Re: En60065 7th edition

2001-06-15 Thread John Woodgate

AE0F4BD08FEAD211895900805FE67B1FA5C433@CAT, Colgan, Chris Chris.Colg
a...@tagmclarenaudio.com inimitably wrote:
There is discussion within our company about removing power switches from
our newer products.  The current standard allows us to do this as they can
be switched on and off via a rear panel comms bus connection (ie data link).

My specific questions are:

a)  will the 7th draft allow us to do this?

Yes. If it stays like the latest draft.

b)  will the 7th draft remove the anomaly that requires a product to have a
mechanical switch unless it has a data link or timer function?  I have
always thought this to be crazy, either all products should have switches or
none at all.

Yes. If it stays like the latest draft.

For example,
Amplifier with power relay operated by front panel tact switch via
microprocessor - not allowed
Amplifier with power relay operated by data link (used or not) via
microprocessor - allowed

IEC TC92 has now introduced a formal system for registering 'IEC
interpretations' of IEC60065, which are sent to all National Committees,
IECEE/CTL and, through CENELEC TC92/X, to the corresponding CENELEC
test-house committee OSM. These interpretations are supposed to be
published by the national committees, and BSI will probably issue them
as 'PDs', and not free of charge. 

In this case, a somewhat relevant interpretation has already been
produced:

QUOTE
Subclause 14.6.2: Application of switches

Question:
Can we consider the below-described function as capable of being
switched-off automatically and without human intervention at the time of
switching?

Description:
The product's power consumption is more than 15W and no manually
operated mechanical switch is applied.
The player consists of a CDR loader, CD changer and a hard-disc drive.
On this hard disc drive music can be stored in the MP-3 format. 
Function: After down-loading a CD disc on the hard disc, the user may
switch the player into the off/stand-by mode but the player will (or has
to) complete first several MP-3 conversion activities on the hard-disc
which take several minutes (might be up to 1/2 h). When the MP-3
conversion on the hard disc has been completed the player will
automatically switch-off to the low power consumption/stand-by mode.

Because of this we cannot have a manually operated mechanical switch
which is switching off the power, so we would like to make use of the
exceptions as given in clause 14.6.2 of the IEC60065, 6th edition.

Interpretation of the WG:
No switch is required in this case.

Rationale:
In this case the switching-off is controlled by a data link. Data links
can exist between apparatus as well as within one apparatus.  

Actions: 
No action towards the text in the IEC 60065 is needed. [Before an
amendment could be issued, the next edition will be published.]
UNQUOTE

c)  does the 7th edition define what off is?  Eg apparatus does not
function, apparatus consumes less than 15W, mains power is disconnected etc.

Note explicitly, but 5.4.2 prohibits the use of the 'OFF' symbol
60417-2-IEC-5008 (and 5010) unless an all-pole mains switch is fitted.
-- 
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Why not call a vertically-
applied manulo-pedally-operated quasi-planar chernozem-penetrating and 
excavating implement a SPADE?

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Re: En60065 7th edition

2001-06-14 Thread John Woodgate

AE0F4BD08FEAD211895900805FE67B1FA5C433@CAT, Colgan, Chris Chris.Colga
n...@tagmclarenaudio.com inimitably wrote:

Out of interest, how are BSI or IEC committees formed?  Are members invited
to join or do you apply?

I'll answer this bit now, because it's too late an hour to answer the
difficult bit!

BSI committees are formed from representatives of trade associations,
government departments, public bodies, consumer interests and some
academics. If your company is a member of a trade association (BFA?),
you could be appointed to represent that body on BSI EPL/92. Now that
BREMA is merging with FEI, it would be a good thing to have a
representative of hi-fi manufacturers on the committee. If you want to
progress that, send me an e-mail and I'll explain the procedure.

IEC Working Groups are formed from 'experts' appointed by national
standards bodies. They do not represent anyone but themselves. IEC
Technical and Sub-committees are formed from delegates, not 'members',
appointed by the national standards committees.
-- 
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Why not call a vertically-
applied manulo-pedally-operated quasi-planar chernozem-penetrating and 
excavating implement a SPADE?

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RE: En60065 7th edition

2001-06-13 Thread Colgan, Chris

John

Thanks for the reply.

There is discussion within our company about removing power switches from
our newer products.  The current standard allows us to do this as they can
be switched on and off via a rear panel comms bus connection (ie data link).

My specific questions are:

a)  will the 7th draft allow us to do this?

b)  will the 7th draft remove the anomaly that requires a product to have a
mechanical switch unless it has a data link or timer function?  I have
always thought this to be crazy, either all products should have switches or
none at all.
For example,
Amplifier with power relay operated by front panel tact switch via
microprocessor - not allowed
Amplifier with power relay operated by data link (used or not) via
microprocessor - allowed

c)  does the 7th edition define what off is?  Eg apparatus does not
function, apparatus consumes less than 15W, mains power is disconnected etc.

Out of interest, how are BSI or IEC committees formed?  Are members invited
to join or do you apply?

Regards

Chris Colgan
Compliance Engineer
TAG McLaren Audio Ltd
The Summit, Latham Road
Huntingdon, Cambs, PE29 6ZU
*Tel: +44 (0)1480 415 627
*Fax: +44 (0)1480 52159
* Mailto:chris.col...@tagmclarenaudio.com
* http://www.tagmclarenaudio.com


 -Original Message-
 From: John Woodgate [SMTP:j...@jmwa.demon.co.uk]
 Sent: 12 June 2001 21:54
 To:   emc-p...@majordomo.ieee.org
 Subject:  Re: En60065 7th edition
 
 
 AE0F4BD08FEAD211895900805FE67B1FA5C431@CAT, Colgan, Chris Chris.Colg
 a...@tagmclarenaudio.com inimitably wrote:
 Anyone know where I can get a copy of the draft 7th edition of IEC60065?
 I
 am particularly interested in the amendment to clause 14.6, use of
 manually
 operated mechanical switches.
 
 Only by joining BSI committee EPL/92. The current draft attracted a huge
 number of comments, so the text can't be regarded as final. 
 
 The clause covers 2 and a quarter pages. If you have a specific
 question, I can probably answer it, provided you realise that the final
 text may differ.
 -- 
 Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
 Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Why not call a
 vertically-
 applied manulo-pedally-operated quasi-planar chernozem-penetrating and 
 excavating implement a SPADE?
 
 ---
 This message is from the IEEE EMC Society Product Safety
 Technical Committee emc-pstc discussion list.
 
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  Dave Healddavehe...@mediaone.net
 
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  Richard Nute:   ri...@ieee.org
  Jim Bacher: j.bac...@ieee.org
 
 All emc-pstc postings are archived and searchable on the web at:
 http://www.rcic.com/  click on Virtual Conference Hall,


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   Please visit us at www.tagmclarenaudio.com
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TAG McLaren Audio Ltd
The Summit, 11 Latham Road
Huntingdon, Cambs, PE29 6ZU
Telephone : 01480 415600 (+44 1480 415600)
Facsimile : 01480 52159 (+44 1480 52159)

**  
   Please visit us at www.tagmclarenaudio.com
**

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Re: En60065 7th edition

2001-06-13 Thread John Woodgate

AE0F4BD08FEAD211895900805FE67B1FA5C431@CAT, Colgan, Chris Chris.Colg
a...@tagmclarenaudio.com inimitably wrote:
Anyone know where I can get a copy of the draft 7th edition of IEC60065?  I
am particularly interested in the amendment to clause 14.6, use of manually
operated mechanical switches.

Only by joining BSI committee EPL/92. The current draft attracted a huge
number of comments, so the text can't be regarded as final. 

The clause covers 2 and a quarter pages. If you have a specific
question, I can probably answer it, provided you realise that the final
text may differ.
-- 
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Why not call a vertically-
applied manulo-pedally-operated quasi-planar chernozem-penetrating and 
excavating implement a SPADE?

---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.

Visit our web site at:  http://www.ewh.ieee.org/soc/emcs/pstc/

To cancel your subscription, send mail to:
 majord...@ieee.org
with the single line:
 unsubscribe emc-pstc

For help, send mail to the list administrators:
 Michael Garretson:pstc_ad...@garretson.org
 Dave Healddavehe...@mediaone.net

For policy questions, send mail to:
 Richard Nute:   ri...@ieee.org
 Jim Bacher: j.bac...@ieee.org

All emc-pstc postings are archived and searchable on the web at:
http://www.rcic.com/  click on Virtual Conference Hall,