NEMA 3R

[SSheikh]

Could anyone tell me how NEMA defines the NEMA 3R equipment? IEC has IP standards e.g. IP 52,54,56 and each IP standard has a technical definition. Does NEMA have similar definition for the NEMA 3R equipment? If so, then what is that definition?
Please help.
Thanks,

 

[jbartos]

Suggestion: Try
Reference:
1. NEMA Standard 250-1997 "Enclosures for Electrical Equipment (1000 Volts Maximum)"
Enclosure NEMA 3R is tested for
1. Rod entry in clause 5.2
2. Rain in clause 5.4
3. External icing in clause 5.6
4. Outdoor corrosion protection in clause 5.9
5. Gasket in clause 5.14
Available from: National Electrical Manufacturers Association, 1300 N 17th Street, Rosslyn, VA 22209, USA

http://nema.org/standards/