Selasa, 10 Oktober 2017

IP Rating



The IP rating normally has two (or three) numbers:
1. Protection from solid objects or materials
2. Protection from liquids (water)
3. Protection against mechanical impacts (commonly omitted, the third number is not a part of IEC 60529)
Example - IP Rating
With the IP rating IP 54, 5 describes the level of protection from solid objects and 4 describes the level of protection from liquids.
An "X" can used for one of the digits if there is only one class of protection, i.e. IPX1 which addresses protection against vertically falling drops of water e.g. condensation..
IP First number - Protection against solid objects
0 No special protection
1 Protected against solid objects over 50 mm, e.g. accidental touch by persons hands
2 Protected against solid objects over 12 mm, e.g. persons fingers
3 Protected against solid objects over 2.5 mm (tools and wires)
4 Protected against solid objects over 1 mm (tools, wires, and small wires)
5 Protected against dust limited ingress (no harmful deposit)
6 Totally protected against dust
   
IP Second number - Protection against liquids
0 No protection
1 Protection against vertically falling drops of water e.g. condensation
2 Protection against direct sprays of water up to 15o from the vertical
3 Protected against direct sprays of water up to 60o from the vertical
4 Protection against water sprayed from all directions - limited ingress permitted
5 Protected against low pressure jets of water from all directions - limited ingress
6 Protected against temporary flooding of water, e.g. for use on ship decks - limited ingress permitted
7 Protected against the effect of immersion between 15 cm and 1 m
8 Protects against long periods of immersion under pressure
   
IP Third number - Protection against mechanical impacts (commonly omitted, the third number is not a part of IEC 60529)
0 No protection
1 Protects against impact of 0.225 joule
(e.g. 150 g weight falling from 15 cm height)
2 Protected against impact of 0.375 joule 
(e.g. 250 g weight falling from 15 cm height)
3 Protected against impact of 0.5 joule 
(e.g. 250 g weight falling from 20 cm height)
4 Protected against impact of 2.0 joule 
(e.g. 500 g weight falling from 40 cm height)
5 Protected against impact of 6.0 joule 
(e.g. 1.5 kg weight falling from 40 cm height)
6 Protected against impact of 20.0 joule 
(e.g. 5 kg weight falling from 40 cm height)



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