NEMA Classifications-NEMA enclosure qauv
Tsuas yog tsis muaj plua plav thiab tsis muaj dej, NEMA' cov qauv kuj suav nrog kev tawg-pov thawj (IP code tsuas yog muaj plua plav thiab dej). Kev sib txuas lus (ze lossis sib npaug) kev sib raug zoo ntawm nws cov chav tiv thaiv enclosure thiab IP code.
IP 30, 31, 32, 64, 55, 66
NEMA 1 2 3R 3 12 thiab 13 4 thiab 4X
Lub koom haum National Electrical Manufacturers Association (NEMA) yog ib lub chaw tsim khoom hauv Asmeskas' lub koom haum uas tsim cov khoom lag luam cov qauv kev qhia tshwj xeeb rau cov khoom siv hluav taws xob.
Guarantor Laboratory (UL) siv NEMA cov qauv kev ua tau zoo thiab cov qauv kev sim ua cov lus qhia rau kev ntsuas hluav taws xob thiab ntawv pov thawj.
NEMA cov qauv:
NEMA 1: Feem ntau siv sab hauv tsev, qib kev tiv thaiv uas yuav tsum tau muab yog kev tiv thaiv kev tiv thaiv ntawm cov cuab yeej kaw thiab qhov txwv tsis pub poob plua plav (IP 20).
2: Rau kev siv sab hauv tsev, qib kev tiv thaiv uas yuav tsum tau muab yog txwv dej thiab plua plav tiv thaiv (IP 22).
3: Rau kev siv sab nraum zoov, qib kev tiv thaiv yuav tsum tau muab cua thiab plua plav, tiv thaiv nag thiab lawg; cov dej khov ntawm lub thawv kaw tsis tuaj yeem ua rau nws puas tsuaj (IP 55).
3R: Rau kev siv sab nraum zoov, qib kev tiv thaiv uas yuav tsum tau muab yog los nag thiab lawg tiv thaiv; cov dej khov hauv lub thawv kaw tsis tuaj yeem ua rau nws puas tsuaj (IP 24).
3S: Rau kev siv sab nraum zoov, qib kev tiv thaiv yuav tsum tau muab cua thiab plua plav, tiv thaiv nag thiab lawg; Thaum muaj dej khov, cov txheej txheem sab nraud tseem tuaj yeem ua haujlwm tau (IP 55).
4: Rau kev siv sab hauv tsev lossis sab nraum zoov, qib kev tiv thaiv uas yuav tsum tau muab yog txaws, cua, plua plav thiab dej nag, thiab lub hose yog tiv thaiv ncaj qha los ntawm dej; cov dej khov ntawm lub thawv kaw tsis tuaj yeem ua rau nws puas tsuaj (IP 66).
4X: Nws tsim kev puas tsuaj thiab tiv thaiv corrosion (IP 66).
6: Rau kev siv sab hauv tsev lossis sab nraum zoov, qib kev tiv thaiv yuav tsum tau muab rau lub sijhawm luv luv hauv cov dej tob uas tsis muaj kev tiv thaiv dej; cov dej khov rau ntawm lub thawv kaw tsis tuaj yeem ua rau nws puas tsuaj.
6P: Rau kev siv sab hauv tsev lossis sab nraum zoov, qib kev tiv thaiv yuav tsum tau muab rau kev nkag mus ntev hauv cov dej sib sib zog nqus uas tsis muaj kev tiv thaiv dej.
11: Rau kev siv sab hauv tsev, cov khoom siv sib khi yuav tsum tau muab cov roj tso rau hauv kev tiv thaiv kev tiv thaiv corrosion ntawm cov kua dej corrosive thiab gases.
12, 12K: Rau kev siv sab hauv tsev, qib kev tiv thaiv yuav tsum tau muab rau cov plua plav, tshauv thiab cov kua dej uas tsis muaj corrosive (IP 54).
13: Rau kev siv sab hauv tsev, qib kev tiv thaiv uas yuav tsum tau muab yog cov tshuaj tsuag dej, roj thiab tsis muaj corrosive coolant tiv thaiv (IP 54).
