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Installing Network Components in Cubicles
8-3
SIMATIC NET Twisted-Pair and Fiber-Optic Networks
C79000-G8976-C125-02
Degree of Protection
The various degrees of protection are listed briefly in Tables 8-1 and 8-2. For more
detailed information on the individual ratings and the test conditions that must be
fulfilled, please refer to the standards listed above.
Table 8-1 Contact Protection (short form)
First
Number
Protection of equipment from
intrusion of solid foreign
bodies
Protection of people from
access to dangerous parts
0 not protected not protected
1 50.0 mm diameter back of hand
2 12.5 mm diameter finger
3 2.5 mm diameter tool
4 1.0 mm diameter wire
5 dust protected wire
6 dustproof wire
Table 8-2 Water Protection (short form)
Second Number Protection of equipment from ingress of water
0 not protected
1 vertically falling drops of water
2 falling water (15° from vertical)
3 sprayed water
4 splashwater
5 jet water
6 strong jet water
7 temporary immersion
8 long period of immersion
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