Hi Amund,

Under your scenario, the AC/DC adapter is just an external power supply of your 
main unit.  Your product is operating on safe level of DC.  If you don’t sell 
the adapter together with the main unit, you may avoid declaring it in your DoC.

If you have to sell your product together with EPS, you have to include it 
(main unit and do not need to specially mention the ESP) in the DoC.  You are 
unable to avoid the accountability on the components of your product even 
though you are not manufacturing them.  You got the right to find a trusted 
component and purchase under a commercial contract that is a legally binding 
agreement.  Did you remember Samsung Galaxy Note 7 recall due to rechargeable 
battery?  Samsung purchased the battery from a supplier and ultimately bore the 
recall consequence.

Because the conformance of your product is only valid with that specific 
adapter, you have to state it in the rating plate and IB.  If not, you may have 
the risks that the user may use the adapter for other purpose and your main 
unit may be breach with LVD, EMC, etc. in case the user uses other adapter with 
your main unit.

Regards,

Scott

Sent from Mail for Windows 10

From: Amund Westin
Sent: Wednesday, 5 September 2018 12:09 PM
To: [email protected]
Subject: [PSES] DoC - 3rd party device to be included?

We buy AC/DC adapters form a major power supply manufacturer. It has all the 
papers in place as DoC, CB test reports and CB certificate. 

This adapter has been used under the EMC, LVD and RED tests of our product. 
There have been some questions if the adapter should be included in the DoC, 
because conformance of our product is only valid with that specific adapter. 
Even though the adapter has its own DoC, I think it is correct to include the 
adapter in our DoC since both parts are put together on the marked as a 
combined solution (in the same package).
Do we take any unnecessary adapter manufacturer responsibilities by including 
the adapter type designation on our DoC? Any thoughs?
Looked into the Blue Guide, but could not find any discussions about this.


BR
Amund






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http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used 
formats), large files, etc.

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