Does anyone know if there is a summary of the IP (Ingress Protection) ratings that could be used for reference... i.e. when someone says they have product designed to IP67, what does that mean?

Are there conversions from IP ratings to NEMA classifications?

Thanks.

 

Both MTL and P+F have nice posters that include this info. I guess you can also find it on their web sites.

Jonas Berge
SMAR
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www.smar.com
Learn fieldbus at your own pace: www.isa.org/fieldbuses

 

Yes - google for "iec 529 NEMA"

Meir

 

<p>Ingress protection (IP) ratings are always 2 numerical digits, where the first refers to protection against solids (including hands/fingers) and the second liquds. Tables of NEMA ratings, IP ratings and a rough comparison of the two follow:

<p>NEMA Ratings:
1 General purpose, indoor, prevent accidental contact
2 Dripproof, indoor
3 Dusttight, raintight, sleet-resistant
3R Rainproof
4 Watertight (as from a hose)
4X Watertight, corrosion resistant
6 Submersible up to 6 feet for 30 minutes
7 Explosion proof, air break equipment
8 Explosion proof, oil immersed equipment
12 Industrial, indoor, dustight and driptight
<pre>
IP Ratings:
First Digit Second Digit
Protection Against Protection Against
0 None None
1 Incidental access by Vertical liq rops
hands
2 Incidental access by Liq drops 15 deg
fingers from vertical
3 Objects > 2.5 mm Spray 60 deg from
vertical
4 Objects > 1 mm Spray/splash any
direction
5 Dust in large Low pressure
quantites water jets
6 Complete protection Heavy seas, hi
from dust pressure jets
7 n/a Immersion
8 n/a Submersion
</pre>
<p>Rough comparison between NEMA and IP ratings:
NEMA IP
Rating Code
1 IP20
2 IP21
3 IP54
4 IP55
4X IP55
5 IP50
6 IP68
7 N/A (EExIId)
8 N/A (EExIId)
9 IP65
10 N/A (EExIId)
12 IP52