Isingeniso sokukhubeka kwe-molded case circuit breaker

I-circuit breaker yekesi ebunjiwe (I-MCCB) iyingxenye ebalulekile yemboni yokusatshalaliswa kwamandla aphansi. Umsebenzi wayo oyinhloko ukusika noma ukuhlukanisa ugesi wephutha ngaphakathi kobubanzi obujwayelekile nobungakalwe ukuze kuqinisekiswe ukuphepha kwemigqa nemishini. Esinye sezici ezibalulekile ze-MCCB indlela yayo yokukhubeka, edlala indima ebalulekile ekuphenduleni izimo zephutha nokuvimbela izingozi ezingaba khona.

Ama-MCCB anezindlela eziningana zohambo ezivamile, ngayinye eklanyelwe ukubhekana nohlobo oluthile lwesimo sephutha kanye nezidingo zokusebenza. Indlela yokuqala i-single magnetic tripping, lapho i-circuit breaker iphuka khona kuphela lapho kwenzeka iphutha le-short circuit emgqeni. Lolu hlobo lohambo luvame ukusetshenziswa kuma-heater circuits noma kuma-motor circuits anokuvikelwa kokulayisha ngokweqile ukuze kunikezwe isivikelo esidingekayo kulezi zinhlelo zokusebenza.

Ukugoba kwe-thermal-magnetic, okwaziwa nangokuthi ukugoba okuhlanganisiwe, kungenye indlela ebalulekile yama-molded case circuit breakers. Le ndlela ibangela i-circuit breaker ukuthi igobe lapho kwenzeka iphutha le-short circuit emgqeni noma i-line current idlula i-rated current isikhathi eside. Le ndlela yokuhamba eguquguqukayo ivame ukusetshenziswa ezimweni ezijwayelekile zokusatshalaliswa kwamandla, ihlinzeka ngokuvikelwa okuphelele kwezinhlelo zokusebenza eziningi.

Ngaphezu kwalezi zindlela zendabuko zokukhubeka, ukukhubeka nge-elekthronikhi sekuwubuchwepheshe obuyinkimbinkimbi be-MCCB. Ama-circuit breaker ahlonyiswe ngamayunithi okukhubeka nge-elekthronikhi anomsinga wohambo oluguquguqukayo, umsinga wohambo olushisayo kanye nesikhathi sokukhubeka, okuthuthukisa ukuguquguquka nokunemba kokuvikela izinhlelo zikagesi. Nakuba ukukhubeka nge-elekthronikhi kunikeza ukusebenza okubanzi, kubalulekile ukuqaphela ukuthi ama-MCCB asebenzisa lobu buchwepheshe ngokuvamile abiza kakhulu ngenxa yezici zawo ezithuthukisiwe.

Ngaphezu kwalokho, ama-circuit breaker akhethekile angasetshenziswa ukuvikela ama-motor circuits, kanti ama-magnetic tripping currents avame ukudlula izikhathi eziyi-10 kunama-current alinganisiwe. Lo mklamo usiza ukuvimbela ama-peak currents ngesikhathi sokuqala kwe-motor, okuqinisekisa ukusebenza okubushelelezi nokuthembekile.

Ngemisebenzi yayo ehlukahlukene yokukhubeka, ama-molded case circuit breakers ahlinzeka ngesisombululo esiphelele sokuvikela izinhlelo zokusatshalaliswa kwe-low-voltage. Kungakhathaliseki ukuthi i-single magnetic tripping, i-thermal magnetic tripping, i-electronic tripping noma i-motor circuit protection, kukhona i-molded case circuit breaker ehlangabezana nezidingo ezithile zesicelo ngasinye, okwenza kube yimpahla ebalulekile yokuqinisekisa ukuphepha nokuthembeka kwezinhlelo zikagesi.