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Gwaro Rakazara reAir Circuit Breaker (ACB): Nheyo dzeKushanda, Mhando & Mashandisirwo eMaindasitiri
2026-07-05
1. Chii Chinonzi Air Circuit Breaker (ACB)?
An Muputsi weDunhu reMhepo (ACB) mudziyo wekushandura magetsi weLV une simba guru unoshandisa mhepo iri pedyo kudzima ma arc emagetsi. ACB dzinogadzirwa zvichienderana ne standard yepasi rose yeIEC 60947-2, dzinofukidza ma currents akatarwa kubva pa630A kusvika pa6300A kusvika pa690V AC.
Semidziyo yekudzivirira yeChikamu B, Maputsi eACB inotsigira kurongeka kwenguva pfupi uye kwenguva pfupi. Ndosaka zvichigara zvakaiswa pama feeder makuru anouya uye ma bus couplers, pane ma branch circuits akajairwa.
Chinhu chikuru: ACB inodzivirira imba yese yemagetsia MCCB inodzivirira mitoro yebazi rega rega.
2. ACB Inoshanda Sei? (Musimboti weKushanda)
Nheyo yekushanda kwe Muputsi weDunhu reMhepo Zvinoshandisa michina inodonha uye mhepo inodzima. Mukati meACB yega yega, zvinhu zvishanu zvepakati zvinoshanda pamwe chete kuchengetedza hurongwa hwemagetsi:
- Vanhu vakuru vaunosangana navo: Takura zvakajairika zvekushanda
- Mugwagwa weArc: Inotonhodza uye inotsemura ma arcs uchishandisa mhepo inoyerera
- Chikamu cherwendo rwemagetsi: Monitors inoremedza zvinhu zvakanyanya, short circuit, uye earth fault
- Maitiro esimba rakachengetwa: Inovhura ipapo ipapo vanhu pavanokanganisa
- Module yekushanda: Inotsigira mashandiro emaoko kana emota
Kana magetsi asina kujairika akaonekwa, trip unit inokonzeresa kuti michina iparadzanise ma contacts. Arc inogadzirwa inosundirwa mu arc chute, yotonhodzwa nemhepo, uye yodzimwa mukati mema milliseconds kuti zvikanganiso zvecircuit zvisapararire.
3. Mhando mbiri huru dzeAir Circuit Breakers
Zvese ACB Muputsi wedunhus dzinowira mumhando mbiri zvichibva pachimiro chekuisa — iyi ndiyo parameter yekutanga kusimbisa panguva yekutsanangurwa.
3.1 Rudzi Rwakagadziriswa ACB
ACB yakagadzika inosungirirwa zvakananga kubhawa re switchgear. Ine chimiro chiri nyore uye inodhura zvishoma. Rudzi urwu rwe Muputsi weDunhu reMhepoyakakodzera mafekitori madiki nemakambani Bhodhi reKugoveras nekuchengetedzwa kusingawanzoitiki.
Zvakaipa: Bhasi guru rinofanira kudzima kuti riongororwe kana kutsiviwa.
3.2 Mhando yeACB yekudhonza
ACB inodhonza inouya nechassis inofambiswa ine nzvimbo nhatu: Yakabatana, Yekuedza, uye Yakaparadzaniswa. Mainjiniya anogona kubvisa breaker kuti iitwe kana kugadziriswa pasina kuderedza simba rebhaa.
Mapurojekiti akakosha akawanda anosarudza kudhirowa kunze Maputsi eACB nekuti zvinoderedza nguva yekushanda uye zvinoderedza njodzi dze arc flash kune vanoshanda.
4. ACB vs MCCB: Musiyano Mukuru weSpecifiers
Vatengi vazhinji vanovhiringidza ACB vs MCCB panguva yekugadzirwa. Tafura iri pazasi inotsanangura miganhu yekushandisa kwavo zvichitevera IEC 60947-2:
5. Kukosha kweACB Technical Ratings
Kusarudza chakarurama muchina wekupwanya dunhu remhepo une voltage shoma, tarisa pane aya maparamita mashanu eIEC standard:
- Yakayerwa Nguva Yazvino (Mukati): Sarudza 10–20% yepamusoro pehuwandu hwemagetsi anorema
- Kugona Kuputsa (Icu/Ics): 50kA kusvika 135kA yenzvimbo dzakasiyana dzema "short-circuit"
- Kutsungirira Kwenguva Pfupi (Icw): Zvakakosha pakusarudza kubatanidza magridi emaindasitiri
- Nhamba yePole: 3P yemitoro yakaringana; 4P yezuva, yekuchengetera zvinhu uye masisitimu asina kuenzana
- Chikamu cherwendo: Rwendo rwemagetsi rwekutanga rwemagetsi kana rwemagetsi rwekutarisa IoT
6. Mashandisirwo Akajairika eACB muindasitiri
Nekuda kwekuchengetedzeka kwakanyanya uye kuenderana nehungwaru, iyo chinodzora mhepo (ACB) Inoshandiswa zvakanyanya mumamiriro ezvinhu aya:
- Nzvimbo dzeData: Kuburitsa ACB ine ATS yekupa magetsi pasina kukanganiswa
- Nzvimbo dzekuchengetera magetsi: ACB yakagadzirirwa DC yemativi maviri
- Zviteshi zvemagetsi zvePV: High Icw ACB inodzivirira kukwira kwesimba remagetsi rinobuda nechiedza
- Mafekitori eindasitiri inorema: Dziviriro huru inouya yekutakura mota hombe
- Zvivako zveveruzhinji: Zvipatara, nhandare dzendege, uye makamuri ekupa magetsi muzvitima
7. Mibvunzo Inowanzo bvunzwa (Mibvunzo Inowanzo bvunzwa)
Mubvunzo 1: Chii chinonzi ACB mumagetsi?
ACB inomirira Muputsi weDunhu reMhepo, mudziyo mukuru wekudzivirira une simba guru we switchgear ine voltage shoma zvichienderana neIEC 60947-2.
Mubvunzo wechipiri: Ndeipi iri nani, ACB kana MCCB?
Zvinoenderana nenzvimbo yazvinofanira kuiswa. Shandisa chinhu Muchina wekupwanya dunhu reACB kune ma feeder makuru anouya; shandisa MCCB kuma branch distribution circuits ari pazasi.
Mubvunzo wechitatu: Ko ACB inogona kushandiswa here pakuchengetedza simba?
Ehe. Unoda chigadzirwa chakagadzirirwa iwe pachako muputsi wedunhu remhepo ine DC breaking kugona kubata bidirectional charge uye discharge current.
8. Tora Mhinduro Yako YeACB Yakagadzirwa Nemunhu
Tinopa zvinhu zvakasiyana-siyana IECMa air circuit breakers ane certification ye60947-2, kusanganisira mhando dzema "fixed/drawn-out", mafuremu e3P/4P, uye rwendo rwakangwara uye shanduro dzeATS. MaACB ese anotsigira magwaro eCE, INMETRO, uye UL emapurojekiti epasi rose.
Tumirai load current, short-circuit rating, uye target market yenyu kuchikwata chedu cheinjiniya. Tora gwara rekusarudza reACB remahara uye mutengo wekutengesa mukati memaawa makumi maviri nemana.