Shenhai FRAGOR-Probatur
Different types of explosion-proof electrical equipment necessitate distinct casing protection standards. These standards, known as protection grades, denote the casing’s capability to block external objects from penetrating its interior and to provide resistance against water ingress. Secundum “Degrees of Protection Provided by Enclosures (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).
| Numerus | Praesidium range | Explicare |
|---|---|---|
| 0 | Nudari | Nulla specialis tutela contra aquam vel humorem |
| 1 | Ne stillæ maceretur | Perpendiculariter cadens stillæ (ut condensate) non faciam damnum ad electrica adjumenta |
| 2 | Cum iugo ad * 15 gradus, stillæ adhuc prohiberi maceretur | Cum appliance subsedit perpendiculariter to 15 gradus, madens aqua non damnum causa in appliance |
| 3 | Ne asperso aqua maceretur | Praeveni pluviam vel damnum ad electrica adjumenta ex aqua iniecto in partes cum perpendiculo minus, quam 60 gradus |
| 4 | Preoccupo sonantis aqua ab ingressu | Praeveni aquam spargens undique ab ingressu electrica adjumenta et damnum |
| 5 | Ne asperso aqua maceretur | Preoccupo humilis-pressionis aqua spargit quod perstat saltem 3 minuta |
| 6 | Ne magna fluctus maceretur | Ne nimia aqua spargit quod durat saltem 3 minuta |
| 7 | Praeveni immersionem aquae in immersionem | Preoccupo bibula effectus in 30 minuta aqua usque ad 1 meter profunde |
| 8 | Ne aqua immersione sub immersione | Preoccupo effectus continuus bibula in aqua cum profundo nimis 1 meter. Condiciones accuratae a fabrica pro unaquaque fabrica specificatae sunt. |
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 levels: level 0 signifies no protection, and level 6 indicates complete dust-tightness, with protection increasing progressively from 0 to 6. similiter, water protection spans 8 levels: level 0 denotes no protection, and level 8 indicates suitability for prolonged submersion, with protection increasing progressively from 0 to 8.