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Hi Scott,
I believe most of the large cordset suppliers can supply. See attached for
USA suppliers.
Also see attached for details about how pins are insulated and still conduct
etc.
Best regards,
Kevin Richardson
Stanimore Pty Limited
Compliance Solut
Hi Scott:
> Can you describe how to insulate the live pins and still
> have them conduct electricity?
Check out the British plug, BS 1363.
And the Euro 2-wire plug, CEE 7/16.
Both have insulating sleeves between the end of the prong
and the plug body. This prevents access to the live part
Kevin,
Can you tell us more? Are there any vendors that make such plugs
(example?). Can you describe how to insulate the live pins and still
have them conduct electricity?
Got me curious.
Best Regards,
Scott Douglas
sdoug...@ptcnh.net
Kevin Richardson wrote:
>I thought this information may be
Here is the (I^2)t for a 10 mil wide, 1 oz copper trace: 1.7 (A^2)s. See
if your 1 amp fuse has a lower (I^2)t rating. The trace was calculated
for a temperature rise of 110'C. So it won't open but will run up to the
glass transition temperature of FR-4. The effect of the change in
resistance with
Dan,
A safe way to go is to size the trace so that it does not exceed 170'C
at the highest PCB operating temperature. Then, if the RMS current sets
just short of opening the fuse, the trace and the FR-4 will survive. A
link to an online PCB trace calculator:
http://www.geocities.com/CapeCanaveral
Dan,
What type of dynamic overload conditions are you intending the fuse to protect
the trace aside from
just the short? And, will the fuse react quickly enough to protect the trace
against a transient
surge event? Or, is the trace not expected to be subject to transient surges?
Best regards,
Ro
Hi Dan:
> Does anyone know of a reference that shows the characteristics of PCB
> traces in overload conditions? I have a design that uses a fuse to
> protect 1 oz copper traces on a PCB and I am looking for a reference
> that will essentially give me the fusing characteristics of differ
In article <28e93c6a59d1c04aaa5e6df106dce628d40...@pysmsx401.amr.corp.in
tel.com>, Roman, Dan writes
>Does anyone know of a reference that shows the characteristics of PCB
>traces in overload conditions? I have a design that uses a fuse to
>protect 1 oz copper traces on a PCB and I am looking for
Hi Paolo:
> The equipment has a steady-state input current that oscillates between 6
amps
> and 16 amps, with a period of about 1s.
> The standard (par. 7) states that a true-rms current detector (i.e a
thermal
> effect detector) should be used, I don't have it and I don't know what it
>
hello,
Does anyone in the group have any expertise or knowledge on what tests would
be required of
a telecommunications switch that has GR 63 and GR 1089 approvals, and has now
gone
thru the full WEEE ( Lead Free ) transformation.
thnak you,
Richard,
From: owner-emc-p...@listserv.ieee.org
[mail
Does anyone know of a reference that shows the characteristics of PCB
traces in overload conditions? I have a design that uses a fuse to
protect 1 oz copper traces on a PCB and I am looking for a reference
that will essentially give me the fusing characteristics of different
trace sizes so that I
Paolo,
You appear to have a device that cycles between a full load current of 16 A
and an unloaded current of 6 A. You don't blend these two measurements
together with an RMS current meter. Instead, you can look at this as having
a no-load rms current draw of 6 A, and a full-load rms current dr
In article ,
Brian O'Connell writes
>"EQUIPMENT and SYSTEMS with a RATED input current up to and including 16
>A per phase and that are intended to be connected to the PUBLIC MAINS
>NETWORK shall comply with the requirements of IEC 61000-3-3. If an
>EQUIPMENT or SYSTEM has both long-time and momen
In article , drcuthb...@micron.com writes
>I agree with John's reasoning. How does this medical device do on the
>flicker test?
I thought it more charitable not to ask. EN 61000-3-3 is the applicable
standard. (;-)
It might be helpful to declare the current as 16.5 A and then apply EN
61000-3-11
Good People
It is important to specify the peak input current and the duty cycle in the
installation instructions, and on the rating label. The agency report(s) and
the CBTR should explicitly defined these ratings and also clearly indicate
the that "least favorable" input conditions were empirical
I agree with John's reasoning. How does this medical device do on the
flicker test?
Dave Cuthbert
Micron Technology
From: owner-emc-p...@listserv.ieee.org
[mailto:owner-emc-p...@listserv.ieee.org] On Behalf Of John Woodgate
Sent: Thursday, January 20, 2005 11:27 AM
To: emc-p...@iee
In article <20050120144901.m43...@elen.it>, P. Peruzzi
writes
>I have to declare the rated input current of a medical device, according
>to IEC 60601-1. The equipment has a steady-state input current that
>oscillates between 6 amps and 16 amps, with a period of about 1s. The
>standard (par. 7) sta
Well, I could perform an rms measurement with an oscilloscope, but my doubt
concern the time window. As the device can work in different conditions, the
oscillation period can be much more longer than a second (although the longer
the period, the lower the peak current).
The standard doesn't say an
Hi group,
This list of Harmonised standard was once established when the RTTE came into
force and listed all the standards that could be used at that time.
All standards from this very first version are still in the list although some
are already superseded by others now.
ETS 300683 is thus not th
The intent of the requirement is to allow the installer to correctly size the
branch circuit
supplying the equipment.
A True RMS reading over 1 second maybe be good enough for determining the
thermal effects on
the branch circuit wiring. But this could also lead to unsatisfactory
performance for yo
Hi Ron,
According to the Letter that we received from the OFFICE OF THE CHIEF
ELECTRICAL INSPECTOR, (Australian - Electrical Regulatory Authority), the
NEW REQUIREMENT is imposed by the DATE OF ENFORCEMENT of the LATEST
PUBLICATION of the AS/NZS3112:2000 Edition; that DATE is April 03, 2005.
The
Paolo,
ETS 300 683 still appears in the web OJ
:-http://europa.eu.int/comm/enterprise/
ewapproach/standardization/harmstds/reflist/radiotte.html
(2nd from bottom). I think it must be a mistake??
Regards,
Dave C.
From: owner-emc-p...@listserv.ieee.org
mailto:owner-emc-p...@listserv.ieee.org] O
Paolo,
Are you able to view the current waveform with an oscilloscope? If you
are able to, you can perform an RMS calculation or use the RMS feature
if the oscilloscope has one. I can send you the procedure.
Does IEC 60601-1 have an integration time for the RMS measurement? If
not, it seems that
I dont'understand your question.
The list of HS reports that EN 301 489 replace ETS 300 683 and the expiry date
is 31.10.2003.
ETS 300 683 is not listed in teh last version of R&TTE HS (4/2004)
_
Paolo Gemma
Siemens Mobile Communications S.p.A.
S
Dear group,
I have to declare the rated input current of a medical device, according to
IEC 60601-1.
The equipment has a steady-state input current that oscillates between 6 amps
and 16 amps, with a period of about 1s.
The standard (par. 7) states that a true-rms current detector (i.e a thermal
eff
According to the harmonized standards under the R&TTE Directive, ETS 300
683:1997 was superseded by EN 301 489-03 V1.3.1 on 31 October 2003.
However, it appears, that ETS 300 683:1997 is still a valid standard under
the R&TTE Directive. Does anyone know why?
Thanks,
Bob Heller
3M EMC Laboratory, 7
I just received advice from the Victorian approvals office, stating that they
will allow equipment that has already been supplied to retailers prior to 3
April 2005 to be sold up until 3 April 2006. This is a little different from
the other states.
Regards
Barry Esmore
AUS-TICK
281 Lawrence Rd
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