Ndemanga ya Circuit Breakers
Circuit Breaker ndi chida chofunikira kwambiri pamakina amagetsi omwe amagwiritsidwa ntchito poteteza ndi kuwongolera mabwalo. Ikhoza kutseka, kunyamula ndi kusweka mphamvu nthawi zonse kapena zolakwika. Ntchito zake zazikuluzikulu zimaphatikizapo chitetezo chochulukirapo, chitetezo chafupikitsa, chitetezo chopanda mphamvu, ndi zina zotero. Ndizofanana ndi kuphatikiza kwa fuse ndi over / under-voltage thermal relays, koma imakhala yodalirika kwambiri komanso yogwiritsidwanso ntchito.

Main khalidwe magawo
Mphamvu yamagetsi (Ue) : Mphamvu yapamwamba kwambiri yomwe wowononga dera amagwira ntchito bwino, monga 220V, 380V, ndi zina zotero.

Zovoteledwa panopa (Mu) : Mtengo wapamwamba kwambiri womwe ungathe kunyamulidwa motetezeka kwa nthawi yaitali, womwe uyenera kukhala wochuluka kuposa momwe ukuyendera panopa ndi 35%.

Kuthyola mphamvu (Icu / Ics) : Kutha kwamphamvu kwapang'onopang'ono (Icu) kumatanthawuza kutha kuthyola nthawi yayitali kwambiri panthawi imodzi. Operating breaking capacity (Ics) imatanthawuza gawo lomwe lilipo lomwe lingagwiritsidwebe ntchito mutasweka. Nthawi zambiri, ophwanya mafelemu amafunikira Ics≥50% Icu, ndipo zomangira zomangira zimafunikira Ics≥25% ICU.

Kuyimilira kwakanthawi kochepa (Icw) : Kutha kwa woyendetsa dera kuti athe kupirira pakali pano pakanthawi kochepa popanda kuwonongeka.

Ii. Gulu la Ophwanya Circuit
1. Ndi mulingo wamagetsi
High-voltage circuit breakers: Amagwiritsidwa ntchito mu machitidwe a 3kV ndi pamwamba. Wamba arc-kuzimitsa TV monga sulfure hexafluoride (SF6), vacuum, mafuta, etc. 4

Ophwanya magetsi otsika amagawidwa m'mitundu itatu: mtundu wa chimango (ACB), mtundu wamilandu (MCCB), ndi mtundu wawung'ono (MCB). 57.

2. Mwa kupanga ndi kugwiritsa ntchito
Frame Type circuit breaker (ACB
Zovoteledwa panopa: 200A mpaka 6300A, yokhala ndi chitetezo cha magawo anayi (kuchedwa kwa nthawi yaitali, kuchedwa kwafupipafupi, nthawi yomweyo, ndi vuto la pansi), imagwiritsidwa ntchito kwambiri poteteza masiwichi akuluakulu mu machitidwe ogawa kapena zida zazikulu.

Molded case circuit breaker (MCCB
Kapangidwe kakang'ono, komwe kamavotera 10A mpaka 1600A, koyenera kuteteza nthambi. MCCB yamagetsi imathandizira chitetezo chosankha, ndipo mitundu ina imakhala ndi ntchito yolumikizira chigawo 57.

Miniature Circuit Breaker (MCB
Amagwiritsidwa ntchito m'mabwalo ochepera omwe ali pansi pa 125A (monga apakhomo ndi amalonda), omwe amapezeka mu 1P mpaka 4P, ndipo amathandizira kuchulukira, kutetezedwa kwafupipafupi komanso kutayikira.

3. Dinani teknoloji yozimitsa ya arc
Vacuum circuit breaker: Kuzimitsa kwachangu kwa arc, moyo wautali wautumiki, woyenera zochitika pafupipafupi 4.

SF6 circuit breaker: Ili ndi zotchingira zabwino kwambiri komanso zozimitsa arc ndipo imagwiritsidwa ntchito kwambiri pamakina othamanga kwambiri. Kuyera kwa gasi kumafunika kuyesedwa nthawi zonse.

Iii. Mfundo Zosankha Zosokoneza Madera
Fananizani magawo ozungulira
Ma voliyumu ovoteledwa ≥ mzere wamagetsi, ovotera pano ≥ kuchuluka kwa katundu wapano, kuswa mphamvu ≥ kuyembekezeredwa kwanthawi yayitali 57.

Kusintha kwamtundu wa katundu
Chitetezo chagalimoto chikuyenera kuganizira zapano (mtengo wokhazikitsa nthawi yomweyo ndi 1.35 mpaka 1.7 nthawi yoyambira). Dera lowunikira limatenga kuwirikiza kasanu ndi katundu wapano wa 78.

Kugwirizana kosankha
Zowonongeka zam'mwamba ndi zam'munsi ziyenera kukwaniritsa kusiyana kwa nthawi (monga kusiyana kwa kachitidwe kochedwa ≥0.1s) ndi kusiyana kwaposachedwa (zomwe zikuchitika pamlingo wapamwamba ≥ 1.2 nthawi za m'munsimu) kuti mupewe kuyenda mopitirira muyeso.

Kusinthasintha kwa chilengedwe
Pamalo okwera kwambiri, chinyezi kapena kutentha kwambiri, mitundu yapadera iyenera kusankhidwa ndikusinthidwa pano (kuchepetsa mphamvu kumafunika kutentha kupitilira 40 ℃). 13.

Iv. Kuyesa kwa Circuit Breaker ndi Kukonza
Zinthu zazikulu zoyesera
Kukaniza kokhazikika / kwamphamvu: Dziwani kuti kutayika kwa kulumikizana 12.

Kusanthula kwamakina: Kutsegula ndi kutseka nthawi, kuthamanga ndi nthawi imodzi 14.

Kuchita kwa insulation: Kulimbana ndi kuyesa kwamagetsi, kuzindikira kwa digiri ya vacuum (kwa ma vacuum circuit breakers) 14.

Kutsimikizira ntchito yachitetezo: Mawerengedwe olemetsa komanso kuyenda pang'ono pang'onopang'ono 8.

Mfundo zazikuluzikulu zosamalira
Kuyang'ana pafupipafupi: Kuthamanga kwa gasi (SF6 circuit breaker), kulumikizana ndi ablation, makina opaka mafuta 48.

Mayeso odzitetezera: Amachitidwa molingana ndi miyezo monga GB/T 1984 ndi GB 14048, kamodzi pazaka 1 mpaka 3.

Kusamalira zolakwika: Pakakhala kuchepa kwa mafuta, kutentha kapena kuphulika, kudzipatula kwadzidzidzi kumafunika ndipo mavuto okhudzana ndi kukhudzana kapena kuzimitsa kwa arc ayenera kufufuzidwa. 4.

V. Kusanthula Mavuto Odziwika
Kusiyana pakati pa ophwanya dera ndi cholumikizira
The disconnector (QS) amagwiritsidwa ntchito kokha kupatula magetsi ndipo alibe arc-kuzimitsa mphamvu. Circuit breaker (QF) imatha kudula cholakwika cha 12.

Kufunika kwa Icu ndi Ics
Icu imawonetsa kusweka komaliza, ndipo Ics ikuwonetsa kudalirika kwa magwiridwe antchito mosalekeza. Mizere yayikulu imayang'ana pa Ics, pomwe mizere yanthambi imayang'ana pa Icu8.

Kusankhidwa kwa ma circuit breakers omwe akulepheretsa panopa
Fananizani kupsinjika kwa kutentha kwa chingwe kudzera pamapindi apano, ndipo perekani patsogolo pamitundu yothamanga kwambiri (monga vacuum circuit breakers) 78.

Chitetezo cha kutayikira sichinagwire ntchito
Makamaka chifukwa cha kuchepa kwa kutchinjiriza kwa mizere kapena kusakhazikika bwino, ndikofunikira kuzindikira kutayikira kwaposachedwa ndikusintha zomwe zimachitika (nthawi zambiri 30mA mpaka 300mA)