IP Rating This standard describes a system for classifying the degree of protection provided by the enclosure of electrical/electronic equipment. Developed by the European Committee for Electro-Technical Standardization (CENELEC), these standards are designed to numerically rate an electrical product on the level of protection its enclosure provides. By assigning different number codes, the degree of protection of the product can be quickly and easily identified. In the IP67 code, for example, IP signifies International Protection, the first digit 6 indicates the level of protection from solid objects, and the second digit 7 denotes the level of protection from liquids. See the tables below for the details. DEGREE OF PROTECTION FROM LIQUIDS (Second Number in the Code) Second # Description 0 Not protected 1 Protected against vertically falling water drops 2 Protected against vertically falling water drops tilted up to 15° 3 Protected against spraying water 4 Protected against splashing water 5 Protected against water jets 6 Protected against powerful water jets 7 Protected against the effects of temporary immersion in water, up to 1 m 8 Protected against the effects of continuous immersion in water, beyond 1 m DEGREE OF PROTECTION (First Number in the Code) First # Description 0 No special protection 1 Protected against solid foreign objects of 50 mm diameter and greater, e.g. human hands 2 Protected against solid foreign objects of 12.5 mm diameter and greater, e.g. human hands 3 Protected against solid foreign objects of 2.5 mm diameter and greater, e.g. tools, thick wire 4 Protected against solid foreign objects of 1.0 mm diameter and greater, e.g. wires, screws 5 Ingress of dust is not totally prevented, but dust shall not penetrate in a quantity to interfere with satisfactory operation of the apparatus or to impair safety. 6 No ingress of dust, complete protection IP67 Protection 16 Glossary 16.3 www.hannainst.com |
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