Insait long ilektrikel enjiniaring, ol wok bilong putim ol 'grounding wires' bilong ol 'distribution cabinet' i stret long sefti bilong ol ikwipmen na ol wokmanmeri. Taim yumi bungim nesenel standet GB/T 7251.1-2023 wantaim ol praktikel kes, ol bikpela samting em olsem:
1. Graunding Waia Seleksen Kraeteria
Ol i mas yusim ol yelo-grinpela kopa kondakta, na ol i mas sekim tupela taim 'cross-sectional area': ol i skelim 'current carrying capacity' long rot bilong fomula S=I / (K × J) long meksua olsem i no gat melting aninit long ol bikpela wok kondisen; ol samting bilong strongim masin i nidim olsem ol 'cabinet door jumpers' i mas bikpela moa o wankain olsem 4mm2, na ol bikpela graun waia i mas bikpela moa o wankain olsem 16mm2. Insait long wanpela projek, ol i no yusim gut 2.5mm2 waia insait long 16A seket na dispela i mekim na 'insulation carbonization' i kamap, na dispela i soim olsem em i bikpela samting long makim gut ol samting. Long wanpela kain 'scenario calculation model', olsem, taim ol i planim wanpela 35mm2 kebol long 40 digri, ol i mas stretim 'safe current carrying capacity' long temperaja (140A → 132A → 119A).
2. Ol stia tok bilong putim
1) Prefabrikesen bilong ol braket: Ol braket i mas stap 1-1.5 mita longwe long wol, 250-300 mm long graun, na holim 10-15 mm spes long wol.
2) Ol Spesifikesen bilong Weldim: Ol 'flat steel overlaps' I bikpela moa o wankain olsem 2-pela taim bikpela bilong en i mas weldim long tripela sait, na ol raunpela 'steel overlaps' I bikpela moa o wankain olsem 6-pela taims diamita i mas weldim long tupela sait. Ol weld i mas kisim marasin bilong lukautim ol long 'corrosion'.
3) Crimping: Ol i mas krimpim ol waia we i gat planti '-strand wantaim ol 'copper lugs'. Dispela dai i mas bihainim GB/T 14315-2008. Olsem, ol i mas yusim wanpela heksagonal dai long 35 mm2 waia (indentesen i bikpela moa o wankain olsem 0.4 mm). Bihain long ol i pasim ol waia, ol i mas winim wanpela 'tensile test'.
4) Kontinuiti Assurens: Kebinet na graun busbar i mas konektim long planti hap, wantaim wanpela resistens bilong liklik o wankain olsem 0.1 Ω.
5) Makim Spesifikasen: Ol i mas penim olgeta kebol wantaim ol yelo-grinpela mak, na ol terminal i mas gat nem oltaim.
6) Ol spesel samting: Ol i mas yusim wanpela 'double grounding system' long ol hap we i no inap pairap, wantaim wanpela 'resistance' we i no winim o wankain olsem 4 Ω.
3. Ol Ki Akseptens Sekpoint
1) Wok we i hait: Lukluk long sekim kwaliti bilong weldim namel long daunbilo bilong kebinet na ain bilong faundesen;
2) Equipotential Bonding: Sekenderi 'circuit grounding' i mas konektim i go long 'main grounding busbar';
3) Sekim ol samting: Sekim setifikesen bilong kondakta na tiknes bilong koting (olsem, 'zinc coating' i bikpela moa o wankain olsem 40μm);
4) Funksenel Testing: Antap long kontinuiti tes, wanpela 2000V/1min pawa frikwensi 'standand voltage' tes i mas kamap.
4. Ol bikpela samting bilong menesim wok na mentenens
1) Sekim long olgeta kwata: Testim 'grounding resistance' na sekim ol waia bilong 'door hinge jumper';
2) Anti-Korosen Tritmen: Putim 'conductive anti-corrosion peint long ol ausait ikwipmen long olgeta tupela yia, na long olgeta yia long ol ples klostu long nambis;
3) Sistem Apgred: Taim 'capacity expansion' i winim 'original design value' long 30%, ol i mas apgredim 'grounding cable' wantaim.
Sapos yu bihainim stret ol standet pasin na yusim 'closed-loop control' long olgeta step, stat long taim yu makim i go inap long wok mentenens, dispela bai mekim yu gat strongpela sefti difens long lektrik.