Kodi pali ubale wotani pakati pa gawo lagawo la chingwe ndi momwe chingwecho chilili, ndipo njira yowerengera ndi yotani?

Mawaya nthawi zambiri amatchedwa "zingwe".Ndi zonyamulira zotumizira mphamvu zamagetsi ndipo ndizofunika kwambiri popanga malupu pakati pa zida zamagetsi.Zomwe zimafunikira pakufalitsa waya nthawi zambiri zimapangidwa ndi mkuwa kapena aluminiyamu.

Mtengo wa mawaya omwe amagwiritsidwa ntchito pazinthu zosiyanasiyana ndi wosiyana.Mwachitsanzo, zitsulo zamtengo wapatali sizimagwiritsidwa ntchito ngati mawaya.Mawaya amathanso kugawidwa malinga ndi momwe angagwiritsire ntchito.Mwachitsanzo, ngati magetsi ndi aakulu, tidzagwiritsa ntchito mawaya apamwamba kwambiri.

Choncho, mawaya ndi osinthika kwambiri muzogwiritsira ntchito zenizeni.Choncho, tikasankha kugula, ndi ubale wotani wosapeŵeka womwe ulipo pakati pa waya wa waya ndi wamakono.

Mgwirizano pakati pa waya wa waya ndi wamakono

M'moyo wathu watsiku ndi tsiku, mawaya wamba ndi ochepa kwambiri.Chifukwa chake ndi chakuti pakali pano amanyamula akamagwira ntchito ndi ochepa kwambiri.M'dongosolo lamagetsi, kutulutsa komweku kwa mbali yotsika ya thiransifoma nthawi zambiri kumakhala kuchuluka kwazomwe zimagwiritsidwa ntchito ndi wogwiritsa ntchito, kuyambira mazana angapo amperes mpaka masauzande a amperes.

Ndiye timasankha lalikulu waya awiri kuti tikwaniritse mphamvu overcurrent okwanira.Mwachiwonekere, makulidwe a waya amafanana ndi apano, ndiko kuti, kukula kwamakono, kukulirakulira kwa gawo la waya.

Ubale wapakati pa gawo la waya ndi wapano ndiwodziwikiratu.Kuthekera kwa waya komweko kumakhudzananso ndi kutentha.Kutentha kwapamwamba, kuwonjezereka kwa resistivity kwa waya, kukana kwambiri, komanso kugwiritsa ntchito mphamvu kwambiri.

Choncho, posankha, timayesetsa kusankha waya wokulirapo pang'ono kuposa momwe amachitira panopa, zomwe zingathe kupeŵa zomwe zili pamwambazi.

Chigawo chodutsa waya nthawi zambiri chimawerengedwa motsatira njira iyi:

Waya wamkuwa: S = (IL) / (54.4 △U)

Waya wa aluminiyamu: S = (IL) / (34 △U)

Kumene: I - Kuchuluka kwamakono kumadutsa pawaya (A)

L - Kutalika kwa waya (M)

△U - Kutsika kwamagetsi kovomerezeka (V)

S - Malo ozungulira waya (MM2)

Zapano zomwe zimatha kudutsa gawo la waya zitha kusankhidwa molingana ndi kuchuluka kwa zomwe zikufunika kuchita, zomwe zimatha kuzindikirika motsatira jingle:

Nyimbo ya waya yodutsa magawo ndi yapano

Khumi ndi zisanu, zana ndi ziwiri, ziwiri zisanu zitatu zisanu malire anayi, makumi asanu ndi awiri mphambu zisanu ndi zinayi kasanu kawiri ndi theka, kuwerengera kwa waya wamkuwa.

Kwa mawaya a aluminiyamu omwe ali pansi pa 10 mm2, chulukitsani mamilimita apakati ndi 5 kuti mudziwe ampere yamakono ya katundu wotetezeka.Kwa mawaya pamwamba pa 100 masikweya millimeters, chulukitsani gawo lozungulira ndi 2;kwa mawaya pansi pa 25 square millimeters, chulukitsani ndi 4;kwa mawaya pamwamba 35 lalikulu millimeters, kuchulukitsa ndi 3;kwa mawaya pakati pa 70 ndi 95 masikweya millimeters, chulukitsani ndi 2.5.Kwa mawaya amkuwa, pita mulingo, mwachitsanzo, ma 2.5 masikweya mamilimita a waya wamkuwa amawerengedwa ngati mamilimita 4.(Zindikirani: Zomwe zili pamwambazi zitha kugwiritsidwa ntchito ngati kuyerekezera ndipo sizolondola kwambiri.)

Komanso, ngati m'nyumba, kumbukirani kuti mawaya mkuwa ndi pachimake mtanda gawo gawo la zosakwana 6 mm2, ndi otetezeka ngati panopa pa lalikulu millimeter si upambana 10A.

Pakatikati pa 10 metres, kachulukidwe ka waya ndi 6A/mm2, 10-50 metres, 3A/mm2, 50-200 metres, 2A/mm2, ndi zosakwana 1A/mm2 mawaya opitilira 500 metres.Kutsekeka kwa waya kumayenderana ndi kutalika kwake komanso mosagwirizana ndi mainchesi ake a waya.Chonde tcherani khutu kuzinthu zamawaya ndi mainchesi a waya mukamagwiritsa ntchito magetsi.Kuteteza mawaya kwambiri kuti asatenthetse mawaya ndikupangitsa ngozi.