SAFIERY UNIVERSITY
IP STANDARDS SETTING ENVIROMENTAL REQUIREMENTS
This technical article summarizes IP ratings.
s = solids, l=liquids and i= impact (optional)
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First Index – Foreign Bodies Protection, Solids |
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| Index | Protection against Human/Tool Contact | Protection against solid objects (foreign bodies) |
| 0 | No special protection | |
| 1 | Back of hand, Fist | Large foreign bodies, diam. >50mm |
| 2 | Finger | Medium-sized foreign bodies, diam. >12 |
| 3 | Tools and wires etc with a thickness >2.5mm | Small foreign bodies, diam. >2.5mm |
| 4 | Tools and wires etc with a thickness >1mm | Granular foreign bodies, diam. >1mm |
| 5 | Complete protection, (limited ingress permitted) | Dust protected; dust deposits are permitted, but their volume must not affect the function of the unit. |
| 6 | Complete protection | Dust-proof |
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Second Index – Water Protection, Liquids |
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| Index | Protection against water | Protection from condition |
| 0 | No special protection | |
| 1 | Water dripping/falling vertically | Condensation/Light rain |
| 2 | Water sprayed at an angle (up to 15º degrees from the vertical) | Light rain with wind |
| 3 | Spray water (any direction up to 60º degrees from the vertical) | Heavy rainstorm |
| 4 | Spray water from all directions, (limited ingress permitted) | Splashing |
| 5 | Low pressure water jets from all directions, (limited ingress permitted) | Hose down, residential |
| 6 | High pressure jets from all directions, (limited ingress permitted) | Hose down, commercial. eg. Ship decks |
| 7 | Temporary immersion, 15 cm to 1m | Immersion in tank |
| 8 | Permanent Immersion, under pressure | For use on Titanic recovery vehicle |
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Third Index – Impact Protection, Impact |
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| Index | Protection against impact | Equivalent mass impact |
| 0 | No special protection | |
| 1 | Protected against 0.225J impact | eg. 150g weight falling from 15cm height |
| 2 | Protected against 0.375J impact | eg. 250g weight falling from 15cm height |
| 3 | Protected against 0.5J impact | eg. 250g weight falling from 20cm height |
| 4 | Protected against 2.0J impact | eg. 500g weight falling from 40cm height |
| 5 | Protected against 6.0J impact | eg. 0.61183kg weight falling from 1m height |
| 6 | Protected against 20.0J impact | eg. 2.0394kg weight falling from 1m height |
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