Vacuum Interrupter
MV Switchgear
Vacuum Interrupter 
CG started manufacturing of Vacuum Interrupters at Aurangabad, India in 1985-86 in technical collaboration with the then Westinghouse Electric, USA, to became the pioneers in vacuum technology in India. After completion of collaboration period, CG extended the product range up to 72.5kV with continuous design upgradation with our in-house Research and Development to offer Vacuum Interrupters for various applications. In 2014-2015, we increased the manufacturing capacity to over 1,50,000 Numbers of Vacuum Interrupters per year to become the largest Vacuum Interrupter manufacturer in India.
Today, more than 15,00,000 units of CG Vacuum Interrupters are in service across the globe.
- Widest range to offer.
- Efficient arc quenching technique with high interrupting capacity.
- Compact and robust construction.
- Polyurethane & silicon encapsulation for superior external dielectric strength.
- Long life with excellent performance.
- Low Chopping current, limiting inductive switching overvoltage.
- Customized designs.
- Certified with latest QMS (ISO 9001-2008), EMS (ISO 14001-2004) & OHSAS (BS 18001-2007)
- Complies to IS, IEC and ANSI standard
- Class 100 work stations in clean room for assembly of Vacuum Interrupter components
- In-house contact manufacturing
- State-of-the-art vacuum brazing furnace for Vacuum Interrupter manufacturing
- Non-destructive measurement of vacuum in Vacuum Interrupter
Routine Tests
- Vacuum Measurement Test.
- High Voltage Seasoning.
- Impulse Test.
- High Voltage Power frequency withstand Test.
- Leak rate Test.
- Mechanical Impact test.
Type Test
- Mechanical / Electrical endurance test.
- High Current (Short Circuit) test.
Vacuum Interrupter (VI) is the heart of the circuit breaker. It is the arc extinction and hence the current interruption chamber of the circuit breaker. The design of each of component is based on the results of extensive research and development activities done by our R&D team.The high voltage design of the vacuum interrupter is evaluated using the electrostatic analysis. This analysis helps in the estimation of the electrostatic stresses.A short-circuit breaking operation is performed and the images of the resulting arc are captured through high speed photography.
