On 19 ene, 16:39, Andy Wade <spambuc...@[EMAIL PROTECTED]
> wrote:
> Wimpie wrote:
> > What to do when equipment is not covered by the LVD because the supply
> > voltage is below 50V (and therefore outside the scope of the LVD)? The
> > equipment is not indirectly covered by the LVD via the R&TTE directive
> > and is also outside the scope of the "machinery directive". The
> > product is an installation component that will be fed from an already
> > present SELV. For certain reasons, we want to "CE mark" the product.
>
> If the LVD doesn't apply you cannot use it for CE marking, i.e. it
> should not be mentioned on your DoC. However as your equipment is
> electrical the EMC directive will almost certainly apply, even if it's
> obvious that no testing is required. EMC will require a DoC and
> application of the CE mark. See the various books by Tim Williams for
> good practical advice on EMC compliance.
>
> > Is such equipment covered by the General Product Safety Directive
> > (GPSD)?
>
> As I understand it the GPSD only applies to equipment supplied to
> consumers, not to products used in the course of business. In any case
> it doesn't require CE marking.
>
> > Is it legally allowed to use the LVD (though my supply voltage is
> > outside the scope) and use EN60950 to "show" compliance with regards
> > to product safety, or is there a complete other solution?
>
> EN 60950-1 applies for any supply voltage up to 600 V, so you can use it
> for your ELV product - it's just that you can't use it for LVD/CE
> marking. There are still dangers of course at ELV, especially if high
> currents are involved, possibly leading to a risk of fire if there's a
> short-circuit fault. Having evidence to show that the product complied
> with a relevant safety standard would be a great help if you ever had to
> defend a claim against such an eventuality.
>
> > Wim
> > PA3DJS
>
> 73 de G4AJW :-)
> --
> Andy
Hello Andy,
Thanks for the clear answer regarding applicability of LVD.
The doubts (regarding GPSD) I had were because some of these
installation components will be used in an office/residential
environment and will be used by consumers. The products will be sold
via strict distribution channels (generally not accessible for end-
users).
All products (24V bus devices also) will be "CE'd" (though it is an
installation component and formerly not necessary). This is also to
avoid questions from installers. For safety the products have been
designed with EN60950-1 in mind (with level 3 transient over voltage).
All currents, power and stored energy are within EN60950. Short
circuit currents are hardware limited with a Software shut down (in
the SELV installation supply).
The funny thing is that some products contain an SRD radio (R&TTE
directive) and they must fulfill LVD, regardless of voltage rating.
For EMC we will use EN55022 and EN55024. We designed for EN61326,
industrial locations (for immunity). We don't know whether we meet
this, because the test house had problems generating the required
levels.
When I do my job good, it easier for the owner of the installation to
be compliant with the new EMC directive (that includes fixed
installation now).
I have the 2001 edition of "EMC for Product Designers". I really love
it.
Best regards,
Wim
PA3DJS
www.tetech.nl (Dutch)
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