go to the Transformers product page Anonymous asked on Sep 25th, 2017 in Transformers

What is the origin of transformer losses?

Giuseppe Petrelli, Global Marketing and Sales Manager

ABB's answer

The windings in a transformer consist of typically a few 100 to a few 1000 meters of conductor. The current flowing through those conductors sees their resistance and produces ohmic losses. The windings also produce a magnetic stray field inside the transformer tank. All conducting parts exposed to this field will produce some eddy current losses. Even with out a load current the transformer core, which is needed to maintain the voltage, produces some magnetic hysteresis and eddy losses.

More information on transformer losses and energy efficiency in transformers here.


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  • Giuseppe Petrelli

    Giuseppe Petrelli

    Global Marketing and Sales Manager


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