(1) siv ntawm cov hwjchim tis lawv yuav tsum teev ib tug hais tis thawv, tis thawv, mus kav ntawv, thiab qhov kev txiav txim "ib-feeb-qhib" poob lawm graded, thiab ib lub qauv "peb-tier tis" daim ntawv raws li txoj cai.
(2) tis zog rau kev siv cov thawv tis, mus kem plahaum qhov chaw yuav tsum yog tsim nyog. Chav tsev neeg li kaw transformer los yog fais fab tuag tau muab lus Department, rau kev taw qhia txog fais fab tuag. Tis kem yuav muab ntsia tau rau hauv khoom hluav taws xob los ntsaws cov concentration tus txheeb ze ntawm qhov chaw, kom ib kuas peb-theem loads. Nruab ib kem mus yuav tsum nyob rau qhov chaw, muaj tshwm sim thiab tej yam mob thaum uas kaw tau los tiv thaiv txog rau tej cuab yeej hluav taws xob.
(3) hauv order rau ib ntus fais fab tis lawv tshuav peb-theem load, hluav taws xob hwj huam siv qhov chaw thiab teeb pom kev zoo yuav tsum ob fais circuits, hwj huam tis hauv siab thiab tsis qias neeg tis kem yuav tsum tau teem.
(4) cov hluav taws xob siv nyob rau hauv qhov chaw siv yuav tsum muaj nws tus kheej mus dlhau lub thawv.
(5) tis lub thawv nyob rau hauv lub thawv thiab teeb tau txhua theem yuav tsum ua raws li yuav tsum muaj kev ruaj ntseg, cov mus yuav tsum khij, tooj box. Nres rau ntawm lub box tis yuav muab txiav tawm ntawm cov hwjchim mov, rooj muab tub. Kem tis nyob ruaj ruaj yuav tsum teem lub laj kab thiab nco nag-tau kab mob li cas.
(6) tis thawv thiab txawv xwm tis. Raws li cov GB/T20641-2006 ntawm tsawg-voltage switchgear thiab tswj cov khoom xwb raws li plhaub npliag