What Does OFAF Mean?

OFAF = Oil Forced Air Forced

• O = Oil

• F = Forced (oil circulation)

• A = Air

• F = Forced (air cooling)

Definition

Forced oil circulation + Forced air cooling

Working principle

1. Oil is circulated by oil pump (not natural flow).

2. Cooling air is blown by cooling fans forcibly.

3. Highest cooling efficiency among ONAN/ONAF/ OFAF.

Application

Large & high-power power transformers, substation main transformers, power plant transformers.