Na injinịa eletriki, nkọwa nrụnye maka nkesa kabinet grounding wires metụtara akụrụngwa na nchekwa ndị ọrụ. Ijikọta ọkọlọtọ mba GB/T 7251.1-2023 na ikpe bara uru, isi ihe bụ ndị a:
1. Grounding Wire Nhọrọ Criteria
Ekwesịrị iji ndị na-eduzi ọla kọpa na-acha odo odo{{0}green green, na obe - mpaghara mpaghara ga-enwerịrị okpukpu abụọ{2}}: a na-agbakọ ikike ibu ugbu a site na iji usoro S=I / (K × J) iji hụ na ọ dịghị agbaze n'okpuru ọnọdụ arụ ọrụ siri ike; Ihe ndị chọrọ ike n'ibu chọrọ ka ndị na-awụba ọnụ ụzọ kabinet dị ukwuu karịa ma ọ bụ ha nhata 4mm², na wires ndị na-eme ka ala dị ukwuu karịa ma ọ bụ hà nhata 16mm². N'ime oru ngo, iji waya 2.5mm² eme ihe n'ụzọ na-adịghị mma na sekit 16A butere mkpuchi mkpuchi carbon, na-egosipụta mkpa ọ dị nkwenye nhọrọ. Maka ụdị ịgbakọ ihe atụ, dịka ọmụmaatụ, mgbe e liri eriri 35mm² na ogo 40, a ga-edozi ikike ibu nchekwa dị ugbu a maka okpomọkụ (140A → 132A → 119A).
2. Ntuziaka nwụnye
1) Prefabrication Bracket: Ekwesịrị ịgbanye oghere 1-1.5 mita n'akụkụ mgbidi, 250-300 mm site na ala, ma debe oghere 10-15 mm site na mgbidi ahụ.
2) Nkọwa ịgbado ọkụ: Flat steel overlaps Karịrị ma ọ bụ hà nhata ugboro abụọ ka obosara kwesịrị ịgbanye n'akụkụ atọ, na nchara gburugburu na-agbakọ karịa ma ọ bụ nha 6 ugboro dayameta kwesịrị welded n'akụkụ abụọ. Ekwesịrị iji nchedo corrosion agwọ welds.
3) Mbipu: Multi- wires ekwesịrị ka ejiri ọla kọpa kpachie. Ọnwụ kwesịrị ịgbaso GB/T 14315-2008. Dịka ọmụmaatụ, a ga-eji ọnwụ hexagonal maka waya 35 mm² (ihe nrịbama karịrị 0.4 mm ma ọ bụ nhata). Mgbe crimps gachara, waya ga-agafe ule tensile.
4) Nkwenye na-aga n'ihu: A ga-ejikọta kabinet na ụgbọ ala ala n'ọtụtụ ebe, na-eguzogide ihe na-erughị ma ọ bụ hà 0.1 Ω.
5) Nkọwapụta akara: Ekwesịrị iji eriri odo na-acha odo odo{1}} na eriri niile ga-edobe akara na-adịgide adịgide.
6) Ihe ngosi pụrụ iche: Ekwesịrị iji sistemu ala okpukpu abụọ mee ihe na mgbawa{1}} ebe mgbawa, nwere nguzogide nke na-erughị ma ọ bụ ha nhata 4 Ω.
3. Ebe nlele nnabata isi
1) Ọrụ zoro ezo: Lekwasị anya na nyochaa àgwà ịgbado ọkụ n'etiti ụlọ kabinet na ntọala ọwa ígwè;
2) Nkwekọrịta nha nhata: Mgbakọ sekit nke abụọ ga-ejikọrịrị na bọsbar nke isi ala;
3) Nnwale ihe: Lelee asambodo onye nduzi na mkpuchi mkpuchi (dịka ọmụmaatụ, mkpuchi zinc Karịrị ma ọ bụ nha 40μm);
4) Nnwale arụ ọrụ: Na mgbakwunye na ule na-aga n'ihu, a chọrọ 2000V / 1min ugboro ugboro na-eguzogide ule voltaji.
4. Isi Isi Ọrụ na Nlekọta Nlekọta
1) Nyocha nke nkeji iri na ise: Nyochaa nguzogide ala ma nyochaa eriri ọnụ ụzọ hinge jumper wires;
2) Ọgwụgwọ mgbochi - corrosion: Tinye ihe mgbochi corrosion - corrosion na akụrụngwa dị n'èzí kwa afọ abụọ, na kwa afọ n'akụkụ osimiri;
3) nkwalite Sistemu: Mgbe mgbasawanye ikike karịrị uru nhazi mbụ site na 30%, a ga-ebuli eriri ala n'otu oge.
Ịgbaso usoro ọkọlọtọ na itinye n'ọrụ mechiri emechi{0} akara aka na ọkwa ọ bụla, site na nhọrọ ruo na mmezi, ga-eme ka nchekwa nchekwa eletrik siri ike.