Matsayin Kariya na Fashe-Tabbatar Kayan Wutar Lantarki

Nau'o'in nau'ikan kayan lantarki masu tabbatar da fashewar abubuwa suna buƙatar ƙayyadaddun ka'idodin kariyar casing. Waɗannan ma'auni, aka sani da kariya maki, nuna iyawar casing don toshe abubuwa na waje shiga ciki da kuma ba da juriya ga shigar ruwa.. A cewar hukumar “Digiri na Kariya da Yake bayarwa (Lambar IP)” (GB4208), lambar kariya ta casing tana nuna lambar IP. Wannan lambar ta ƙunshi baƙaƙen IP (Kariya ta Duniya), biye da lambobi biyu kuma wasu lokuta ƙarin haruffa na zaɓi (wanda a wasu lokuta ake tsallakewa).

Lamba	Kewayon kariya	Bayyana
0	Mara kariya	Babu kariya ta musamman daga ruwa ko danshi
1	Hana digon ruwa tsomawa a ciki	Fadowar ruwa a tsaye (kamar condensate) ba zai haifar da lahani ga na'urorin lantarki ba
2	Lokacin karkata a 15 digiri, Har yanzu ana iya hana ɗigon ruwa daga shiga	Lokacin da na'urar ta karkata a tsaye zuwa 15 digiri, diga ruwan ba zai haifar da lahani ga na'urar ba
3	Hana fesa ruwa daga shiga	Hana ruwan sama ko lalata na'urorin lantarki da ruwan da aka fesa a cikin kwatance tare da kwana na tsaye wanda bai kai ba. 60 digiri
4	Hana watsa ruwa shiga	Hana fantsama ruwa daga kowane bangare shiga cikin kayan lantarki da haifar da lalacewa
5	Hana fesa ruwa daga shiga	Hana feshin ruwa mara ƙarfi wanda zai dawwama aƙalla 3 mintuna
6	Hana manyan raƙuman ruwa daga shiga	Hana yawan feshin ruwa wanda zai dawwama na akalla 3 mintuna
7	Hana nutsewar ruwa yayin nutsewa	Hana tasirin jiƙa don 30 mintuna a cikin ruwa har zuwa 1 zurfin mita
8	Hana nutsewar ruwa yayin nutsewa	Hana ci gaba da jikewa sakamako a cikin ruwa tare da zurfin wuce gona da iri 1 mita. Mai ƙira ya ƙayyade ingantattun yanayi don kowace na'ura.

Lamba na farko yana nuna matakin kariya daga abubuwa masu ƙarfi, yayin da lamba ta biyu ke wakiltar matakin juriya na ruwa. Kariya daga daskararrun abubuwa ya bambanta 6 matakan: matakin 0 yana nuna babu kariya, da daraja 6 yana nuna cikakkiyar ƙura, tare da kariya tana ƙaruwa da sauri daga 0 ku 6. Hakazalika, kariya ta ruwa ya kai 8 matakan: matakin 0 yana nuna babu kariya, da daraja 8 yana nuna dacewa don tsawaita nutsewa, tare da kariya tana ƙaruwa da sauri daga 0 ku 8.