How hot can the 9070T and 9070TF transformers get, even without a load?

Issue:
Can the 9070T and 9070TF transformers get too hot to touch?

Product Line:
control transformer

Environment:
9070T

Resolution:
All transformers will generate heat. Depending on the size, and the environment, it could be too hot to the touch. In some cases, cooling fans in the equipment may be required. If the heat losses are required,  the information can be obtained from p.25 of 9070CT9901 catalog for many of the standard products.

If the full load losses of the transformer are known, then the heat contribution at full load can be obtained by multiplying the loss in watts by 3.414 to yield BTU/hr. If the information is critical, it should be requested each time from Product Marketing as transformer designs are subject to change without notice.

Released for:Schneider Electric USA