--
From: Kendall Wilcox
Reply To: Kendall Wilcox
Sent: Wednesday, October 21, 1998 9:26 PM
To: plaw...@west.net
Cc: emc-p...@majordomo.ieee.org
Subject: Re: Plugs for China
Patrick,
You are correct. The small bumps in the contact blades of the wall
outlet are designed to mate with the holes of the
attachment plug blades. My understanding is that holes in the blades and
bumps on the wall outlet contacts are
optional. However, if the holes and bumps are used, the dimensions must
meet the criteria specified in the standard.
In the US, UL 817 gives dimensional requirements for the bumps and holes.
Best Regards,
Kendall Wilcox
Fujitsu Computer Products of America
plaw...@west.net (Patrick Lawler) on 10/21/98 11:00:41 AM
Please respond to plaw...@west.net (Patrick Lawler)
To: emc-p...@majordomo.ieee.org
cc:(bcc: Kendall Wilcox/Orch/SJ/FCPA/Fujitsu)
Subject: Re: Plugs for China
I just looked at a hospital-grade cord, and it had solid, nickel-plated
blades
_with_ a hole.
Is the hole related to plug retention in the outlet? I thought I
remembered
seeing small bumps on the mating blades inside the wall outlet.
On Wed, 21 Oct 1998 08:15:52 -0800, ed.pr...@cubic.com wrote:
From: ed.pr...@cubic.com
Subject: Re: Plugs for China
Date: Tue, 20 Oct 1998 16:06:42 -0800
To: EMC-PSTC emc-p...@majordomo.ieee.org, Millsaps Cindy-G14342
g14...@ga25epd.mot.com
From: Millsaps Cindy-G14342 g14...@ga25epd.mot.com
Subject: Plugs for China
Date: Tue, 20 Oct 1998 16:10:33 -0400
To: 'emc-p...@ieee.org' emc-p...@ieee.org
It seems that China now requires the plug blades to have no holes in
them. Referring to the small round opening at
the upper area of a US plug.
Thanks,
Cindy Millsaps
Product Safety Engineer
Motorola Energy Systems Group
(770) 338-3288
FAX: (770) 338-3345
Sorry, Cindy, I'm of no help on your question. But, can anyone tell me
just what those little circular holes in the
High and Neutral plug blades are supposed to do?
And now, another little observation. I looked at some equipment with
Hospital Grade cable plugs. These plugs had solid
blades; no holes at all. And the blades were much more rigid, with
slightly larger thickness and width than a standard
plug (subjective, since I didn't have a caliper with me). I would think
that this would create higher contact pressure
with the female socket elements when mated.
Also, the blades had what appeared to be a nickel plate finish.
Regards,
Ed
--
Ed Price
ed.pr...@cubic.com
Electromagnetic Compatibility Lab
Cubic Defense Systems
San Diego, CA. USA
619-505-2780
Date: 10/21/1998
Time: 08:15:53
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