Cov xwm txheej tiv thaiv kev tiv thaiv yog txhais raws li kev tiv thaiv hluav taws xob thoob ntiaj teb (IEC) cov qauv kev tiv thaiv (feem ntau qhia cov khoom tiv thaiv txawv teb chaws txawv teb chaws, dej. Cov qib no feem ntau yog sawv cev los ntawm IP (Ingress kev tiv thaiv) code, qhov twg "sawv daws yuav tiv thaiv cov khoom txawv teb chaws txawv teb chaws txawv teb chaws.
Cov qib kev tiv thaiv muaj xws li:
1. IP20: Muab kev tiv thaiv tsuas yog tiv thaiv cov khoom txawv teb chaws txawv dua 12,5 mm thiab tsis yog dej.
2. IP21: muab kev tiv thaiv tawm tsam cov khoom txawv teb chaws txawv dua 12,5 mm thiab kuj muaj kev tiv thaiv tawm tsam cov dej ntas qis poob qis.
3. IP22: muab kev tiv thaiv tawm tsam cov khoom txawv teb chaws txawv dua 12,5 mm thiab tseem muaj kev tiv thaiv tiv thaiv dej hiav txwv ntawm li 15 degrees los ntawm ntsug.
4. IP23: muab kev tiv thaiv tawm tsam cov khoom txawv teb chaws txawv dua 2.5 hli thiab tseem muaj kev tiv thaiv tiv thaiv dej ntws ntawm li 60 degrees ntawm ntsug.
5. IP44: Muaj kev tiv thaiv tawm tsam cov khoom txawv teb chaws cov khoom loj dua 1 hli thiab dej txaws.
6. IP54: Muaj kev tiv thaiv tawm tsam cov khoom txawv txawv teb chaws, plua plav, thiab dej txaws.
7. IP55: Muaj kev tiv thaiv tawm tsam cov khoom txawv txawv teb chaws, plua plav, thiab dej txaws.
8. IP65: Muaj kev tiv thaiv tawm tsam cov khoom txawv txawv teb chaws, plua plav, thiab qis- qhov dav hlau dej.
9. IP66: Muaj kev tiv thaiv tawm tsam cov khoom txawv teb chaws cov khoom, hmoov av, thiab siab- qhov dav hlau dej siab.
10. IP67: Muaj kev tiv thaiv tawm tsam cov khoom txawv txawv teb chaws, plua plav, thiab kev raus dej hauv dej ib zaus hauv.
11. IP68: Muaj kev tiv thaiv tawm tsam cov khoom txawv txawv teb chaws, plua plav, thiab ntev hauv dej. Lub sijhawm tshwj xeeb ntawm kev tiv thaiv yog teev los ntawm cov khw.