The transformer oil or insulating oil is used in transformers as well as some electrical equipment to:
- insulate the live parts,
- maintain insulating properties of the material such as paper, winding, etc. used in the machine,
- protect the machine parts from rust and corrosion,
increase the heat dissipation of the machine by convection,
Low cost AVR
Digital readout for PT Supply and Dead band Settings
LED indications for Raise, Lower presignals,
Undervoltage and Control Relay operation conditions
Continuously adjustable Time Delay Setting
Automatic resetting after voltage correction
Single pulse operation of control relays
Undervoltage internal blocking
UV or Auxiliary Fail Relay optionally available
433V Display optionally available