Rational Electronic and Systems offers Manual or Motorised Version Oil Test Set. Rational Electronic and Systems is the supplier of inverter, voltage stabilizer, control and power transformers and control rectifier. Manual or Motorised Version Oil Test Set has a fuse for incoming supply and has an electronic circuit to trip the instrument when the leakage current through the oil under test exceeds the preset limit. Manual or Motorised Version Oil Test Set has a magnetic stirrer which is provided with the instruments. The motor has a zero start interlock and a oil chamber door interlock. It has an Audio-visual alarm which can be provided on demand to get "unit on alert" facility.