Data Sheet

3 - 83
Technical System Catalogue/Climate control
Protection categories
To ensure fault-free cooling operation, the enclosure should be sealed. A minimum protection category of IP 54 should be
ensured. The IP classification to IEC 60 529 describes resistance to the ingress of solid or liquid substances. The first digit in
the IP designation refers to solid objects (dust), and the second to water.
Protection against foreign objects Moisture protection
Description Explanation Description Explanation
IP 1X
Protected against solid foreign
objects with a diameter of 50 mm
and greater
The object probe (a sphere
50 mm in diameter) must not
penetrate fully
1)
.
IP X1
Protected against vertically
falling water drops
Vertically falling drops shall have
no harmful effects.
IP 2X
Protected against solid foreign
objects with a diameter of
12.5 mm and greater
The object probe (a sphere
12.5 mm in diameter) must not
penetrate fully
1)
. The articulated
test finger may penetrate up to its
length of 80 mm, but adequate
distance must be adhered to.
IP X2
Protected against vertically
falling water drops when the
enclosure is tilted up to 15°.
Vertically falling drops must not
have any harmful effects when
the enclosure is tilted up to 15°
on either side of the vertical.
IP 3X
Protected against solid foreign
objects with a diameter of 2.5 mm
and greater
The object probe (a sphere
2.5 mm in diameter) must not
penetrate fully
1)
.
IP X3
Protected against
spraying water
Water sprayed at an angle of up
to 60° on either side of the verti-
cal shall have no harmful effects.
IP 4X
Protected against solid foreign
objects with a diameter of 1 mm
and greater
The object probe (a sphere
1.0 mm in diameter) must not
penetrate fully
1)
.
IP X4
Protected against splashing
water
Water splashed on the enclosure
from any direction shall have no
harmful effects.
IP 5X
Dust-protected The ingress of dust is not fully
prevented, but dust may not enter
to such an extent as to impair
satisfactory operation of the
device or safety.
IP X5
Protected against water jets Water directed at the enclosure
from any direction in a jet shall
have no harmful effects.
IP 6X
Dust-tight No ingress of dust at a partial
vacuum of 20 mbar inside the
enclosure.
IP X6
Protected against powerful
water jets
Water directed at the enclosure
from every direction in a power-
ful jet shall have no harmful
effects.
IP X7
Protected against the effects of
temporary immersion in water
Water must not ingress to such
an extent as to cause harmful
effects when the enclosure is
immersed in water under stand-
ardised pressure and time con-
ditions.
9K
Water during high-pressure/
steam-jet cleaning
2)
Water directed at the enclosure
from every direction under
greatly increased pressure must
not have any adverse effects.
1)
The full diameter of the object probe must not pass through an opening of the enclosure.
2)
Code number 9K to DIN EN 40 050, part 9.
Sealing of the enclosure