The CE identification mark is accepted throughout the complete European Neighborhood. It is a sign that the product to which it's utilized to conforms with the minimal necessities of all of the relevant European Directives for that product, and that duly approved evaluation procedures (technical information) have been carried out on that product.
The most typical power provide Directive is the Low Voltage Directive (LVD), EC quantity 73/23/EEC, which got here into pressure in 1973. This is applicable to all electrical tools with an AC enter voltage of between 50 and 1000 V for alternating present and between 75 and 1500 V for direct present.
Many DC-DC board mount converters are therefore exempt from this directive if they've a nominal enter voltage of 5VDC, 12VDC or 24VDC offered the enter vary shouldn't be 75VDC or increased.
Most 48V enter DC-DC converters have a DC enter vary of 36V to 75VDC and so fall below the Directive. 4 : 1 enter vary fashions (18 - 75VDC) would even be lined.
A hyperlink to the LVD will be discovered right here http://ec.europa.eu/enterprise/electr_equipment/lv/index.htm
Replace: The CE mark now covers RoHS2, so the marking will apply to decrease enter voltage converters