icro Circuit Breaker (MCB maka mkpụmkpụ) bụ otu n'ime ngwa nchebe ọnụ ọnụ na-ejikarị na ngwaọrụ nkesa ọkụ eletrik. A na-ejikarị ya eme ihe maka otu nkeji na nkenke nke atọ, oke ibu na nchedo voltaji n'okpuru 125A, a na-enwetakwa ya na otu-pole, okpukpu abụọ, atọ-pole na anọ nhọrọ. Isi ọrụ nke miniature circuit breaker (MCB) bụ ịgbanwee sekit, ya bụ, mgbe nke ugbu a site na miniature sekit breaker (MCB) karịrị uru setịpụrụ ya, ọ ga-akpaghị aka na-agbaji sekit mgbe ụfọdụ igbu oge. Ọ bụrụ na achọrọ ya, ọ nwekwara ike gbanye ma gbanyụọ sekit ahụ na aka dị ka mgba ọkụ nkịtị.
Nhazi na ụkpụrụ arụ ọrụ
Obere sekit Breakers (MCB) bụ nke thermoplastic mkpuchi ihe akpụziri n'ime ụlọ nwere ezigbo igwe, ọkụ na ihe mkpuchi. Sistemụ ngbanwe ahụ nwere kọntaktsị kwụ ọtọ na nke na-akpụ akpụ nwere kọntaktsị na waya mmepụta jikọtara ọnụ yana ibu ọnụ. A na-eme kọntaktị na akụkụ ndị na-ebu ugbu a nke ọla kọpa electrolytic ma ọ bụ ọla ọcha, nke nhọrọ ya dabere na ọkwa voltaji-nke ugbu a nke onye na-agbaji sekit.
Mgbe kọntaktị kewapụrụ n'okpuru oke ibu ma ọ bụ ọnọdụ sekit dị mkpụmkpụ, a na-emepụta arc. A na-eji obere sekit sekit nke oge a (MCB) kwụsị ma ọ bụ kpochapụ imewe arc, arc ume absorption na jụrụ site na arc na-ekpochapụ ụlọ na metal arc spacer iji ghọta, arc spacers ndị a nwere mkpuchi mkpuchi edobere n'ọnọdụ kwesịrị ekwesị. Ke adianade do, ojiji nke conductor sekit eletriki eletriki (circuit breakers now ọzọ ugbu a-mmachi Ọdịdị ka welie agbasa ike nke ngwaahịa) ma ọ bụ magnetik ịfụ, nke mere na arc ngwa ngwa kpaliri na elongated, site arc eruba ọwa n'ime interrupter ụlọ. .
Usoro arụ ọrụ nke obere sekit (MCB) nwere ngwaọrụ ntọhapụ magnetik na ngwaọrụ ntọhapụ bimetal. Ngwa ndọta n'ezie bụ sekit magnetik. Mgbe a na-agafe ugbu a n'ahịrị, ike electromagnetic nke solenoid na-emepụta dị ntakịrị karịa esemokwu mmiri iji mepụta ike mmeghachi omume, solenoid enweghị ike ịmịnye armature ahụ, onye na-agbaji sekit na-arụkwa ọrụ nke ọma. Mgbe enwere mmejọ nke obere okirikiri na ahịrị, nke ugbu a gafere ọtụtụ ugboro ka ọ na-adị ugbu a, ike elektrọnik na-emepụta site na electromagnet karịrị ike mmeghachi omume nke mmiri, electromagnet na-aṅụ armature site na nnyefe site na nnyefe. usoro iji kwalite usoro ntọhapụ efu iji hapụ ndị kọntaktị bụ isi. A na-ekewa kọntaktị isi n'okpuru ọrụ nke mmiri na-agbaji agbaji iji bepụ sekit iji rụọ ọrụ nke nchebe obere oge.
Isi ihe dị na ngwaọrụ ntọhapụ thermal bụ bimetal, nke a na-agbanyekarị site na ọla abụọ dị iche iche ma ọ bụ alloys metal. Igwe ígwè ma ọ bụ ígwè ígwè nwere ihe e ji mara ya, ya bụ, ígwè dị iche iche ma ọ bụ ígwè ígwè dị iche iche n'ihe banyere okpomọkụ, mgbasawanye nke mgbanwe olu adịghị agbanwe agbanwe, ya mere, mgbe ọ na-ekpo ọkụ, maka ihe abụọ dị iche iche metal ma ọ bụ ihe ngwakọta nke bimetallic. mpempe akwụkwọ, ọ ga-abụ ka mgbasa ọnụọgụ nke akụkụ nke ala n'akụkụ ekwe, ojiji nke curvature na-akwalite ntọhapụ nke mkpanaka rotary ije, mmejuputa atumatu nke ntọhapụ tripping edinam, nke mere na-aghọta na-ebufe nchebe. Ebe ọ bụ na a na-enweta nchedo oke ibu site na mmetụta thermal, a makwaara ya dị ka ntọhapụ thermal.
Nhọrọ nke 1, 2, 3 na 4 okporo osisi nke obere sekit breaker
A na-eji ihe mgbawa sekit pere mpe na-enye otu ngbanwe na nchekwa maka naanị otu akụkụ nke sekit. Emebere sekit sekit ndị a maka sekit voltaji dị ala. Ndị na-agbaji sekit ndị a na-enyere aka n'ịchịkwa wires kpọmkwem, sistemu ọkụ ma ọ bụ ihe ntanetị n'ime ụlọ. Enwere ike iji ihe ndị a maka ndị na-ehicha oghere, ebe ọkụ ọkụ n'ozuzu, ọkụ n'èzí, ndị fan na ndị na-afụ ọkụ wdg.
A na-ejikarị ihe mgbaji sekit pere mpe okpukpu abụọ na ogwe njikwa ndị ahịa dị ka mgba ọkụ isi. Na-amalite site na mita ike, ike na-agbasasị n'ime eriri sekit gaa n'akụkụ dị iche iche nke ụlọ ahụ. A na-eji ihe mgbaji sekit miniature okpukpu abụọ na-enye nchebe na ịgbanwee maka wires na-anọpụ iche.
A na-eji ihe mgbawa sekit nwere obere ogwe atọ iji nye mgbanwe na nchebe maka naanị akụkụ atọ nke sekit, ọ bụghị nnọpụiche.
Ihe mgbaji sekit nke nwere obere ogwe anọ, na mgbakwunye na inye mgbanwe na nchekwa maka akụkụ atọ nke sekit, nwere onye na-eche nche bụ isi maka mkpanaka na-anọpụ iche (dịka ọmụmaatụ, ogwe N). Ya mere, a ga-eji ihe mgbaji sekit nwere obere ogwe anọ mgbe ọ bụla enwere ike ịdị na-anọpụ iche dị elu na sekit ahụ dum.
Obere sekit breaker A (Z), B, C, D, K ụdị mgbanaka nhọrọ
(1) Ụdị sekit nke A (Z): 2-3 ugboro dị ugbu a, nke a na-ejikarị eme ihe, nke a na-ejikarị eme ihe maka nchebe semiconductor (fuses na-ejikarị)
(2) Ụdị sekit sekit nke ụdị B: 3-5 ugboro nke agbagoro ugbu a, nke a na-ejikarị eme ihe maka ibu mgbochi dị ọcha na sekit ọkụ ọkụ dị ala, nke a na-ejikarị na igbe nkesa nke ezinụlọ iji chebe ngwa ụlọ na nchekwa onwe onye, obere eji ya ugbu a. .
(3) Ụdị C-ụdị C: 5-10 ugboro nke a na-edepụta ugbu a, ọ dị mkpa ka ahapụ ya n'ime 0.1 sekọnd, a na-ejikarị njirimara nke eriri sekit eme ihe, nke a na-ejikarị na-echebe nkesa nkesa na ọkụ ọkụ na-atụgharị elu. - na ugbu a.
(4) D-ụdị sekit breaker: 10-20 ugboro ndị gosiri ugbu a, tumadi na gburugburu ebe obibi nke elu ozugbo ugbu a nke ngwa eletriki, n'ozuzu obere eji na ezinụlọ, n'ihi na elu inductive ibu na nnukwu inrush ugbu a usoro, a na-ejikarị na nchebe nke akụrụngwa na elu inrush ugbu a.
(5) Ụdị sekit nke ụdị K: 8-12 ugboro nke egosipụtara ugbu a, kwesịrị ịdị na 0.1 sekọnd. K-ụdị miniature sekit breaker isi ọrụ bụ ichekwa na jikwaa transformer, inyeaka sekit na Motors na ndị ọzọ sekit si mkpụmkpụ-circuit na ibufe. Kwesịrị ekwesị maka ibu inductive na moto nwere oke inrush.
Oge nzipu: Eprel-09-2024