3 nema and ip
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Degrees Of Protection Provided By
Enclosures For Electrical Equipment
IP Code IEC Standard IEC 529 (1990)EN 60529 now introduces temperature stabilized IP ratings
I P
The First numeral indicates
protection against access to
dangerous parts and protection of internal equipment against the
ingress of solid foreign objects
The second numeral indicates
protection of internal equipmentagainst harmful ingress of water
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Summary
Up until IP66 then the higher the number then the higher the
level of protection
IP67 & IP68 must be viewed differently
IP67 is not a higher specification than IP66 it is a
DIFFERENT specification.
A product that passes IP67 may NOT pass IP66 but may pass
IP65 and should be noted as IP65/67
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NEMA types of enclosures are listed below:
Definitions
[ from NEMA 250-2003]
In Non-Hazardous Locations, the specific enclosure Types, their applications, and the environmental conditions they are designed to protect
against, when completely and properly installed, are as follows:Type 1 Enclosures constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts and to provide a
degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt).
Type 2 Enclosures constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree
of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt); and to provide a degree of protection with
respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing).
Type 3 Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; toprovide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and windblown dust); to
provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow); and that will be
undamaged by the external formation of ice on the enclosure.
Type 3R Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts;
to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt); to provide a degree of
protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow); and that will be undamaged by theexternal formation of ice on the enclosure.
NEMA detail courtesy of
National Electrical Manufacturers Association Approved by NEMA Enclosures Section 1300 N. 17th Street, Suite 1752 Nov
2005 Rosslyn, VA 22209
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Typical NEMA and NEC types of enclosures
Type 13 Enclosures constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a
degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and circulating dust, lint, fibers,
and flyings); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light
splashing); and to provide a degree of protection against the spraying, splashing, and seepage of oil and non-corrosive coolants.
NEMA detail courtesy of National Electrical Manufacturers Association Approved by NEMA Enclosures Section 1300 N. 17th Street, Suite 1752 Nov 2005 Rosslyn, VA
22209
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IP 54IP 54
IP 54
IP 56
IP 52
IP 67
IP 52
33R
3S
4 and 4X
5
6 and 6P
12 and 12K
IPNEMA
Table of comparisonNEMA classification and IP degree of protection
NOTE THESE ARE APPROXIMATIONS – NOTDIRECT COMPARISONS
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Table of comparisonNEMA classification and IP degree of protection