Issue:
For liquid filled MV Transformers, What is the standard heat rise?
Product Line:
Transformers
Environment:
Classes 7200, 7300, and 7400 MV transformers
Resolution:
The average temperature rise of the windings, measured by the resistance method, shall be [55°C] [65°C] when the Transformer is operated at rated kVA output in a 40°C ambient. The
Transformer shall be capable of being operated at rated load in a 30°C average, 40°C maximum ambient, as defined by ANSI C57.12.00 without loss of service life expectancy.
NOTE: The ambient temperature shall not exceed 40 degrees C, and the average ambient temperature for any 24 hour period shall not exceed 30 degrees C.
For liquid filled MV Transformers, What is the standard heat rise?
Product Line:
Transformers
Environment:
Classes 7200, 7300, and 7400 MV transformers
Resolution:
The average temperature rise of the windings, measured by the resistance method, shall be [55°C] [65°C] when the Transformer is operated at rated kVA output in a 40°C ambient. The
Transformer shall be capable of being operated at rated load in a 30°C average, 40°C maximum ambient, as defined by ANSI C57.12.00 without loss of service life expectancy.
NOTE: The ambient temperature shall not exceed 40 degrees C, and the average ambient temperature for any 24 hour period shall not exceed 30 degrees C.
Released for:Schneider Electric USA
