Echebe uwa: nchekwa eletropriborov

Echebe n'ala a na-atụle ga-akpan mere Ọdụdọ njikọ n'ala nke adịghị ndụ metal akụkụ, nke, n'ihi na mmechi nke ngwaọrụ ụlọ nwere ike ịghọ ndụ. Nke a pụtara na a random eletriki njikọ nke adịghị ndụ dara akụkụ nke ike osisi na conductive ọcha, na voltaji nwekwara ike ime, n'ihi na ihe atụ, àmụmà.

Na-echebe ụwa eliminates ize ndụ nke electric ujo mgbe emetụ ndụ akụkụ nke metal ahụ ma ọ bụ akụrụngwa nke, n'ihi na nke earthing pụtara nyere.

Ga-na-akwanyere ùgwù si arụ ọrụ na-echebe earthing, nke e mere maka ịrụ ọrụ nke ọma nke eletriki nrụnye, nakwa dị ka si n'ala iji chebe ya àmụmà. Site na-arụ ọrụ nwere ike na-agụnye grounding na-anọpụ iche okwukwo nke generator asọfe nke ike transformer na ngwaọrụ ndị ọzọ.

N'ihi grounding nke ngwaọrụ ị chọrọ iji eke ngwá ọrụ na ihe: metal na mmiri ọkpọkọ na-enweghị mgbochi corrosion mkpuchi, ewepu pipelines na-agbawa agbawa ma ọ bụ flammable, haruru ma ọ bụ mmiri mmiri. Adabara grounding ụzọ cable sheathing, valves na metal ọcha nke mesikwuru ihe ụlọ ma ọ bụ ihe owuwu. Dị nnọọ mara na ụwa a ga-enwe a na njikọ na ụwa. -Adabara metal dowels ma ọ bụ casing. Ma iferi aluminum eduzi na cable sheathing a machibidoro iwu iji nke a ihe onwunwe.

Na enweghị eke ụwa electrodes ma ọ bụ ma ọ bụrụ na ha nwere a elu-eguzogide ike ga-eji na-wuru, na nke ike a na-echebe grounding. Ha na-mere ígwè akuku agba 5h5h0,5 cm ogologo nke 2-3 mita, otu size nke ígwè ọkpọkọ na a dayameta nke 5 cm ígwè okirikiri agba (ogologo 5 m, dayameta 12,0 - 14,0 mm). Eji akụkụ (electrodes) ga-mikpuru n'ala n'ebe dị anya n'ebe onye ọ bụla ọzọ nke 3-5 mita, ihe niile dị n'eluigwe na ụwa ga-ejikọrịrị n'etiti a ígwè warara, obe ngalaba nke 40x4 mm.

The ejikọta warara na-enịm ke ékpè na a omimi nke 0,70 mita, otu anya n'elu bụ elu nsọtụ nke electrodes. All ọcha na-ejikọrọ na ịgbado ọkụ. The ọnụ ọgụgụ nke electrodes na gbakọọ, dabeere na ala resistivity, electrode size, kefriza omimi na ihe ndị ọzọ.

Echebe grounding eletriki voltaji ka ọtụtụ puku B nwere ike haziri iji metal owuwu nke ụlọ (na ọnụnọ nke a pụrụ ịdabere na njikọ nke circuit ọcha), wirings ígwè akpa, aluminum cable n'ọbọ, dara ọkpọkọ (ma e wezụga n'ihi Central kpo oku usoro, na nsị pipeline). metal trays, igbe, enclosures na busbars efu waya na sekit na sekit (echebe ụwa na-anọpụ iche) a na-eji.

Dị ka na-echebe na-eduzi efu a machibidoro iwu iji metal na mkpa shells edu wires na cables. Air AC ifu site na-anọpụ iche na-eduzi ya, nke na-tọrọ n'otu na-akwado ka ndị na-adọ na-eduzi.

Otú ọ dị, n'anya ọ bụghị mgbe nile na-ekwe nkwa ndị dị mkpa nchekwa n'ihi na ndị mmadụ na kọntaktị na eletriki echichi. Mgbe ụfọdụ, na ebe ihe ize ndụ nke edere, tinyere re-eji na-echebe earthing ma ọ bụ nchekwa shutdown na-eji. Echebe anọpụ iche wires a machibidoro iwu itinye maka edere nke eletriki ngwa, udia on ọzọ e, ka ha nwere ike-agbanyụrịrị maka mmezi.

Iji na-echebe ngwaọrụ gụnyere circuit Oké mmali, anabata ndị leakage ugbu a. The ojiji nke ndị a ngwaọrụ na ụlọ nwere ike melite ọkụ nchekwa.