Kunzwisisa Kugona Kuputsa uye Hunhu hweKufamba kwe250 Amp MCCB

1. Nhanganyaya: Nei Kuputsa Hunhu Hwekugona uye Hunhu Hwekufamba Zvichikosha

Mumazuva ano masisitimu ekugovera magetsi ane simba shoma, dziviriro yedunhu yakakosha pakuchengetedza uye kushanda zvakanaka. Molded Case Circuit Breakers (MCCBs) dzinoshandiswa zvakanyanya kudzivirira tambo, michina, uye mitoro kubva pakuremerwa zvakanyanya uye mashort circuits.
Pakati pezvakajairika,250 Amp MCCB Inowanzo shandiswa muzvivakwa zvemabhizinesi uye munzvimbo dzakareruka dzemaindasitiri, uko kunzwisisa kugona kwekugadzirisa uye maitiro ekudonha kwesimba kwakakosha pakugadzira sisitimu nemazvo.

2. Zvinorevei Kuputsa Kugona uye Nei Zvichikosha Mukuchengetedzwa Kwedunhu

Kugona kutyora zvinoreva simba guru remagetsi rinogona kukanganiswa necircuit breaker pasina kukuvara. Rinowanzotsanangurwa nematanho maviri akakosha: kugona kutyora kwemagetsi (Icu) uye kugona kutyora kwemagetsi (Ics).
Kusarudza breaker ine simba rakakwana rekutyora kunoita kuti, panguva yechiitiko che short-circuit, mudziyo unogona kukanganisa fault current pasina kukonzera njodzi huru kana njodzi dzechipiri. Izvi zvakakosha zvikuru mumasisitimu ane short-circuit currents dzinotarisirwa.

3. Kushanda Kwenguva Pfupi uye Kukanganiswa Kwezvino Kwechikanganiso

Kana paine circuit pfupi, ma currents akakwira zvikuru anoyerera nepakati pe system munguva pfupi. MCCBs dzakagadzirirwa kuvhura contacts nekukurumidza uku dzichidzora simba rekupisa ne electromagnetic rinogadzirwa panguva yekukanganiswa kwe fault.
Kushanda zvakanaka kwemaitiro aya kunokanganisa zvakananga kuchengetedzeka kwehurongwa, zvichideredza kukuvara kwemidziyo iri pasi pemvura uye zvichideredza njodzi yekukanganisa kwearc. Kuongorora kwakakodzera mashandiro e short-circuit kunobatsira mainjiniya kuona kuti zvikanganiso zvinobviswa zvakanaka.

4. Mhando dzeTrip Units uye Zvigadziriso zveDziviriro Zvinogoneka

MaMCCB anowanzo shongedzerwa nemayuniti ekufamba nemagetsi kana emagetsi. Mayuniti emagetsi anopa simba rakawanda uye dziviriro yekukurumidza-kupfupika kwemhepo, nepo mayuniti ekufamba nemagetsi achipa kururama kukuru uye kugadziriswa.
Magadzirirwo anogadziriswa anobvumira maparamita ekudzivirira kuti aenderane nemamiriro chaiwo emutoro, zvichivandudza kurongeka uye kuderedza kukanganiswa kwezvinetso. Mumapurogiramu anoshandisa a250 Amp MCCB, kuchinjika uku kunotsigira kuvimbika kwekudzivirira uye kushanda zvakanaka.

5. Kubatanidza Hunhu hweKufamba nezvinodiwa zveSystem Load

Hunhu hwekufamba hunofanira kuenderana neprofile yemutoro wemagetsi kuti ive nechokwadi chekudzivirirwa kunobudirira. Kurongeka kwakakodzera kunodzivirira kukanganiswa kusingakoshi uku uchichengetedza kusarudzwa pakati pemidziyo iri kumusoro neiri pasi.
Zvirongwa zvekudzivirira zvakarongeka zvakanaka zvinovandudza kugadzikana kwehurongwa uye zvinobatsira kuchengetedza kuenderera mberi kwebasa, kunyanya muzvivakwa uko nguva yekushanda iri chinhu chakakosha.

6. Kufunga Nezvemitemo, Kuedza, uye Kutevedzera Kuchengetedzeka

Mitemo yepasi rose yakaita seIEC 60947-2 neUL 489 inotsanangura mashandiro, kuyedzwa, uye zvinodiwa zvekuchengetedza zveMCCBs. Kutevedzera mitemo iyi kunoita kuti michina ishande sezvaitarisirwa mumamiriro ezvinhu asina kunaka.
Kushandisa zvigadzirwa zvine certification uye kutevedzera maitiro ekuzviisa nemazvo uye kuaisa pabasa kunosimudzira kuvimbika kwenguva refu.250 Amp MCCBhaingogumiri pazvinodiwa nemutemo chete asiwo inotsigira kugoverwa kwemagetsi kwakachengeteka uye kwakavimbika.

7. Mhedziso: Kusarudza Kwakakodzera Kudzivirira Dunhu Rakavimbika

Kusagona kushanda zvakanaka uye hunhu hwekufamba kwezvinhu ndizvo zvinhu zvakakosha pakusarudza MCCB. Kunzwisisa ma parameter aya kunobvumira mainjiniya nevatariri vezvivakwa kugadzira masisitimu emagetsi akachengeteka uye akavimbika.
Nekuenzanisa zvakanaka hunhu hwekudzivirira nezvinodiwa zvesisitimu, masangano anogona kuderedza njodzi, kuderedza nguva yekushanda, uye kuona kuti kushanda kwenguva refu kwagadzikana.

Mibvunzo Inowanzo bvunzwa

Mubvunzo 1: Ndeupi musiyano uripo pakati peIcu neIcs?
Icu ndiyo current yepamusoro inogona kukanganiswa ne breaker, nepo Ics ichimiririra current inogona kukanganiswa uye icharamba ichigadziriswa mushure mezvo.

Mubvunzo wechipiri: Zvishandiso zvemagetsi zviri nani pane zvemagetsi zvine simba remagetsi here?
Zvishandiso zvemagetsi zvinopa kunyatsorurama kwakanyanya uye zvigadziriso zvinogadziriswa, asi zvishandiso zvemagetsi zvinoramba zvakavimbika uye zvisingadhuri kune akawanda mashandisirwo.

Mubvunzo wechitatu: Hunhu hwerwendo hunokanganisa sei kurongeka kwehurongwa?
Ma trip curves akasarudzwa nemazvo anoita kuti pave nekugumburwa kwakasarudzwa, zvichiita kuti circuit isina kunaka iparadzwe pasina kukanganisa system yese.

Mubvunzo wechina: Sei kuputsa kugona kwakakosha pakusarudza MCCB?
Kusakwanisa kuputsa zvakakwana kunogona kukonzera breaker kutadza kushanda panguva ye short circuit, zvichikonzera njodzi huru dzekuchengetedza uye michina.

Mareferensi

• IEC 60947-2: Chigadziko chemagetsi chakaderera uye chinodzora - Macircuit breakers

• UL 489: Mabhuroko eDunhu Rakaumbwa, Maswichi eDunhu Rakaumbwa, uye Maburiro eDunhu Rakaumbwa

• IEEE Std 242 (Bhuku reBuff): Kudzivirirwa uye Kurongeka kweMasisitimu eSimba reMaindasitiri neMabhizinesi