Siemens SINAMICS S 1PH7, Configuration Manual

Page: 52 / 244

Mechanical properties of the motors
3.2 Degree of protection acc. to EN 60034-5
1PH7 induction motors (Machine tools)
52
Configuration Manual, (APH7W), 04/2009, 6SN1197-0AD72-0BP0
3.2
3.2
Degree of protection acc. to EN 60034-5
Degree of protection designation
The degree of protection designation in accordance with EN 60034-5 (IEC 60034-5) is
described using the letters "IP" and two digits (e.g. IP64).
IP = International Protection
1st digit = protection against ingress of foreign bodies
2nd digit = protection against harmful ingress of water
Since most cooling lubricants used in machine tools and transfer machines are oily, creep-
capable, and/or corrosive, protection against water alone is insufficient. The motors must be
protected by suitable covers.
Attention must be paid to providing suitable sealing of the motor shaft for the selected
degree of protection for the motor.
NOTICE
Depending on these ambient conditions- such as the chemical properties of dusts or the
cooling media used at the installation site - it is only conditionally possible to evaluate the
suitability of the motor for the particular environment using the degree of protection (e.g.
electrically conductive dusts or aggressive cooling medium vapors or liquids).
In these cases, the motor must be additionally protected using the appropriate measures.
NOTICE
Liquid must be prevented from collecting on the motor shaft as well as jets of oil (or are not
permissible at all) - even for versions with radial shaft sealing ring.