaneleka kweSicelo

Ukuthobela imigangatho yamazwe ngamazwe efana ne-IEC kuqinisekisa ukuba i-MCCB iyahlangabezana neemfuno zokhuseleko, ukusebenza, kunye novavanyo. Usetyenziso lwemizi-mveliso ludla ngokufuna ukuthembeka okuphezulu, ukusebenza okuzinzileyo, kunye nobomi benkonzo ende.

Ukukhetha i-breaker kumvelisi obonelela ngamaxwebhu obuchwephesha apheleleyo, idatha yokuvavanya, kunye nenkxaso emva kokuthengisa kunceda ukuqinisekisa ukuba isisombululo esikhethiweyo sihlala sifanelekile kulo lonke ixesha lokusebenza kwenkqubo.

Imibuzo Ebuzwa Rhoqo (Imibuzo Ebuzwa Rhoqo)

Umbuzo 1: Iphi i800A MCCBisetyenziswa rhoqo kwiinkqubo zoshishino?
A: Isetyenziswa kakhulu njengesixhobo esiphambili sokukhusela i-breaker okanye isixhobo sokukhusela i-feeder kwiiphaneli zokusasaza izimboni.

Umbuzo 2: Ndingawubona njani umthamo wokuqhekeza ofunekayo?
A: Umthamo wokuqhekeza kufuneka ube phezulu kunomlinganiselo ophezulu we-short-circuit current kwindawo yokufakela.

Umbuzo 3: Ngaba iiyunithi zokuhamba nge-elektroniki zingcono kunezo ze-thermal-magnetic?
A: Iiyunithi zokuhamba nge-elektroniki zibonelela ngokuchaneka okuphezulu kunye nokulungelelaniswa, nto leyo ezenza zifaneleke kwizicelo ezinzima okanye ezibalulekileyo zoshishino.

Umbuzo 4: Ngaba ubushushu obungqongileyo bungachaphazela ukusebenza kwe-MCCB?
A: Ewe. Amaqondo obushushu aphezulu angafuna ukucocwa ukuze kuthintelwe ukukhubeka kunye nokugqithisa kakhulu.

Iireferensi

1. I-IEC 60947-2 –Iswitshi ye-voltage ephantsi kunye ne-controlgear - Ii-circuit-breakers

2. IEEE –Indlela Ecetyiswayo Yokukhusela Nokulungelelanisa Iinkqubo Zamandla Ezemizi-mveliso Nezorhwebo

3. USchneider Electric –Isikhokelo soKhetho lwe-Industrial Circuit Breaker

4. I-ABB –Incwadi Yesicelo Nokukhetha ye-MCCB

5. I-Siemens –Amaxwebhu oSasazo lwaMandla aPhantsi kunye noKhuselo