Posankha panopa chingwe mtanda gawo - ntchitoyi ndi yosavuta, koma udindo

Aliyense zamagetsi wotha kudziwa kufunika kwa katundu kuyembekezera pa Kulumikizana ndi athanso kusankha gawo la chingwe panopa. Ntchito ndi yosavuta, izo amaphunzitsidwa kuthetsa aliyense bungwe luso mbiri, kuchokera ku mbali ukachenjede. Tiyenera kukumbukira kuti tisankhe chingwe, ndi bwino angaletse lalikulu kuposa mbali ang'onoang'ono.

Zomera mafakitale kuwerengetsera zonse zofunikira zimagwiridwa ndi akatswiri ndi apadera zomangamanga magetsi, kotero magawo maukonde kupewa pa mfundo za 'adzamvetsere, kuti tili ", ndi wokometsedwa ndi nkhani za ndalama kuchepetsa phunziro kwa malamulo luso. Pali muyezo malamulo a zipangizo zamagetsi kuno, ndipo iwo amakhala ndi akatswiri, kupanga kusankha gawo la chingwe panopa. RB (wailesi makhazikitsidwe Terms zipangizo) zifunika kuŵerenga magetsi-mlengi.

Mavuto pamene anthu samakhala oyenerera okwanira, kuyesa kupanga unsembe kapena Kulumikizana M'MALO m'nyumba zawo kapena kanyumba lapansi. Kusankha chingwe mtanda gawo - ndi udindo. Kupanga izo molondola, zikhoza kwambiri kuti tigwire ndi kuswa umphumphu wa pulasitala ndi kusintha waya lotengeka. About koipa-nkhani zochitika musati ngakhale ndikufuna kutchula mtundu wa moto.

Kumvetsa zotsatira za zolakwa kusankha chingwe ayenera kukhala bwino ndi malamulo wosavuta, zochokera Inde sayansi sukulu.

Choncho:

The magetsi kulimbikira wochititsa ndi mwachindunji njila kwa m'litali resistivity. The mtanda gawo M'malo mwake, zimakhudza iwo kuti n'zosiyana:

R = (ρ × L) / S,

kumene:

• R - kufunika resistivity, anayeza mu ohms;
• ρ - resistivity, i.e. kulimbikira kwa wochititsa mu zinthu 1 mamilimita kuti mamita 1 ndi ndime ^2;
• L - kutalika Kulumikizana, mamita;
• S - wochititsa mtanda yachigawo m'dera mamilimita ^2.

The resistivity losiyana mwa zitsulo zosiyana siyana. Mwachitsanzo, siliva, ndi za 0,016 Ohm X mamilimita ² / mamita ^2, pa pulatinamu - 0.1, ndi wa golide - 0,02. Komabe, chingwe mtanda gawo kusankha panopa si idzagwiritsa ntchito zitsulo zamtengo wapatali (chifukwa ndi bwino).

Tsopano kwa katundu. Kupewa kuchuluka kwa madzi uko idzayenda mu mawaya, ndi okwanira kudziwa mfundo yosavuta malamulo Ohm kwa dera ndi katundu resistive:

W = U X ine,

kumene:

• W - mphamvu amayezedwa Watts;
• U - mains voteji (apo chiri 220 volts);
• Ine - mtengo zikusinthira (ampere).

Ndipotu Volt-mikuza mawu n'zosiyana W, koma mawu a malo, lomwe likulamuliridwa ndi chikhalidwe cha katundu yogwira (nyali incandescent, heaters ndi zina zotero. P.), kusiyana akhoza kuwasamalira.

Kuwonjezera mphamvu za magetsi onse magetsi, ndi zotheka kuchuluka kwa katundu mu Watts zidzapangitsa kusankha gawo panopa pachingwecho.

Ndiye zonse ndi yosavuta. Popeza golide kapena mawaya pulatinamu nkomwe amagwiritsa ngakhale Abramovich chidwi ndi miyala ina wamba. Ngati kusankha analengedwa mu mtima wa mtengo chingwe, mkuwa, aliyense millimeter lalikulu (kapena monga anasonyeza zamagetsi "lalikulu") akhoza pochitika kuti mikuza mawu 10. Mu katundu wa zotayidwa wodzichepetsa 8 mikuza mawu, koma ndi wotsika mtengo.

Monga ulamuliro, kusankha nyumba pa chingwe-gawo mtanda panopa analengedwa mu mtima wa kukula zotayidwa waya ndi lalikulu theka (kubwereketsa) ndi polkvadrata (kuyatsa). Chipangizo chamagetsi kapena makasitomala ena mphamvu yambiri amafuna bushings osiyana chingwe wochititsa gawo ndi 2.5 mm ^2.

Nkofunika kukumbukira kuti kuphatikiza waya mkuwa ndi aluminum zosatheka. kupotoza Patapita wotaya katundu conductive.