Features:

Castings treated against porosity through a special process.
Unique internal design of 'housing' prevents false air traps on top of the relay.
Well designed internal layout gives clear view of colour of gas inside the relay through glass window for fault analysis.
Bucket type float design with inherent ability to withstand vacuumtreatment of transformers.
Built in test facility for checking continuity of both Alarmand Trip circuits.
Anti-vibration custom built mercury switches give high stability against mechanical shocks and vibrations.
ATVUS relays are approved by most of the consultants, Power Projects and Electricity Boards in India.