Tiêu đề TCVN 4255-2008.pdf ✅

TCVN 4255 : 2008 Ldin6idau TCVN 4255 : 2008 thay the TCVN 4255 : 86; TCVN 4255 : 2008 hoan toan tuang duang v(ji IEC 60529: 2001; TCVN 4255 : 2008 do Ban ky thuat tleu chuan TCVNITC/E1 May ai~n va khi cu ai~nbien soan, Tong cue Tieu chuan 80 IUdng Chat IUC;1ngde nqh], B9 Khoa h9C va Cong ngh$ conq bo. ~..-..~.,._._..._,,-.,--;_ .•_._---., TCVNVI~~ TIEU C.~UA~CHAT llIQNG VIeT NAM ___ PHONGXUAT BAN, IN & PHAT HANH PhOng 602, Tang 6, Nha A So 8 Hoang Quoe Vi~t,Nghia 00, Cau Giiy, Ha Noi Tel: 024.37564269 Fax: 024.38361 771 Email: [email protected] Web: www.vsqi.gov.vn KhOng dliC/c in, sao ehyp TCVN neu chU'a dllC!C phep eua V5QI 4
- ~ -' TIEU CHUAN QUaC GIA TCVN 4255 : 2008 Xuat ban Ian 2 Cap bao v~ bang va nqoai (rna IP) Degrees of protection provided by enclosures (IP Code) Tleu chuan nay ap dunq d~ phan loai cap bao v$ bang vo nqoal doi vdi cac thiet b] di$n c6 di$n ap danh dlnh kh6ng Vvc;rtqua 72,5 kV. Tieu chuan nay nham dira ra: a) Cac dlnh nghTave cap bao v$ bang vo nqoal cua cac thiet b] di$n lien quan den: 1) Bao v$ con ngvdi chong tiep can den b(>phan nguy hi~m narn ben trong vo nqoai; 2) Bao v$ thiet b] narn ben trong vo nqoai chong sir xarn nhap cua cac vat ran W ben nqoai; 3) Bao v$ thiet b] nam ben trong vo nqoal khoi cac anh hVdng c6 hai do su xarn nhap cua ruroc: b) Cac ky hieu doi voi cac cap bao v$ nay. c) Cac yeu cau doi voi moi cap dV<;lCky hi$u. d) Cac thl't nghi$m can thlfc hi$n d~ ch(Jng to rang vo ngoai dap (tng dV<;lccac yeu cau cLla tieu chuan nay. TUng ban ky thu~t cl;Jth~ c6 trach nhi$m xac dlnh ph~m vi va cach th(Jc phan lo~i dV<;lcsl't dl;Jngtrong tieu chuan va cach dlnh nghTa"vo ngoai" cho cac thiet bl. Tuy nhien, cOng khuyen cao rang, doi voi cap phan lo~i d§ cho, thl't nghi$m kh6ng dV<;lckhac so vOi thl't nghi$m qui dlnh trong tieu chuan nay. Neu can thiet, tieu chuan san pham lien quan c6 th~ neu cac yeu cau bo sung. Hvong dan chi tiet can qui dlnh trong tieu chuan san pham lien quan dV<;lcneu d Phl;Jll;JcB. Doi voi lo~i thiet bl cl;Jth~, ban ky thu~t c6 th~ qui dlnh cac yeu cau khac vOi dieu ki$n la tei thi~u phai dam bao dV<;lccung m(>tm(Jc d(>an toano Tieu chuan nay chi lien quan den vo ngoai d tat ca cac khia c~nh thich h<;lpd~ sl't dl;Jngtheo dlj kien nhV qui dlnh trong tieu chuan san pham lien quan va, tren Cluan di~m v~t li$u va gia cong, dam bao rang cap baa v$ cong be dV<;lCduy tri trong cac dieu kien sU' dl:mg binh thU'dng. 5
TCVN 4255 : 2008 Tieu chuan nay cOng ap dunq cho vo nqoai rang vdi dieu kien la yeu cau tha nghi$m chung dllc;1cdap ung va dip bao v$ duoc chon la phu hop vdi loai thiet b] can bao v$. Bien phap d~ bao v$ ca vo Ian thiet b] ben trong vo khoi cac anh hllang hoac dieu kien ben nqoai nhu: - va cham ve co: - an man; - dung moi an man (VIdu, chat long dung trong cat 99t); - narn rncc: - con trunq; - birc xi? mat troi; - dong bang; - am lIdt (VIdu, do ngt1l1gtu): - rno: trllang de gay n6; va bao v$ chong cham tdi b¢ phan chuy~n d¢ng nguy hi~m tCt ben nqoai vo (nhu quat) la nhLing van de can bao v$ de cap trong tieu chuan san pham lien quan. Tam bao v$ ben nqoai khong gan vdi vo nqoai va chlldng ngi?i v~t chi dllc;1Ccung cap VI Iy do an toan cho con ngllai khong dllc;1Ccoi la m¢t phan cua vo ngoai va khong dllc;1Cde c~p trong tieu chuan nay. Cac tai li$u vi$n dan sau day la can thiet cho vi$c ap dl)ng tieu chuan. Doi vdi cac tai li$u co ghi nam cong bo thl ap dl)ng cac ban dllc;1cneu. Doi vdi cac tai li$u khong ghi nam cong bo, ap dl)ng cac phien ban mdi nhat (k~ ca cac saa d6i). TCVN 7699-1: 2007 (IEC 60068-1: 1988), Tha nghi$m moi trllang - Phan 1: Gidi thi$u chung va hlldng dan TCVN 7699-2-£8: 2007 (IEC 60068-2-68: 1994), Tha nghi$m moi trllang - Phan 2: Tha nghi$m - Tha nghi$m L : Bl)i va cat IEC 60050-195 : 1988, International Electrotechnical Vocabulary (lEV) - Part 195: Earthing and protection against electric shock (Tu Vl/ng ky thu~t di$n quoc te (IEV) - Phan 195: Noi dat va bao v$ chong di$n gi~t) IEC 60050(826):1982, International Electrotechnical Vocabulary (lEV) - Part 826: Electrical installations of buildings (Tu vl,fng ky thu~t di$n quoc te (lEV) - Phan 826: UlP d?t di$n cho cac toa nha) IEC 60071-2: 1996, Insuiation co-ordination - Part 2: Application guide (Phoi hc;1Peach di$n - Phan 2: HUdng dan ap dung) 6