Ip Degrees Of Protection - Siemens 6GK1 901-1GB01 System Manual

3.2

IP degrees of protection

General
Electrical equipment is normally surrounded by a protective casing.
The purpose of this casing includes
● Protection of persons from touching live components or moving parts
● Protection of equipment from intrusion of solid foreign bodies (solid body protection)
● Protection of equipment from ingress of water (water protection).
IEC 60529, EN 60529 /15/
The degree of protection specifies the degree to which the casing meets these
three protective functions.
The degrees of protection are specified uniformly in the "International Standard IEC 60529"
or in the identical European standard EN 60529.
The degree of protection of a casing is indicated by a code. The code consists of the letters
IP (International Protection) followed by a code number for contact, solid body and water
protection as shown below:
In some situations, the degree of protection is specified in even greater detail by adding
letters to the code numbers.
Scope of protection
The various degrees of protection are listed briefly in Tables 1-1 and 1-2. For more detailed
information on the individual ratings and the test conditions that must be fulfilled, please refer
to the standards listed above.
Table 3- 1
First number
0
1
2
3
4
5
6
Passive network components
System Manual, 02/2013, C79000-G8976-C282-01
(accidental contact protection)
Contact protection (short form)
Protection of equipment from intrusion of
solid foreign bodies
not protected
≥ 50.0 mm diameter
≥ 12.5 mm diameter
≥ 2.5 mm diameter
≥ 1.0 mm diameter
dust protected
dustproof
Installing network components in cabinets
3.2 IP degrees of protection
Protection of persons from access to
dangerous parts
not protected
back of hand
finger
tool
wire
wire
wire
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