Transformer cooling method ONAN/ONAF, DNAN/OFAF, ONAN/ONAF/OFAF
ONAN/ONAF=ONAN(Oil Natural Air Natural)
ONAF (Oil Natural Air forced
Indicates that the transformer is equipped with a fan, and when the load is large, the fan is put into operation. in two cold
In the cooling mode, the oil flow is circulated by heat convection.
DNAN/OFAF
Indicates transformer cooling equipment with oil pump and fan. but also stipulates that in nature
Capacity limitation in cooling mode
ONAN/ONAF/OFAF
Indicates the cooling equipment of the transformer with oil pump and fan,
There are three cooling modes: do not start the oil pump for blowing cooling, start the oil pump and blow for cooling
capacity limit.
Post time: Jun-05-2022
