Shenhai Explosion-Ubungqina
Iindidi ezahlukeneyo zezixhobo zombane ezingenoqhushumba zifuna imigangatho eyahlukeneyo yokhuseleko lwecasing. Le migangatho, aziwa njengamabakala okhuseleko, denote the casing’s capability to block external objects from penetrating its interior and to provide resistance against water ingress. Ngokutsho kwe “Amanqanaba oKhuseleko abonelelwa ziiNdawo ezivaliweyo (IP Code)” (GB4208), a casing’s protection grade is denoted by the IP code. This code comprises the initials IP (International Protection), followed by two numerals and sometimes optional additional letters (which are occasionally omitted).
| Inani | Uluhlu lokhuseleko | Cacisa |
|---|---|---|
| 0 | Ayikhuselekanga | Akukho khuselo olukhethekileyo kumanzi okanye ukufuma |
| 1 | Thintela amathontsi amanzi ukuba angangeni | Amathontsi amanzi awela ngokuthe nkqo (ezifana condensate) ayiyi kubangela umonakalo kwizixhobo zombane |
| 2 | Xa ithambekile 15 izidanga, amathontsi amanzi asenokuthintelwa ukuba angatshoni | Xa isixhobo sithambeke ngokuthe nkqo ukuya 15 izidanga, ukuthontsiza kwamanzi akuyi kubangela umonakalo kwisixhobo |
| 3 | Thintela amanzi atshiziweyo ukuba angangeni | Thintela imvula okanye umonakalo kwizixhobo zombane owenziwe ngamanzi atshizwe kwicala lendlela nge-engile ethe nkqo engaphantsi kwe. 60 izidanga |
| 4 | Thintela ukutshiza kwamanzi ukuba angangeni | Thintela ukuchaphaza kwamanzi ukusuka macala onke ukuba angangeni kwizinto zombane kwaye enze umonakalo |
| 5 | Thintela amanzi atshiziweyo ukuba angangeni | Thintela ukutshiza okuphantsi koxinzelelo lwamanzi oluhlala ubuncinci 3 imizuzu |
| 6 | Thintela amaza amakhulu ukuba angangeni ngaphakathi | Thintela ukutshiza okugqithisileyo kwamanzi okuhlala ubuncinane 3 imizuzu |
| 7 | Thintela ukuntywiliselwa emanzini ngexesha lokuntywiliselwa | Thintela iziphumo zokufunxa kwi 30 imizuzu emanzini ukuya 1 imitha ubunzulu |
| 8 | Thintela ukuntywiliselwa emanzini ngexesha lokutshona | Thintela iziphumo eziqhubekayo zokufunxwa emanzini ngobunzulu obugqithileyo 1 imitha. Iimeko ezichanekileyo zichazwe ngumvelisi kwisixhobo ngasinye. |
The first numeral indicates the degree of protection against solid objects, while the second numeral represents the water resistance level. Protection against solid objects ranges across 6 amanqanaba: inqanaba 0 signifies no protection, and level 6 indicates complete dust-tightness, with protection increasing progressively from 0 ukuya 6. Ngokufanayo, water protection spans 8 amanqanaba: inqanaba 0 denotes no protection, and level 8 indicates suitability for prolonged submersion, with protection increasing progressively from 0 ukuya 8.