Appendix; Protection Classes According To Ip Code - Beckhoff EP1957-0022 Operating Instructions Manual

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Appendix

9.1

Protection classes according to IP code

The levels of protection are defined and divided into different classes in the IEC 60529 standard (DIN EN
60529). The designation follows the scheme below.
st
1 digit: Protection against ingress of dust and access to hazardous parts
st
1 digit Meaning
0 Non-protected
1 Protection against access to hazardous parts with back of hand. Protection against ingress of
solid foreign objects = 50 mm diameter
2 Protection against access to hazardous parts with a finger. Protection against ingress of solid
foreign objects = 12.5 mm diameter
3 Protection against access to hazardous parts with a tool. Protection against ingress of solid
foreign objects = 2.5 mm diameter
4 Protection against access to hazardous parts with a wire. Protection against ingress of solid
foreign objects = 1 mm diameter
5 Protection against access to hazardous parts with a wire. Protection against ingress of dust.
Ingress of dust is not prevented completely, although the quantity of dust able to penetrate is
limited to such an extent that the proper function of the device and safety are not impaired
6 Protection against access to hazardous parts with a wire. Dust-proof. No ingress of dust
nd
2 digit: Protection against ingress of water*
nd
2 digit Meaning
0 Non-protected.
1 Protection against dripping water.
2 Protection against dripping water when housing tilted up to 15°.
3 Protection against spraying. Water sprayed at an angle of up to 60° from vertical must not have
any adverse effect.
4 Protection against splashing. Water splashing against the housing from any direction must not
have any adverse effects.
5 Protection against jetting.
6 Protection against powerful jetting.
7 Protection against the effects of temporary immersion. The quantity of water being able to
penetrate if the housing is submerged in water for 30 minutes at a depth of 1 m must not have
any adverse effects.
*) These protection classes only define protection against water, not against other liquids.
EP1957-0022 and EP1957-2222 Version: 2.0.0
Appendix
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