You *could be* right. I've been in this situation
several times. Let me explain.
My golden rule is - the burden of power supply
approvals should be on the mfr. I don't negotiate
on this point ever.
Two things could happen if you don't follow this rule:
1. You can certainly go for just
Thanks for all response.
What I have learned from this session is, always use a UL recognized power
supply (PS) if you want to get your end product UL listed.
Do not interfere with non-recognized PS, that might cause you trouble later,
especially during the UL audits and it will also require
I read in !emc-pstc that am...@westin.org wrote (in 20010907130815.1903
0.qm...@www2.nameplanet.com) about 'UL approval IT equipment', on Fri,
7 Sep 2001:
We want our IT product to be UL approved. We purchase a modified power supply
(PS) which is not UL appoved. The original PS is UL approved
: am...@westin.org [mailto:am...@westin.org]
Sent: Friday, September 07, 2001 8:08 AM
To: emc-p...@majordomo.ieee.org
Subject: UL approval IT equipment
What about this one:
We want our IT product to be UL approved. We purchase a modified power
supply
(PS) which is not UL appoved. The original PS
Hi Amund:
We want our IT product to be UL approved. We purchase a modified power
supply
(PS) which is not UL appoved. The original PS is UL approved. The only
difference in the PS is the value of one resistor which means that we now
can
take 2.3A/28VDC out instead of
I have also been down this road.
We insist he supply manufacturer add the new version to their `recognized'
file. If it doesn't affect the critical components transformer etc. it should
be a minor update to their file.
This way you have a recognized component that is traceable.
If it isn't
, NY
-Original Message-
From: am...@westin.org [mailto:am...@westin.org]
Sent: Friday, September 07, 2001 9:08 AM
To: emc-p...@majordomo.ieee.org
Subject: UL approval IT equipment
What about this one:
We want our IT product to be UL approved. We purchase a modified power
supply
(PS
What about this one:
We want our IT product to be UL approved. We purchase a modified power supply
(PS) which is not UL appoved. The original PS is UL approved. The only
difference in the PS is the value of one resistor which means that we now can
take 2.3A/28VDC out instead of 1.9/28VDC. It
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