Auto Phase Sequence Corrector (APSC)

For Your: Air Conditioners and Elevators (Lifts)

This unit has been designed to prevent elevators, water pumps, air-conditioners and other equipment that are prone to damage due to abrupt power interruptions or improper sequence of the incoming three phase power

Lavis Engineering has designed the above product with an aim to eliminate all of the above complexities and to ensure smooth functioning of three phase operated machines without any manual interventions. When APSC is connected to the mains, it checks for the input supply for any voltage deviations, phase loss and allows power to be disbursed only when the parameters are conducive. Apart from the above features, it also checks for input sequencing, sequence and corrects it to normal sequence , if found reversed.


  • Phase Sequence Detection
  • Phase Sequence Correction
  • Neutral Disconnection Protection
  • Auto Manual Switch
  • High Voltage Protection
  • Protection from over load (Optional)
  • Surge Protection


  • Air Conditioners
  • Elevators (Lifts)
  • VRV Systems
  • 3 Phase Water Motors