Kusiyana Pakati pa DC Fuse Holder ndi Miniature Circuit Breaker

TheChosungira fuse ya DCnthawi zambiri imayikidwa mu dera ndikugwiritsidwa ntchito pofuna kuonetsetsa chitetezo cha dera panthawi ya ntchito yofunika kwambiri yamagetsi.Ma fuse a DC ndi otetezera omwe angapereke chitetezo chafupipafupi, ndipo amagwiritsidwa ntchito kwambiri m'makina ogawa mphamvu, machitidwe olamulira, ndi zina zotero. Fuseyi makamaka imagwira ntchito pachitetezo chachifupi komanso chitetezo chochuluka kwambiri.

Mwambiri,DC miniature circuit breakersitha kugwiritsidwa ntchito kugawa mphamvu zamagetsi kapena kuyambitsa ma asynchronous motors pafupipafupi, komanso kuteteza zingwe zamagetsi ndi ma motors.Ngati wophwanya dera la DC akumana ndi vuto lolemetsa kwambiri, lalifupi, kapena kuwonongeka kwakanthawi kogwira ntchito, limangodula dera.Ntchito ya wowononga dera ndi yofanana ndi kuphatikiza kwa fuse switch ndi overheating relay.

Mfundo yodziwika bwino ya fyuzi ya DC ndi mini circuit breaker: imatha kudula dera bwino pamene dera likulephera, kotero tinganene kuti zonsezi ndi zipangizo zotetezera dera, zomwe zimagwiritsidwa ntchito kwambiri kuteteza wowononga dera kuti asakule kwambiri komanso kuti azizungulira.

Kodi Ntchito ya DC Fuse Holder ndi Mini Circuit Breaker ndi chiyani?

Malire a DC mini circuit breakers ndi osamveka.Kuchuluka kwazomwe zimagwiritsidwa ntchito nthawi zambiri zimagawika m'magawo oyendetsa ma voltages apamwamba komanso otsika ma voltage.Nthawi zambiri, timatcha ma voltages pamwamba pa 3KV ngati ma voliyumu othamanga kwambiri, ndipo ma voliyumu otsika kwambiri amatchedwanso ma switch odziwikiratu.Ndi chida chamagetsi chomwe sichingokhala ndi chosinthira pamanja, komanso chimakhala ndi zida zodzitetezera zokha pakutayika kwamagetsi, kutsika kwamagetsi, kuchulukirachulukira komanso kufupipafupi.Ma circuit breaker a DC amagawidwanso kukhala ophwanya ma circuit universal ndi ma mold circuit breakers.Nthawi zambiri, palibe chifukwa chosinthira magawo ndi zigawo pambuyo poti cholakwika chawonongeka, ndipo akhala akugwiritsidwa ntchito kwambiri.

Pomwe chogwirizira fuse ya DC ndichitetezo chapano chomwe chimateteza zida zamagetsi kudzera pamagetsi.Pambuyo pamakono kupitirira mtengo wotchulidwa kwa nthawi inayake, kutentha komwe kumapangidwa ndi fuseyi palokha kumalimbikitsa kusungunuka kwa kusungunuka, motero kuswa dera.Ma fuse a DC nthawi zambiri amagwiritsidwa ntchito kwambiri pamakina ogawa magetsi ocheperako komanso makina owongolera ndi zida zamagetsi.Monga chitetezo chachifupi komanso chanthawi yayitali, ndi chimodzi mwazinthu zodzitchinjiriza zomwe zimagwiritsidwa ntchito kwambiri.

Chifukwa chake, chowotcha cha DC chingathe m'malo mwa fusesi, bola ngati momwe ma fuse amagwirira ntchito pakati pa fuse ndi chophwanyira dera ndizofanana ndi zomwe zidavotera.Koma ngati chodulira chigawocho chikugwiritsidwa ntchito ngati fusesi, ndizovuta pang'ono?

Kodi Pali Kusiyana Kotani Pakati pa DC Fuse Holder ndi Mini Circuit Breaker?

Kufanana pakati pa zonyamula fuse za DC ndi zowononga madera ndikuti amatha kuzindikira chitetezo chachifupi.Mfundo ya fuse ndi: kugwiritsa ntchito panopa kuyenda kupyolera mwa kondakitala kumatenthetsa kondakitala, atafika pa malo osungunuka a conductor, woyendetsa adzasungunuka.Chifukwa chake, dera limatha kulumikizidwa kuti liteteze zida zamagetsi ndi mizere kuti zisawotchedwe.Ndiko kudziunjikira kwa kutentha, kotero chitetezo chochulukira chimatha kuzindikirika, chisungunukocho chikatenthedwa, kusungunula kuyenera kusinthidwa.Pamene mphamvu yamagetsi mu dera ili pafupi ndi katundu wa fuse yomwe imagwiritsidwa ntchito kwa nthawi yaitali, fuseyo imatenthedwa pang'onopang'ono mpaka itasakanikirana.Kuphatikizika kwa fuse ndi chifukwa cha kuphatikizika kwa nthawi ndi nthawi, zomwe zimagwira ntchito yoteteza mzere.Ndi zotayidwa.

Wowononga dera la DC amathanso kuzindikira kachipangizo kakang'ono komanso chitetezo chokwanira cha mzere, koma mfundo ndi yosiyana.Imazindikira chitetezo chophwanyira dera kudzera pamaginito omwe ali pansi pano (electromagnetic tripper), ndikuzindikira chitetezo chochulukira kudzera pakutentha kwapano.Pamene panopa mu dera likuwonjezeka mwadzidzidzi ndikupitirira katundu wa woyendetsa dera, woyendetsa dera adzatsegula.Ndi chitetezo chowonjezera mphamvu yanthawi yomweyo ya dera, monga ngati kutayikira kuli kwakukulu, kofupika, kapena mphamvu yanthawi yomweyo ndi yayikulu.Chifukwa chake chikadziwika, chikhoza kusinthidwa ndikupitiriza kugwiritsidwa ntchito.

Ngakhale ntchito ndi ntchito za DC circuit breaker ndi fusezi ndizofanana, pali kusiyana kwakukulu, monga kusiyana kwa njira zotetezera, kuthamanga kwa ntchito, nthawi zogwiritsira ntchito, ndi mfundo zogwirira ntchito.Kusiyana pakati pa fuse ndi chowotcha dera ndi motere:

1. Kusiyana kwa njira yotetezera: njira yotetezera fusesi ya DC imatengera mawonekedwe a fuse.Pambuyo pochotsa cholakwacho, fuseyi iyenera kusinthidwa kuti ibwezeretse mphamvu, choncho zimakhala zovuta kwambiri kuti zisungidwe.Njira yotetezera ya DC circuit breaker imatenga mawonekedwe oyenda.Cholakwikacho chikachotsedwa, mphamvu yamagetsi yokhazikika imatha kubwezeretsedwanso potseka, kotero kukonza ndi kubwezeretsa kudzakhala kosavuta kuposa fusesi.

2. Kusiyana kwa liwiro la zochita: liwiro la fusesi la fusesi ya DC limatha kufika pamlingo wa microsecond (μs), zomwe zikutanthauza kuti liwiro lake ndi lothamanga kwambiri kuposa la wowononga dera.Kutha kumeneku nthawi zambiri kumakhala koyenera pazofunikira zodulira mwachangu Kuyika ndikugwiritsa ntchito momwe zingakhalire.Liwiro loyenda la chophwanyira dera lili mu milliseconds (ms).Zitha kuwoneka kuti ndizochepa kwambiri kuposa fusesi, choncho ndizoyenera pazochitika zomwe kuthamanga kwachangu sikuli kwakukulu kwambiri.

3. Kusiyana kwa kuchuluka kwa nthawi zomwe zimagwiritsidwa ntchito: fusesi ya DC iyenera kusinthidwa pambuyo poteteza zolakwika kamodzi ndipo kusungunuka kwaphulika, ndipo woyendetsa dera wa DC akhoza kugwiritsidwanso ntchito nthawi zambiri.Komabe, kuchokera kumalingaliro a kuswa kwa dera, fusesiyo idzakhala yamphamvu kuposa yodutsa dera, ndipo nthawi yomweyo imakhala yowonjezereka.Nthawi zambiri, wophwanya dera amaikidwa pamsewu wa nthambi, ndipo fuseji imayikidwa pamsewu waukulu nthawi zambiri kuti ikhale ndi chitetezo chachiwiri.

4. Kusiyana kwa mfundo zogwirira ntchito: Mfundo yogwirira ntchito ya fusesi ya DC imachokera makamaka pa kutentha kwa panopa.Pakalipano ikadutsa mtengo wokhazikika (zosintha zosiyana za fusezi zimakhalanso zosiyana), fuse yamkati idzawombera kuti iwononge dera ndikuteteza Zida siziwotchedwa ndi mkulu wamakono.Ngakhale pali mitundu yambiri ya ophwanya ma DC ndipo mfundo zake zimasiyananso.Nthawi zambiri, chisangalalo cha koyilo yapaulendo chimayamba chifukwa cha kuchuluka kwamagetsi komwe kumapangitsa wodutsa dera kuchitapo kanthu.Kumene, wosweka dera sangathe kukwaniritsa ntchito basi, komanso pamanja kulamulira ntchito kutsegula ndi kutseka kwa wosweka dera.

Nthawi zina zapadera, pamakhala malamulo omveka bwino ofunikira omwe amayenera kugwiritsa ntchito ma fuse a DC, monga chitetezo chowongolera ma elevator, kotero kuti ophwanya ma DC sangathe kusinthiratu ma fuse.Komanso, nthawi yachidule ya gawo la thyristor wophwanya dera ndi yochepa kwambiri.Pachifukwa ichi, kuthamanga kwa woyendetsa dera sikungathe kukwaniritsa zofunikira zafupipafupi, kotero mphamvu yosakanikirana ya fuseyi yadziwikanso.Fuse ya DC yakhala ikugwiritsidwa ntchito kwambiri pomanga zoyambira zofewa, kutembenuka pafupipafupi ndi machitidwe ena ogawa.