im stuck on a homework question can anyone tell me what is t130 about tis appears on a name plate

 

T130 may be the size of the toroid the transformer was wound upon. However, there is no dash number to indicate the material the toroid is made of.

http://www.micrometals.com/rfparts/rftoroid5.html

 

T130 may be the size of the toroid the transformer was wound upon. However, there is no dash number to indicate the material the toroid is made of.

http://www.micrometals.com/rfparts/rftoroid5.html

thank you for your reply i do know its to do with tempreture but am not sure
weather its to do with the losses
kind regards

mark

 

Is there any more information available about the transformer?

 

on the name plate is acme power transformers,model no ds-34-12t 240v 50z 28VA
Then on the bottom is T130 it is a step down transformer to 12v
many thanks
mark