Scott, et al,
Sorry for the use of an unfamiliar acronym.
NC means 'National Committee'. Any country which is a member of the
ISO/IEC/CISPR will have National Committees who are shadow committees of the
International committees. These committees are responsible for providing
the Country's national, voting response to any issues that arise in the
development of the specific requirements contained in the applicable
standards for that product group & effects (mechanical safety etc = ISO,
electrical safety = IEC, EMC requirements = CISPR).
The membership of National Commttees are determined by each country.
Generally the NC for any particular set of requirements will be a mixture
ofmanufacturers, trade groups, test labs, universities & government agencies
each of whom have an interest in ensuring that the requirements that end up
in the international standards are adequate but not burdensome.
Participation in NCs may or may not be 'free', depending upon how
each country decides to fund the activity. In the US trade associations or
test houses commonly provide the leadership to organize activities for
particular industries. Industrialized countries have a well developed
approach to all of this. Developing countries have a growing interest and
increased participation in the activities. Underdeveloped countries may
have an interest and some national work or may still be trying to decide how
they will interface with all of this.
How does all of this work in your country? Check it out.
:>) br, Pete
Peter E Perkins, PE
Principal Product Safety Engineer
PO Box 23427
Tigard, ORe 97281-3427
503/452-1201 fone/fax
[email protected]
_ _ _ _ _
Hi Pete,
Thanks for your reply. What is NC? Is it open to public? Where I can get
greater detail.
Regards,
Scott
On 8 Oct, 2014, at 12:30 am, Pete Perkins <[email protected]> wrote:
> Scott & PSNetters,
>
> You seem to understand the role of CTL in implementing the product
> evaluation according to the requirements in the IEC standard. There
> has been some contention in the past where the CTL decisions were
> changing the requirements in some unintended way. CTL has made it
> pretty clear to their participants that any issues that go beyond
> direct implementation must go back to the IEC TC to get resolved.
> I can't speak of implementation issues in test houses as I'm not
part
> of that food chain.
> Manufacturers can follow the implementation issues by being part of
> their NC and, by their representatives, the IEC TC responsible for the
> standard that applies to their products. They can influence the
> implementation thru these committees - clarifying requirements or
> whatever else needs to be done to get the proper outcome of the
> evaluation. Working thru the NCs keeps it properly balanced between
> manufacturers and test houses.
>
> :>) br, Pete
>
> Peter E Perkins, PE
> Principal Product Safety Engineer
> PO Box 23427
> Tigard, ORe 97281-3427
>
> 503/452-1201 fone/fax
> [email protected]
>
> _ _ _ _ _
>
> I find the CTL decision sheets are helpful to interpret the IEC standards.
> As a new user, I am not sure how it enforces the DSHs in testing
> laboratories. Does any expert here shed some light on it? What are
> the key differences in terms of enforcement between PDSH and DSH? As
> the notification of DSHs and PDSHs are sent to MB, NCB and CBTL every
> Friday, the core testing houses must be aware of these decisions and
> enforce accordingly. How can those decisions be delivered to the
> manufacturers for implementation?
>
> Regards,
>
> Scott
>
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