EE, MODULES

EE36: TRANSFORMER COOLING CLASSES

NEMAIECEXPLANATION
OAONANOil-air cooled (self-cooled)
FAONAFForced air cooled
OA/FA/FAONAN/ONAF/ONAFOil-air cooled (self-cooled), followed by two-stage forced air cooling (fans)
OA/FA/FOAONAN/ONAF/OFAFOil-air cooled (self-cooled), followed by one stage forced air cooling (fans), followed by one stage forced oil (oil pumps)
OA/FOAONAN/ODAFOil-air cooled (self-cooled), followed by a stage of directed oil flow pumps (with fan)
OA/FOA/FOAONAN/ODAF/ODAFOil-air-cooled (self-cooled), followed by two-stage directional oil-flow pumps (with fan)
FOAOFAFForced oil/air-cooled (fan) only rating – no self-cooling rating
FOWOFWFForced oil/water cooled rating only (oil/water heat exchanger with oil and water pump) – no self-cooled rating
FOAODAFForced oil/air cooled grading with directed oil flow pumps and fans only – no self cooled grading
FOWODWFODWF

Book of Engineering - Online Engineering Reference | Product Hunt