icro Circuit Breaker (MCB kwenguva pfupi) ndeimwe yemidziyo yekudzivirira inonyanyo shandiswa mumagetsi emagetsi ekuparadzira magetsi. Inowanzo shandiswa kune imwe-chikamu uye matatu-chikamu chipfupi chedunhu, yakawandisa uye pamusoro-voltage kudzivirira pazasi 125A, uye inowanikwa mune imwechete-pole, kaviri-pole, matatu-pole uye mana-pole sarudzo. Basa guru re miniature circuit breaker (MCB) ndere kushandura dunhu, kureva kuti kana ikozvino kuburikidza ne miniature circuit breaker (MCB) inodarika kukosha kwakatarwa nayo, inongoerekana yaputsa dunhu mushure meimwe nguva yekunonoka. Kana zvichidikanwa, inogona zvakare kushandura wedunhu nekudzima nemaoko seyakajairika switch.
Miniature Circuit Breaker (MCB) Mamiriro uye Kushanda Nheyo
Miniature Circuit Breakers (MCB) inogadzirwa ne thermoplastic insulating material yakaumbwa mudzimba ine yakanaka mechanicha, inopisa uye insulating zvivakwa. Iyo switching system ine yakagadziriswa static uye inofambisa inofambiswa mabatiro ane macontact uye kubuda waya dzakabatanidzwa pamwechete uye kurodha materminal. Izvo zvinosangana uye zvino-zvinotakura zvikamu zvinogadzirwa ne electrolytic mhangura kana sirivheri alloys, iyo sarudzo inotsamira pane voltage-ikozvino rating yedunhu breaker.
Kana vanobatika vakaparadzana pasi pekuremerwa kana mapfupi edunhu mamiriro, arc inoumbwa. Yemazuva ano miniature circuit breaker (MCB) inoshandiswa kukanganisa kana kubvisa arc dhizaini, arc simba kunyura uye kutonhora nearc yekudzimisa kamuri musimbi arc spacer kuona, aya arc spacers ane insulated bracket akaiswa munzvimbo yakakodzera. Uye zvakare, kushandiswa kwesimba remagetsi emagetsi conductor wedunhu (mabhuroki edunhu ikozvino anowedzera-yekumisikidza chimiro chekusimudzira kugona kwechigadzirwa) kana kuvhuvhuta kwemagineti, kuitira kuti arc ikurumidze kufamba uye kurebesa, kuburikidza nearc inoyerera ichipinda mukamuri inovhiringidza. .
Miniature circuit breaker (MCB) inoshanda sisitimu ine solenoid magineti yekuburitsa mudziyo uye bimetal thermal kuburitsa mudziyo. Iyo magnetic stripping device inenge iine magnetic circuit. Kana yakajairika ikozvino yapfuura mumutsara, iyo electromagnetic simba inogadzirwa ne solenoid ishoma pane tension yechirimo kuti iite simba rekuita, iyo armature haigone kuyamwa ne solenoid, uye dunhu rinotyora rinoshanda zvakajairika. Kana paine chikanganiso chepfupi-chedunhu mumutsara, yazvino inodarika kakati wandei pane yakajairika ikozvino, simba remagetsi rinogadzirwa neelectromagnetic rakakura kudarika rekuita simba rechirimo, armature inoyamwa neelectromagnet kuburikidza nekutapurirana. nzira yekusimudzira iyo yemahara yekuburitsa nzira yekuburitsa iwo makuru ekubatika. Kukurukurirana kukuru kunoparadzaniswa pasi pechiito chekupwanya chitubu chekucheka dunhu kuti riite basa rekudzivirira-pfupi.
Chinhu chikuru mumudziyo wekuburitsa kupisa ndeye bimetal, iyo inowanzo kudzvanywa kubva kumatare maviri akasiyana kana simbi alloys. Metal kana simbi alloy ine hunhu, ndiko kuti, simbi yakasiyana kana simbi alloy panyaya yekupisa, kuwedzera kwevhoriyamu shanduko hakuenderane, saka kana ichipisa, kune maviri akasiyana masimbi kana alloy kuumbwa kwebimetallic. bepa, ichave kune yekuwedzera coefficient yedivi rezasi rekukotama, kushandiswa kwe curvature kukurudzira kuburitswa kwerod rotary kufamba, kuitiswa kwekusunungura kugumbura chiito, kuitira kuti uone kudzivirira kwakawandisa. Sezvo kudzivirira kwekuremerwa kunoitwa nekupisa mhedzisiro, inozivikanwawo sekusunungurwa kwekupisa.
Kusarudzwa kwe1, 2, 3 uye 4 mapango ediki diki redunhu breaker
Single-pole miniature circuit breakers inoshandiswa kupa shanduko nekudzivirira kwechikamu chimwe chete chedunhu. Aya mabreaker breaker anonyanya kugadzirirwa low low voltage circuits. Aya mabreaker breaker anobatsira mukudzora mawaya chaiwo, masisitimu ekuvhenekesa kana maburi mumba. Izvi zvinogona zvakare kushandiswa kune vacuum cleaners, general lighting outlets, mwenje wekunze, mafeni nema blowers etc.
Double pole miniature circuit breakers inowanzo shandiswa muvatengi control unit mapaneru senge main switch. Kutanga kubva pamamita emagetsi, simba rinoparadzirwa mukati memupunzi wedunhu kuenda kunzvimbo dzakasiyana dzeimba. Kaviri danda diki redunhu redunhu rinoshandiswa kupa dziviriro uye nekuchinja kwechikamu uye nekwaakarerekera waya.
Matatu-pole madiki edunhu mabreaker anoshandiswa kupa shanduko uye dziviriro yezvikamu zvitatu chete zvedunhu, kwete zvakarerekera.
A mana-pole miniature circuit breaker, pamusoro pekupa kushandura uye kudzivirira kwezvikamu zvitatu zvedunhu, ine anodzivirira anorova zvakanyanya kune kwaakarerekera pole (semuenzaniso, N pole). Naizvozvo, ina-pole diki diki redunhu redunhu rinofanirwa kushandiswa pese kana yakakwira isina kwayakarerekera mafungu angave aripo mudunhu rese.
Miniature circuit breaker A (Z), B, C, D, K mhando yekusarudza curve
(1) A (Z) mhando yedunhu breaker: 2-3 nguva yakatarwa ikozvino, isingawanzo shandiswa, inowanzo shandiswa semiconductor kudzivirira (mafusi anowanzo shandiswa)
(2) B-type circuit breaker: 3-5 times the rated current, inowanzoshandiswa kune yakachena inodzivirira mitoro uye yakaderera-voltage magetsi maseketi, anowanzoshandiswa mubhokisi rekugovera redzimba kuchengetedza midziyo yemumba uye kuchengetedzwa kwemunhu, kushoma kushandiswa pari zvino. .
(3) C-type circuit breaker: 5-10 nguva iyo yakarongerwa ikozvino, inoda kusunungurwa mukati memasekondi 0.1, maitiro emuvharidzi wedunhu anonyanya kushandiswa, anowanzoshandiswa mukudzivirira mitsara yekuparadzira uye magetsi emagetsi ane kutendeuka kwakakwirira. -pazvino.
(4) D-mhando yedunhu breaker: 10-20 nguva yakayerwa ikozvino, kunyanya munzvimbo yeakakwira nekukurumidza yemidziyo yemagetsi, kazhinji isingashandiswe mumhuri, kune yakakwira inductive mitoro uye yakakura inrush current system, inowanzoshandiswa mu kuchengetedzwa kwemidziyo ine high inrush current.
(5) K-mhando yedunhu breaker: 8-12 nguva yakatarwa ikozvino, inoda kuva mumasekondi 0.1. k-mhando miniature yedunhu rebreaker basa guru nderokudzivirira nekudzora shanduri, anobatsira maseketi nemamotor uye mamwe maseketi kubva kupfupi-sekiti uye kuwandisa. Inokodzera inductive uye mota mitoro ine yakakwira inrush currents.
Nguva yekutumira: Kubvumbi-09-2024