Hello Mr. Unwin,
The lack of responses on this forum may be due to the breadth of your
question. The approvals required for equipment in the United States can
vary significantly based on the type of equipment. Safety requirements are
going to depend on the type of product and the end use. Most products will
require approval from a Nationally Recognized Test Laboratory (NRTL), some
will require approval from a government agency and a few may require
approval from a industry specific agency. A list of the U.S. approved
NRTLs is at the link below. Please note that each NRTL is approved only
for a certain scope of products and not every NRTL may be able to test your
equipment.
http://www.osha.gov/dts/otpca/nrtl/index.html#nrtls
EMC approval follows a similar paradigm. The exception is that most, but
not all, products require verification rather than certification. In
general, the U.S. rules require testing for emissions and not
susceptibility. However, as with safety, there may be additional
requirements or approvals required based on the product type and industry.
I highly recommend working with one of the NRTLs if you are unfamiliar with
the North American requirements. The electrical codes in North America are
significantly different than European electrical codes and this can create
some significant differences in test and design requirements. Many of the
NRTLs have both safety and EMC capability and would be happy to provide
information on the United States requirements for your products.
I took a quick look at the Servomex web site. Many of the products shown
fall under Test and Measurement equipment. If this is true for your
product in question, you are lucky. The North American requirements have
been harmonized with IEC 61010. However, as noted above, there will be a
few national deviations based on the North American electrical codes.
Best regards,
Ted Eckert
American Power Conversion Corporation
The items contained in this e-mail reflect the personal opinions of the
writer and are only provided for the assistance of the reader. The writer
is not speaking in an official capacity for APC nor representing APC's
official position on any matter.
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11/06/2006 10:47 Subject
AM US - non hazardous area approvals
Dear Colleagues,
What approvals are required for electrical and electronic equipment,
typically powered from either AC mains up to 230 V or DC up to 25 V, for
use in non-hazardous areas in the US?
Many thanks in anticipation of your replies.
Best regards
Ian Unwin
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