Michael,
Thanks for the response. I am familiar with many of the European
requirements for Hazardous Areas and am also aware of the US Division and Zone
classifications (NEC 500 & 505?). However we have not come across NEMA 7
before. Now that I know it is genuine, I can dig deeper.
Do you know whether NEMA 250 (??) is available to download or is it purchased
through the usual suppliers. I couldn't find a NEMA site when I was looking
earlier.
Best regards, Andy.
PS an apology to everyone for the "snotty nosed" warning about confidentiality
attached to the end of my messages. They are added automatically by our IT
dept.
> ----------
> From: Michael Taylor[SMTP:[email protected]]
> Sent: 25 April 2001 16:20
> To: Andrew Wood
> Cc: 'emc-pstc'
> Subject: RE: Request for help RE: NEMA 7
>
> An enclosure rated NEMA-7 is intended for use in Explosive atmospheres (read
> - big, heavy & VERY expensive). You would need to know the Class, Division
> & Group to select the correctly rated enclosure.
>
> This (more or less) corresponds to the European EEx Zone, CAT. and Group
> classification. See IEC-79-1A(part-1). Also see: directive 94/9/EC and EN
> 50014. More information would be required to correctly determine enclosure
> requirements. Keep in mind that there will be other requirements placed on
> your product for installation in a explosive atmosphere.
>
> Regards,
> Michael Taylor
> Colorado
>
> -----Original Message-----
> From: Andrew Wood [ mailto:[email protected]]
> Sent: Wednesday, April 25, 2001 7:46 AM
> To: 'emc-pstc'
> Subject: Request for help RE: NEMA 7
>
>
>
> Colleagues
> I have been contacted by one of our sales engineers who has a request to
> quote for supplying a product suitable for hazardous areas meeting NEMA 7
> rating. He has already spent some time surfing the web.
>
> My NEMA to IP rating conversion chart only lists NEMA 1, 2 3, 3R, 3S, 4, 4X,
> 5, 6, 6P then jumps to 12,12k & 13.
>
> I have been unable to get any further myself on the web. It would be
> appreciated if anybody could tell me whether NEMA 7 is probably an error in
> the request, or is it a genuine but maybe little used rating that needs more
> searching to track it down.
>
> Thanks in advance for any help.
> Andy.
>
>
>
>
>
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