Avel's standard toroidal transformers are designed for a temperature rise of a
maximum of 60ºC, and have a material rating of Class A (105ºC), although the winding wire used has a rating of Class F (155ºC) for additional reliability. This temperature rise is above the ambient temperature of approximately 30-35ºC.If a higher temperature rise can be tolerated by surrounding components and enclosures, then a reduction in transformer size may be considered.
Avel can manufacture to most standard temperature classes, although the cost of the transformer will rise considerably due to the higher-cost materials that would be required. It is important to furnish expected ambient temperatures in a custom inquiry for any temperature class, as the running temperature of the transformer will be the ambient temperature plus the transformer temperature rise.
Below are some standard temperature classes.
- Y = 90º C
- A = 105º C
- E = 120º C
- B = 130º C
- F = 155º C
- H = 180º C