BS EN 50645 is a European standard that discusses the ecodesign requirements for small power transformers. They are small power transformers, medium power transformers and large power transformers. These transformers transform the voltage.
BS EN 50645 is applicable to transformers with 50 Hz AC input and output with a rated power of 1 kVA or more and a voltage lower than 1 kV, except those excluded in the regulation. For transformers with a voltage between 1 kV and 1,1 kV, BS EN 50645 may be used as a guide.
BS EN 50645 on ecodesign requirements for small power transformers applies to:
Transformers is a static piece of apparatus with two or more windings which, by electromagnetic induction, transforms a system of alternating voltage and current into another system of voltage and current usually of different values and at the same frequency to transmit electrical power. Certain products comply with minimum requirements related to energy efficiency. These are called ecodesign requirements and the aim is to reduce the negative environmental impact throughout the product's lifecycle.
BS EN 50645 provides you with the requirements such as no-load loss and load loss for small power transformers. When the transformer is connected to the rated supply voltage, at the rated supply frequency, with no load on the output, the no-load loss is not higher by more than 5 % from the marked value. And the load loss is not higher by more than 5% from the marked value.
With obedience and compliance to BS EN 50645, you can efficiently provide the ecodesign requirements for small power transformers. In this manner, you can build consumer confidence.
EN 50645:2017