Raws li lub tuam txhab sawv cev tshaj plaws hauv Wenzhou, YUANKY muaj keeb kwm ntev ntawm kev txhim kho thiab kev lag luam tiav. Peb cov khoom kuj sib tw heev hauv kev ua lag luam. xws liMCB.

MCB (Miniature Circuit Breaker, me me circuit breaker) yog ib qho ntawm cov khoom siv tiv thaiv dav dav tshaj plaws hauv cov kab ke faib hluav taws xob qis. Nrog rau qhov zoo xws li me me, kev ua haujlwm yooj yim thiab kev tiv thaiv meej, nws tau siv dav hauv cov kab faib khoom ntawm cov tsev lag luam, cov tsev lag luam thiab cov tsev pej xeem, ua cov haujlwm tseem ceeb xws li kev tiv thaiv kev sib tshooj hluav taws xob thiab kev tiv thaiv luv luv. Cov hauv qab no yog kev tshuaj xyuas ntxaws ntxaws ntawm nws cov yam ntxwv ua haujlwm los ntawm ntau yam xws li cov haujlwm tseem ceeb, cov yam ntxwv kev siv, thiab cov yam ntxwv ntawm kev siv.

I. Kev Tiv Thaiv Core: Xyuas kom meej tias lub voj voog ua haujlwm zoo

Lub ntsiab lus tseem ceeb ntawm MCB yog kev tiv thaiv kev nyab xeeb ntawm cov kab faib khoom thiab cov khoom siv hluav taws xob. Nws txoj haujlwm tiv thaiv feem ntau yog ua tiav los ntawm cov txheej txheem ua haujlwm meej, tshwj xeeb suav nrog ob hom kev tiv thaiv tseem ceeb hauv qab no:

1. Kev tiv thaiv kev ua haujlwm ntau dhau

Thaum lub voj voog ua haujlwm li qub, qhov tam sim no nyob hauv qhov ntsuas. Txawm li cas los xij, thaum muaj ntau yam khoom siv hluav taws xob lossis lub voj voog raug overloaded ntev, qhov tam sim no hauv kab yuav tshaj qhov ntsuas, ua rau cov xov hlau kub. Yog tias overloaded ntev, nws yuav ua rau rwb thaiv tsev laus, luv luv circuits thiab txawm tias hluav taws. Kev tiv thaiv overload ntawm MCB yog ua tiav los ntawm bimetallic strip thermal trip device: thaum tam sim no tshaj qhov ntsuas, bimetallic strip khoov thiab deforms vim yog cua sov tsim los ntawm tam sim no, tsav lub tshuab mus ua haujlwm, ua rau lub voj voog breaker sib cuag qhib thiab txiav tawm lub voj voog.

Nws txoj kev tiv thaiv overload muaj tus cwj pwm inverse-time, uas yog, qhov ntau dua qhov overload tam sim no, lub sijhawm ua haujlwm luv dua. Piv txwv li, thaum tam sim no yog 1.3 npaug ntawm qhov tam sim no ntsuas, lub sijhawm ua haujlwm yuav kav ntev li ob peb teev. Thaum tam sim no mus txog rau npaug ntawm qhov tam sim no ntsuas, lub sijhawm ua haujlwm tuaj yeem luv dua li ob peb feeb. Qhov no tsis yog tsuas yog zam kev tripping tsis tsim nyog los ntawm lub sijhawm luv luv me me overload tab sis kuj sai sai txiav tawm lub voj voog yog tias muaj overload hnyav, ua tiav kev tiv thaiv yooj ywm thiab txhim khu kev qha.

2. Kev tiv thaiv luv luv

Kev luv luv yog ib qho ntawm cov teeb meem txaus ntshai tshaj plaws hauv cov voj voog, feem ntau yog los ntawm kev puas tsuaj rau cov xov hlau rwb thaiv tsev lossis cov teeb meem sab hauv ntawm cov khoom siv. Lub sijhawm no, cov hluav taws xob nce siab tam sim ntawd (tej zaum yuav ncav cuag kaum lossis ntau pua npaug ntawm cov hluav taws xob ntsuas), thiab lub zog hluav taws xob loj heev thiab cua sov tsim tawm tuaj yeem hlawv cov xov hlau thiab cov khoom siv tam sim ntawd, thiab txawm tias ua rau muaj hluav taws lossis raug mob hluav taws xob. Kev tiv thaiv luv luv ntawm MCB yog ua tiav los ntawm lub cuab yeej hluav taws xob electromagnetic trip: thaum cov hluav taws xob luv luv hla lub kauj ntawm lub cuab yeej hluav taws xob electromagnetic trip, lub zog hluav taws xob muaj zog tsim tawm, rub lub armature los ntaus lub mechanism, ua rau cov contacts qhib sai sai thiab txiav lub voj voog.

Lub sijhawm ua haujlwm ntawm kev tiv thaiv luv luv yog luv heev, feem ntau yog li ntawm 0.1 vib nas this. Nws tuaj yeem cais qhov txhaum sai sai ua ntej qhov txhaum nthuav dav, txo qhov kev puas tsuaj ntawm cov txhaum luv luv rau kab thiab cov khoom siv, thiab tiv thaiv kev nyab xeeb ntawm tus kheej thiab khoom vaj khoom tsev.

II. Cov yam ntxwv kev txawj ntse: Tseeb, ruaj khov thiab txhim khu kev qha

1. Kev ua haujlwm siab heev hauv kev txav mus los

Cov nqi tiv thaiv ntawm MCB tau tsim thiab ntsuas kom nruj kom ntseeg tau tias kev ua haujlwm raug hauv qhov ntau thiab tsawg tam sim no. Tus nqi teeb tsa tam sim no ntawm nws qhov kev tiv thaiv overload (xws li tsis ua haujlwm ntawm 1.05 npaug ntawm qhov ntsuas tam sim no thiab ua haujlwm hauv lub sijhawm pom zoo ntawm 1.3 npaug ntawm qhov ntsuas tam sim no) thiab qhov tsawg kawg nkaus ntawm kev tiv thaiv luv luv (feem ntau 5 txog 10 npaug ntawm qhov ntsuas tam sim no) ob qho tib si ua raws li cov qauv thoob ntiaj teb (xws li IEC 60898) thiab cov qauv hauv tebchaws (xws li GB 10963). Thaum lub sijhawm tsim khoom, txhua MCB yuav tsum tau ntsuas kom nruj kom ntseeg tau tias qhov yuam kev ntawm lub sijhawm ua haujlwm nyob rau hauv cov xwm txheej tam sim no sib txawv raug tswj hwm hauv qhov ntau thiab tsawg uas tso cai, zam "kev ua tsis tiav" (tsis tripping thaum muaj qhov yuam kev) lossis "kev ua haujlwm cuav" (tripping thaum ua haujlwm ib txwm).

2. Lub neej ntev thiab hluav taws xob

MCB yuav tsum tau tiv taus kev kaw thiab qhib ua haujlwm ntau zaus nrog rau kev cuam tshuam ntawm qhov txhaum tam sim no, yog li muaj cov kev cai nruj rau lub neej kho tshuab thiab hluav taws xob. Lub neej kho tshuab txhais tau tias pes tsawg zaus uas lub circuit breaker ua haujlwm hauv lub xeev tsis muaj tam sim no. Lub neej kho tshuab ntawm MCB zoo tuaj yeem ncav cuag ntau dua 10,000 zaug. Lub neej hluav taws xob txhais tau tias pes tsawg zaus nws ua haujlwm hauv qab qhov hnyav ntawm qhov tam sim no ntsuas, feem ntau tsis tsawg dua 2,000 zaug. Nws cov khoom tseem ceeb sab hauv (xws li cov khoom sib cuag, cov txheej txheem tripping, thiab cov caij nplooj ntoos hlav) yog ua los ntawm cov ntaub ntawv muaj zog (xws li cov khoom sib cuag nyiaj thiab cov khoom siv hluav taws xob phosphor bronze), thiab los ntawm kev ua tiav thiab kev kho cua sov, lawv txoj kev tiv thaiv hnav, tiv thaiv corrosion, thiab tiv thaiv kev nkees tau txhim kho kom ntseeg tau tias muaj kev ua haujlwm ruaj khov txawm tias tom qab siv ntev.

3. Lub peev xwm tawg tau hloov kho rau qhov xav tau ntawm qhov chaw

Lub peev xwm tawg yog hais txog qhov siab tshaj plaws ntawm lub luv luv tam sim no uas MCB tuaj yeem tawg tau zoo nyob rau hauv cov xwm txheej tshwj xeeb, thiab nws yog qhov qhia tseem ceeb rau kev ntsuas nws lub peev xwm tiv thaiv luv luv. Nyob ntawm cov xwm txheej ntawm daim ntawv thov, lub peev xwm tawg ntawm MCB tuaj yeem faib ua ntau theem, xws li:

Hauv cov xwm txheej pej xeem, MCBS nrog lub peev xwm tawg ntawm 6kA lossis 10kA feem ntau siv, uas tuaj yeem daws cov teeb meem luv luv hauv tsev neeg lossis cov chaw lag luam me.

Hauv cov xwm txheej kev lag luam, MCBS nrog cov peev xwm tawg siab dua (xws li 15kA thiab 25kA) yuav tsum tau hloov kho rau cov chaw muaj cov khoom siv ntom ntom thiab cov hluav taws xob luv luv loj.

Qhov kev paub txog lub peev xwm tawg yog nyob ntawm lub kaw lus tua hluav taws xob arc zoo tshaj plaws (xws li lub grid arc tua hluav taws xob chamber). Thaum lub sijhawm luv luv, lub arc raug coj mus rau hauv lub chamber tua hluav taws xob arc sai sai, thiab lub arc raug faib ua ntau lub arc luv luv los ntawm cov hlau grids, txo qhov hluav taws xob arc thiab tua lub arc sai sai kom tiv thaiv kev puas tsuaj rau cov qauv sab hauv ntawm lub circuit breaker vim muaj qhov kub siab arc.

Iii. Cov yam ntxwv ntawm kev tsim kho thiab kev ua haujlwm: Kev ua kom me me thiab yooj yim

Kev cog lus me me thiab yooj yim rau nruab

MCB siv tus qauv tsim modular, me me (feem ntau nrog cov modules txheem xws li 18mm lossis 36mm dav), thiab tuaj yeem ntsia ncaj qha rau ntawm cov hlau ntawm cov thawv faib khoom txheem lossis cov txee faib khoom, txuag qhov chaw teeb tsa. Nws cov qauv me me ua rau muaj kev tiv thaiv ywj pheej ntawm ntau lub voj voog hauv qhov chaw faib hluav taws xob tsawg. Piv txwv li, hauv lub thawv faib khoom hauv tsev, ntau MCBS tuaj yeem siv los tswj cov voj voog sib txawv xws li teeb pom kev zoo, qhov (sockets), thiab cua txias, ua tiav kev tiv thaiv thiab kev tswj hwm sib cais, uas yooj yim rau kev kuaj pom qhov txhaum thiab kev tswj hwm kev siv hluav taws xob.

2. Yooj yim rau kev khiav lag luam thiab yooj yim rau kev tswj hwm

Lub tshuab ua haujlwm ntawm MCB yog tsim los rau tib neeg. Kev kaw ("ON" txoj haujlwm) thiab qhib ("OFF" txoj haujlwm) ua tiav los ntawm tus kov. Qhov xwm txheej ntawm tus kov pom tseeb, tso cai rau kev txiav txim siab ntawm lub xeev qhib-tawm ntawm lub voj voog. Tom qab qhov txhaum TRIP, tus kov yuav cia li nyob rau hauv qhov chaw nruab nrab ("TRIP" txoj haujlwm), pab cov neeg siv kom sai sai txheeb xyuas lub voj voog tsis zoo. Thaum rov pib dua, tsuas yog txav tus kov mus rau qhov chaw "OFF" thiab tom qab ntawd thawb nws mus rau qhov chaw "ON". Tsis tas yuav muaj cov cuab yeej tshaj lij thiab kev ua haujlwm yooj yim. Hauv kev saib xyuas txhua hnub, MCB tsis tas yuav tsum tau debugging lossis kev tshuaj xyuas nyuaj. Nws tsuas yog xav tau kev kuaj xyuas tsis tu ncua kom ntseeg tau tias qhov tsos zoo thiab kev ua haujlwm du, ua rau cov nqi saib xyuas tsawg.

3. Kev ua tau zoo heev ntawm kev rwb thaiv tsev

Yuav kom ntseeg tau tias muaj kev nyab xeeb ntawm hluav taws xob, lub plhaub thiab cov khoom rwb thaiv tsev sab hauv ntawm MCB yog ua los ntawm cov khoom siv rwb thaiv tsev uas tiv taus hluav taws xob siab thiab kub siab (xws li cov yas thermosetting thiab ABS uas tiv taus hluav taws), nrog rau kev tiv thaiv rwb thaiv tsev ntawm ≥100MΩ, muaj peev xwm tiv taus 2500V AC voltage withstand test (tsis muaj kev tawg lossis flashover hauv 1 feeb). Nws tseem tuaj yeem tswj tau kev ua haujlwm rwb thaiv tsev zoo hauv qhov chaw nyuaj xws li av noo thiab plua plav, tiv thaiv kev xau lossis theem luv luv, thiab xyuas kom muaj kev nyab xeeb ntawm cov neeg teb xov tooj thiab cov khoom siv.

Iv. Cov Haujlwm Nthuav Dav thiab Kev Hloov Kho Tau: Ua Tau Raws Li Qhov Xav Tau Ntau Yam

1. Ua kom muaj ntau hom kev sib txawv

Ntxiv rau qhov kev tiv thaiv overload thiab luv luv, MCB kuj tseem tuaj yeem ua tau raws li qhov xav tau ntawm ntau qhov xwm txheej los ntawm kev nthuav dav ua haujlwm. Cov hom derivative feem ntau suav nrog:

- MCB nrog kev tiv thaiv kev xau (RCBO): Nws koom ua ke lub module nrhiav kev xau raws li MCB ib txwm muaj. Thaum muaj kev xau hauv lub voj voog (tam sim no seem tshaj 30mA), nws tuaj yeem ua haujlwm sai sai kom tiv thaiv kev raug mob hluav taws xob thiab siv dav hauv cov voj voog qhov (socket) hauv tsev.

- MCB nrog kev tiv thaiv overvoltage / undervoltage: Tua hluav taws xob thaum lub zog hluav taws xob siab dhau lossis qis dhau los tiv thaiv cov khoom siv rhiab heev xws li lub tub yees thiab cua txias los ntawm kev puas tsuaj los ntawm kev hloov pauv hluav taws xob.

- Kho tau qhov ntsuas tam sim no MCB: Kho qhov ntsuas tam sim no los ntawm lub pob qhov rooj, haum rau cov xwm txheej uas qhov tam sim no thauj khoom yuav tsum tau hloov kho kom yooj yim.

2. Muaj kev hloov pauv zoo rau ib puag ncig

MCB tuaj yeem ua haujlwm ruaj khov nyob rau hauv ntau yam xwm txheej ib puag ncig, feem ntau siv tau rau hauv qhov kub thiab txias ntawm -5 ℃ txog 40 ℃ (cov qauv tshwj xeeb tuaj yeem nthuav dav mus rau -25 ℃ txog 70 ℃), nrog rau qhov av noo ntawm ≤95% (tsis muaj dej noo), thiab tuaj yeem hloov kho rau cov huab cua ntawm thaj chaw sib txawv. Lub caij no, nws cov qauv sab hauv muaj qee yam peev xwm los tiv taus kev co thiab kev poob siab, thiab tuaj yeem ua haujlwm tau zoo hauv cov chaw lag luam lossis cov tsheb thauj mus los (xws li nkoj thiab cov tsheb ua si) nrog kev co me ntsis.

Qhov sib txawv ntawm lwm cov circuit breakers:

MCB (Miniature Circuit Breaker): Feem ntau siv rau kev tiv thaiv Circuit Court nrog cov hluav taws xob tsawg (feem ntau tsawg dua 100 amperes).

MCCB (Molded Case Circuit Breaker): Nws yog siv rau kev tiv thaiv Circuit Court nrog cov hluav taws xob siab dua (feem ntau ntau dua 100 amperes) thiab nws tsim nyog rau cov khoom siv loj thiab cov kab ke faib hluav taws xob.

RCBO (Leakage Circuit Breaker): Nws ua ke kev tiv thaiv overcurrent thiab kev tiv thaiv leakage, thiab tuaj yeem tiv thaiv lub voj voog ntawm overload, luv Circuit thiab leakage tib lub sijhawm.