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CE Certification & Directives

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Ditch:
Hi There,

1st of all, I wasn't sure whether to post this in this forum or the beginner's forum so please forgive me if this is a beginner's question!!!

I need to create technical files for products that I have been developing. I've left today free to read up and try to understand this but I'm already confused.

Is there anybody UK-based who does this for a living and whom I could pay to complete these on my behalf?


At the moment, I have 3 products. 2 have microchip processors and the other does not so I thought i would start trying to create a technical file for this basic unit but I can't even work out which directive this falls under.

This basic unit is nothing more than a fancy contactor. Simply supply it with 24vdc and then close a terminal and 3 x SSR switch to energise outputs. This then sends the 24v supply through output terminals to power 3rd party equipment (fire door retainers).

This is only 24v and it outputs 24v so I don't think this falls under the low voltage directive as this is for 75v and upwards.
It doesn't have a processor so I don't think it falls under the electromagnetic compatibility (EMC) Directive.

So I guess my question is a) Which directive does this fall under and b) Is there any UK based people who do this for a living and whom I could pay?

Any help, guidance, or helpful links would be very much appreciated.

Ian

mikeselectricstuff:

--- Quote from: Ditch on April 04, 2021, 10:23:45 am ---Hi There,

1st of all, I wasn't sure whether to post this in this forum or the beginner's forum so please forgive me if this is a beginner's question!!!

I need to create technical files for products that I have been developing. I've left today free to read up and try to understand this but I'm already confused.

Is there anybody UK-based who does this for a living and whom I could pay to complete these on my behalf?

--- End quote ---
Many EMC test houses can advise on this sort pf thing

--- Quote --- (fire door retainers).

--- End quote ---
There may be fire alarm system standards that you might need to comply with, possibly outside the scope of CE but covered by UK regs

--- Quote ---This is only 24v and it outputs 24v so I don't think this falls under the low voltage directive as this is for 75v and upwards.

--- End quote ---
correct

--- Quote ---It doesn't have a processor so I don't think it falls under the electromagnetic compatibility (EMC) Directive.

--- End quote ---
Whether it has a processor or not is irrelevant, it's about whether it emits, or is susceptible to RF interference , ESD or transients.
A simple device like you describe probably doesn't have any emissions to speak of, but plausibly could have immunity or ESD issues

Benta:
You can be 100% certain that your equipment falls under the EMC Directive. If not, the RE Directive comes into play.
No way around it. Exempt are only super-simple things like a resistor or a capacitor or an incendescent bulb (although I'm not sure about that one).

This might help:
https://wireless.dekra-product-safety.com/download/RED_EMC_Certification_Guide.pdf

Don't know any test houses in the UK, sorry.

AndyC_772:
I believe some of the emissions tests may only apply to products that have a minimum clock speed; this may be where the idea that a product becomes exempt if it doesn't contain a processor comes from. Not 'wrong' as such, but a misinterpretation or oversimplification of the truth.

Find yourself an EMC lab and ask them what they can do to help out; they're the industry experts.

mikeselectricstuff:

--- Quote from: AndyC_772 on April 04, 2021, 10:42:21 am ---I believe some of the emissions tests may only apply to products that have a minimum clock speed; this may be where the idea that a product becomes exempt if it doesn't contain a processor comes from. Not 'wrong' as such, but a misinterpretation or oversimplification of the truth.


--- End quote ---

As regards emissions, it's not so much about certain things being exempt, but being able to show that they will "obviously" meet the requirements without the need for testing due to their nature - this could be things like low frequencies or very low power etc.

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