EN IEC 61558
Safety of transformers, power supplies and combinations. The baseline reference for isolation and safety transformers.
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Every part leaves tested
The conformity of a toroidal component is not evident from its appearance, but from its electrical response in operation. To prevent failures and downstream machine downtime, instrument verification is not an on-demand service: every part is powered up and measured before packing, both on the single prototype and on the entire production lot.
Normative references
We build to customer specification. When the specification calls up a standard, the part is designed and tested accordingly and the test report says so.
Low Voltage Directive
Directive 2014 35 EU. A transformer is a component: CE marking stays with the maker of the finished appliance, we supply the data they need.
RoHS and REACH
Regulation 2011 65 EU and Regulation 1907 2006. Wire, insulation, resins and tapes are bought with a supplier declaration of conformity.
Thermal classes
Class B at 130 degrees, class F at 155 degrees, class H at 180 degrees. The class is chosen during design together with the permitted temperature rise.
Materials
- Tape wound toroidal cores in grain oriented electrical steel
- Ferrite, sendust and nanocrystalline cores for inductors
- Enamelled copper wire from 0.08 mm to 3.00 mm, thermal class per design
- Flat copper wire up to 5x2 mm
- Polyester and nomex insulating tapes, mylar and purpose-made adhesive tapes
- Silicone flying leads, tinned faston tabs, terminal blocks
You need a signed test report
Tell us which standard your specification calls up and what has to appear in the report. We prepare it together with the first batch.