Issue:
Difference between a K4 and a K13 rated Transformer.

Product Line:
LV Transformers

Environment:
Applies to Low Voltage Transformers by SquareD/Schneider Electric

Cause:
Variations of K Ratings for Transformers

Resolution:
The K4 Transformer is used in applications in which a major portion of the load is non-linear devices, and the 24 hour average load duty cycle is 80% or higher. The K13 rated Transformer is used where the majority of the load is non-linear, and the 24 hour average load duty cycle is 95% or higher. In practical applications, ratings higher than K13 are never necessary.

Released for:Schneider Electric USA