The most common grounded plug type in China is the flat plug similar to the
Australian plug. For Class II plugs (non-grounded), there is a plug
configuration very similar to the U.S. and Japanese two bladed plug. The
Chinese standards are GB 1002 and GB 2099.1 and it covers both configurations.
I do not know if copies of the standards are readily available in English.
Plugs, sockets and direct plug-in transformers must have CCC approval governed
by the rules of CQC. However, other test agencies (such as UL and TÜV) are
authorized to test to CQC rules, and these agencies may be able to help you
with information regarding the exact details of the plug configuration.
http://www.ul-asia.com/cma/main/UL-CMA-main.html
http://www.int-app.tuv.com/country_details.asp?country=China
- Ted Eckert
"Bolintineanu, Constantin" <cbolintine...@tycoint.com> wrote:
Dear Colleagues,
I tried to find out on several channels information regarding the TYPE
of
ACCEPTABLE PLUGS to be used within DIRECT PLUG-IN TRANSFORMERS placed on the
CHINESE MARKET. I was not able to find at least an answer.
I searched on Internet and the results that I found are not relevant;
I have the following questions:
The RATINGS of that DIRECT PLUG-IN transformer are:
PRIMARY 220-230V ac, SECONDARY 16Vac /20VA
The QUESTIONS are:
1. Which is the MOST COMMON PLUG CONFIGURATION IN CHINA ? (ROUND pins,
OR
FLAT, or "Aus-asia" configuration )?
DETAILS regarding this aspect (geometry, size, insulation, etc. will be
very
much appreciated, INCLUDING the NAME of the APPLICABLE REGULATORY DOCUMENT
(Standard) that covers the DIRECT PLUG-IN TRANSFORMERS in China).
2. IF there an English version of that Standard, please be so kind and
advise
me from where we are able to buy it.
3. Are there in China any Standards for the INPUT PLUGS ? (e.g.: in
Australia
they have a specific Standard that covers Approval and test
specification-Plugs and socket-outlets, AS/NZS 3112:2004)
4. Any available specification it will be very much appreciated if you
can
share with me, pictures, links, etc.
5. IS IT MANDATORY for a such DIRECT PLUG-IN TRANSFORMER to have the CCC
APPROVAL or not ?
In my engineering judgement the answer is YES, but I received some
feedback
that due to the OUTPUT (?!?) voltage (less than 35 Volts) it is not necessary
to be CCC Approved...??!?
Your feedback and advises are very much appreciated.
Respectfully yours,
Constantin
Constantin Bolintineanu P.Eng.
TYCO SAFETY PRODUCTS CANADA
3301 LANGSTAFF Road, L4K 4L2
CONCORD, ONTARIO, CANADA
e-mail: cbolintine...@tycoint.com
Tel: 905 760 3000 ext 2568
Fax: 905 760 3020
DISCLAIMER: This e-mail message may contain privileged or confidential
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________________________________
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Aldous,
Scott
Sent: Friday, May 02, 2008 10:44 AM
To: Curt McNamara; ted.eck...@apcc.com
Cc: emc-p...@ieee.org
Subject: RE: Safety regulations [text][heur][BCC][ffrom][spf]
Curt writes:
To phrase this another way: someone else's label (the power supply
manufacturer) is not a valid indicator that a product has a safety approval.
If I understand the original question correctly, this is what it really
comes
down to. The power supply may be Listed by itself, but that does not mean that
the end product using it is then somehow covered by the power supply Listing,
even if no additional hazards are present in the end product outside the power
supply. If there is a requirement for the end product to be Listed, then it
must be evaluated separately. Allowing the power supply Listing mark to be
visible in the end product in such a way that the customer is led to believe
that this mark covers the end product is a no-no.
Scott Aldous
Compliance Engineer
Advanced Energy
Tel: 970-407-6872
Fax: 970-407-5872
________________________________
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Curt
McNamara
Sent: Friday, May 02, 2008 8:38 AM
To: ted.eck...@apcc.com
Cc: emc-p...@ieee.org
Subject: Re: Safety regulations
Wow! The chart shows 2A at 45V for Class II, or 100VA as you note. This
is a
lot of energy to me, and can certainly result in ignition given the correct
conditions. I note that the standard also shows voltages above SELV as
permissible.
The implication in the original question was information technology (as
far
as I could tell). Even with approved supplies and only SELV levels safety
investigations are still required.
Some examples:
Flammable material (the laptop plastic case).
Fault (5V to ground) causes part to fall off board through vent hole,
igniting material on table.
There are lots of ways to design unsafe products using only SELV (not
even
considering Class II). If your product needs a safety approval then an
investigation is required.
To phrase this another way: someone else's label (the power supply
manufacturer) is not a valid indicator that a product has a safety approval.
Curt
in real life
Curt McNamara, P.E. // principal electrical engineer
Logic Product Development
411 Washington Ave. N. Suite 400
Minneapolis, MN 55401
T // 612.436.5178
F // 612.672.9489
_www.logicpd.com <http://www.logicpd.com/> _
</exchweb/bin/redir.asp?URL=http://www.logicpd.com/>
On May 2, 2008, at 7:24 AM, ted.eck...@apcc.com wrote:
The output of a Class 2/LPS circuit does not have the voltage or energy
to
be a shock or ignition risk as long as that voltage is used without any
changes. I could design a circuit with an inverter and step-up
transformer
that would give me a hazardous voltage. The Class 2 limit is 100 W. In
theory, I could get 1000 VAC RMS at 100 mA. Even with losses due
efficiency limits, there would be enough current to kill somebody.
I will say that in general, if you are using a power supply that meets
the
60950 LPS or the NEC Class 2 limits (they are basically the same) then
you
can hang circuits off the output without problems. However, it still
needs
to be investigated in a case by case basis.
Ted Eckert
APC-MGE
http://www.apc.com/
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-MGE or Schneider
Electric.
The speaker does not represent APC-MGE's or Schneider Electric's
official
position on any matter.
scott barrows
<sbarrows9@yahoo.
com>
To
Sent by: Curt McNamara <mcnam...@umn.edu>,
emc-p...@ieee.org peter merguerian
<pmerguerian2...@yahoo.com>
cc
05/02/2008 07:10 Benoit Nadeau
<bnad...@matrox.com>,
AM EMC-PSTC <emc-p...@ieee.org>
Subject
Re: Safety regulations
If the power supply is an NEC class 2 (vs a class II insulation system)
or
an LPS construction, then there is not enough current available to be a
fire hazard.
Scott
Curt McNamara <mcnam...@umn.edu> wrote:
What if a short occurred on one of these PCBs? Is there enough flammable
material to constitute a fire hazard? Could a component get hot enough
to
melt connections and drop off, igniting material underneath the product?
As you can see, there may be other cases to consider. Given that an
event
could initiate legal action, it may be wise to have a third party verify
safety.
Curt
On May 1, 2008, at 10:37 PM, peter merguerian wrote:
If the power supply is Listed/Certified Class 2 (power limited
outputs) and there are no hazardous energy levels, I see no
problems.
Peter Merguerian
Benoit Nadeau <bnad...@matrox.com> wrote:
Bonjour,
I’m much more fluent in EMC than safety and this is why I
respectfully seek advice in this matter.
I have a question coming from the designers and I’ve been looking
in
the US regulations (the NEC mainly) to find the answer but I
didn’t.
I think this is more like an interpretation than anything else.
So the question is:
If a PCB manufacturer buys a card cage that includes a fully
listed
power supply (approved by UL or CSA or ETL or any NRTL), and stuff
this cage with his own PCBs (not listed) with no harmful external
voltages or access to, and resell this as a whole new product. Can
he put that on the market without having to re-list the new
product
as long as the markings on the power supply are still visible from
outside the box?
For me this would be like having an external Power Supply that
feeds
very low voltage to a box (like a laptop computer),
Thank you for the time you are going to take to answer this.
Regards,
==========================================
Benoit Nadeau, ing. M.ing.
Gérant du Groupe Conformité (Conformity Group Manager)
Matrox
1055 boul. St-Régis
Dorval (Québec)
Canada H9P 2T4
Tél: (514) 822-6000 (2475)
FAX: (514) 822-6275
bnad...@matrox.com
www.matrox.com
==========================================
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