CE marking is not a sticker you buy, it is a set of obligations someone must carry. On an imported transformer, knowing who that "someone" is protects you from a costly surprise.
For a power transformer, CE marking means the product meets the applicable EU directives (Low Voltage, EMC, Ecodesign) and that a responsible economic operator holds a technical file and issues an EU Declaration of Conformity (DoC). The mark is the visible tip; the file and the DoC are the substance.
A compliant delivery comes with: the EU Declaration of Conformity, the type and routine test reports (to IEC / EN 60076), the nameplate data, and the technical documentation needed by your installer and design office. This is exactly what lets your customs broker clear the unit without friction.
A frequent trap: clearing customs and being compliant are two separate things. Paying duties and VAT gets the crate through the border; it says nothing about CE, Tier 2 or WEEE. Both must be satisfied; see Tier 2 explained and the full EU compliance page. For the import mechanics themselves (EORI, VAT, Incoterms), the detailed walkthrough lives on the French import guide.
General information, not legal advice; the exact allocation of responsibilities depends on your setup.
The party placing the product on the EU market under its brand carries the manufacturer's obligations: technical file, EU Declaration of Conformity, CE marking. That responsibility cannot be delegated to the factory abroad.
No. Factory test reports feed the technical file, but the EU Declaration of Conformity must be issued by the entity responsible for the product on the EU market, under its own name.
At minimum: routine test report per IEC/EN 60076, the EU Declaration of Conformity, rating plate data, and the operation & installation documentation. We supply this package as standard.