Protection categories Sealing of the enclosure 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 The object probe (a sphere IP X1 Protected against vertically Vertically falling drops shall have objects with a diameter of 50 mm 50 mm in diameter) must not falling water drops no harmful effects. and greater penetrate fully1). IP 2X Protected against solid foreign The object probe (a sphere IP X2 Protected against vertically Vertically falling drops must not objects with a diameter of 12.5 mm in diameter) must not falling water drops when the have any harmful effects when 12.5 mm and greater penetrate fully1). The articulated enclosure is tilted up to 15°. the enclosure is tilted up to 15° test finger may penetrate up to its on either side of the vertical. length of 80 mm, but adequate distance must be adhered to. IP 3X Protected against solid foreign The object probe (a sphere IP X3 Protected against Water sprayed at an angle of up objects with a diameter of 2.5 mm 2.5 mm in diameter) must not spraying water to 60° on either side of the verti- and greater penetrate fully1). cal shall have no harmful effects. IP 4X Protected against solid foreign The object probe (a sphere IP X4 Protected against splashing Water splashed on the enclosure objects with a diameter of 1 mm 1.0 mm in diameter) must not water from any direction shall have no and greater penetrate fully1). harmful effects. IP 5X Dust-protected The ingress of dust is not fully IP X5 Protected against water jets Water directed at the enclosure prevented, but dust may not enter from any direction in a jet shall to such an extent as to impair have no harmful effects. satisfactory operation of the device or safety. IP 6X Dust-tight No ingress of dust at a partial IP X6 Protected against powerful Water directed at the enclosure vacuum of 20 mbar inside the water jets from every direction in a power- enclosure. ful jet shall have no harmful effects. IP X7 Protected against the effects of Water must not ingress to such temporary immersion in water 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/ Water directed at the enclosure steam-jet cleaning2) 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. 3 - 83 Technical System Catalogue/Climate control
Technical System Catalogue Climate Control
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