MV transfo loss in the loss diagram

[Jingyi]

Hello,

I recently found that the MV transfo loss in the loss diagram is somehow larger than the value I defined in the ohmic losses section, for example in the datasheets data, I defined the global loss at PNom to be 1.01%, but the MV loss in the loss diagram shows 1.4%. 

 

Since the Operating power of MV transfo is sometimes lower than PNom, MV transfo loss should be lower than 1.01%? Do you have any idea about this? Thank you!

[André Mermoud]

The transfo loss reported by the simulation (loss diagram) is the sum of the Copper losses and the Iron losses. 

Remember that the Iron losses are a fixed value, permanent (24/24) if you did not check "Night disconnect". It represents an important contribuition.