7 lub tswv yim thaum txhim kho lub 'meter' box enclosure
1. Lub thawv 'meter' yuav tsum muaj kev ntsuas los nag.
2. Lub insulated tooj liab hlau rau kev xaim ntawm txhua lub 'meter' yuav tsum tsis pub tsawg tshaj 4mm2, thiab RS485 voj hlau yuav tsum tsis pub tsawg tshaj 0.5mm2.
3. Cov hlau nruab nrab ntawm txhua lub ntsuas hluav taws xob hluav taws xob hauv lub thawv ntsuas ntau lub ntsuas hluav taws xob yuav tsum tau nruab sib cais thiab tsis sib koom.
4. Insulated thiab nplaim hluav taws xob nyob ntawm tej yuav tsum tau siv nyob rau hauv lub metering lub thawv, thiab cov xim code yuav tsum: cov theem hlau yog daj, ntsuab thiab liab; cov hlau nruab nrab yog dub; PE hlau yog daj thiab ntsuab ob xim hlau.
5. Qhov deb ntawm qhov nkag ntawm chav tsev yog ntau dua 12 hli, qhov sib cais hluav taws xob ntau dua 10 hli, thiab qhov tob tob ntawm qhov hluav taws xob qhov hluav taws xob yog ntau dua 8 hli.
6. Cov khoom siv hluav taws xob siv los ntawm cov khoom siv yuav tsum tau teeb tsa hauv chav hloov khoom nkag.
7. Cov kab hluav taws xob txuas hluav taws xob kuj tseem siv rau hauv lub thawv ntsuas, cov xaim xaim xaim tuaj thiab tawm ntawm nws tus kheej, kev tsim cov kab hluav taws xob tsim nyog, thiab kev siv tes ua dhau los.
