Hi Tania,
Thank you for the detailed response. I was posing these question in devil's
advocate fashion and thought responses such as yours would be very useful to
members of the group.
Best regards,
Ron Pickard
ron_pick...@hypercom.com
______________________________ Reply Separator _________________________________
Subject: RE: Re[2]: US NRTL required ?
Author: "Grant Tania (Tania)" <tgr...@lucent.com> at INTERNET
List-Post: emc-pstc@listserv.ieee.org
Date: 9/17/98 6:23 PM
Ron,
I've lifted your questions from below and provided my response within <<
>>.
Tania Grant, Lucent Technologies, Octel Messaging Division
tgr...@lucent.com
I would also ask, what if it connects to a telecommunications network?
....
I have responded by saying that the NEC (based on 800-4) requires
products to be Listed that connect to a telecommunications network.
Does this argument from these people
have any merit? <<NO.>>
Do battery powered products that connect to a telecommunications network
need to be, in fact, Listed? <<YES. 800-4 requires Listing for telco
equipment, and 480-3 requires that equipment supplied by storage
batteries meet the requirements of the NEC.>>
Also, as described in the NEC, does the term "telecommunications
network" refer
to only public networks? <<90-2 covers Scope of the NEC. 90-2(a)
describes what is
covered; 90-2(b) describes what is not covered. 90-2(b)(4) states the
following: "Installations of communications equipment under the
exclusive control of communication utilities located outdoors or in
building spaces used exclusively for such installations."
It has been my experience that telcos may reserve the above exclusion
for themselves when they manufacture their own equipment, but demand
Listing when buying it from someone else to be installed in their
locations. Also, Bellcore standard (forget which one, and I am too
tired to go chase it right now) states that equipment must meet UL1459.
(Hopefully, the next edition will add "...and/or UL1950, 3rd edition or
later.") In any event,
telcos have been buying our equipment meeting UL1459 or UL1950, 3rd
edition.>>
----------
From: ron_pick...@hypercom.com[SMTP:ron_pick...@hypercom.com]
Sent: Thursday, September 17, 1998 5:16 PM
To: emc-p...@ieee.org
Cc: tgr...@lucent.com; richard.pa...@exgate.tek.com
Subject: Re[2]: US NRTL required ?
Hi Richard,
You raised this point (some additional thoughts of mine
follow):
>Let me take this opportunity to present another point for
anyone who
>cares to give it some thought.
>
>The NEC and/or local electrical requirements come into play
because the
>product connects to the local electrical supply.
>
>What about battery operated products ? Is there then nothing
that says
>that a battery operated product needs any third-party safety
approvals ?
I would also ask, what if it connects to a telecommunications
network?
In my travels, I've come across some people that have said that
"All you need
is an external Listed power supply and there's no need
(safety-wise) to do
anything else, even if the product does connect to the PSTN." I
have responded
by saying that the NEC (based on 800-4) requires products to be
Listed that
connect to a telecommunications network. Does this argument
from these people
have any merit? Do battery powered products that connect to a
telecommunications network need to be, in fact, Listed?
Also, as described in the NEC, does the term
"telecommunications network" refer
to only public networks?
Comments?
Best regards,
Ron Pickard
ron_pick...@hypercom.com
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