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) |
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0 |
No special protection |
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1 |
Back of hand, Fist |
Large foreign bodies, diam. >50mm |
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2 |
Finger |
Medium-sized foreign bodies, diam. >12 |
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3 |
Tools and wires etc with a thickness >2.5mm |
Small foreign bodies, diam. >2.5mm |
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4 |
Tools and wires etc with a thickness >1mm |
Granular foreign bodies, diam. >1mm |
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5 |
Complete protection, (limited ingress permitted) |
Dust protected; dust deposits are permitted, but their volume must not affect the function of the unit. |
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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 |
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0 |
No special protection |
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1 |
Water dripping/falling vertically |
Condensation/Light rain |
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2 |
Water sprayed at an angle (up to 15º degrees from the vertical) |
Light rain with wind |
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3 |
Spray water (any direction up to 60º degrees from the vertical) |
Heavy rainstorm |
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4 |
Spray water from all directions, (limited ingress permitted) |
Splashing |
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5 |
Low pressure water jets from all directions, (limited ingress permitted) |
Hose down, residential |
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6 |
High pressure jets from all directions, (limited ingress permitted) |
Hose down, commercial. |
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7 |
Temporary immersion, 15 cm to 1m |
Immersion in tank |
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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 |
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0 |
No special protection |
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1 |
Protected against 0.225J impact |
eg. 150g weight falling from 15cm height |
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2 |
Protected against 0.375J impact |
eg. 250g weight falling from 15cm height |
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3 |
Protected against 0.5J impact |
eg. 250g weight falling from 20cm height |
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4 |
Protected against 2.0J impact |
eg. 500g weight falling from 40cm height |
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5 |
Protected against 6.0J impact |
eg. 0.61183kg weight falling from 1m height |
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6 |
Protected against 20.0J impact |
eg. 2.0394kg weight falling from 1m height |