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What is the meaning of the Degrees of protection by Schneider Electric IP , IK and NEMA ?

 The European standard EN 60529 dated October 1991, IEC publication 529 (2nd edition - November 1989), defines a coding system (IP code) for indicating the degree of protection provided by electrical equipment enclosures against accidental direct contact with live parts and against the ingress of solid foreign objects or water. This standard does not apply to protection against the risk of explosion or conditions such as humidity, corrosive gasses, fungi or vermin. Certain equipment is designed to be mounted on an enclosure which will contribute towards achieving the required degree of protection (for example, control devices mounted on an enclosure). Different parts of the equipment can have different degrees of protection (for example, an enclosure with an opening in the base). Standard NF C 15 100 (May 1991 edition), section 512, table 51 A, provides a cross-reference between the various degrees of protection and the classification of environmental conditions, relating to the selection of equipment according to external factors. Practical guide UTE C 15-103 contains tables showing the specifications required for electrical equipment (including minimum degrees of protection), according to the locations in which they are installed.

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