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.
Insulation
Classes:
- Y = 90º C
- A = 105º C
- E = 120º C
- B = 130º C
- F = 155º C
- H = 180º C
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