We are one step ahead from our competitors indulged in importing and exporting wide range of Gas Circuit Breakers (GCB) from Surat, Gujarat, India. Circuit breakers are vital equipment for protecting transmission systems. They cut off current instantly in the event of a system failure due to lightning or other issues.
Hitachi is developing Gas Circuit Breakers (GCB) that work with high currents, with voltages from 22 kV to 550 kV, and accurately support increases in breaking capacity.
For a UHV (ultra high voltage) transmission project in the United States, Hitachi delivered more than 40 800 kV GCBs (double break) through its subsidiary Hitachi HVB.
550 kV Gas Circuit Breaker
With high voltage and high current distribution systems, a Gas Circuit Breaker (GCB) that uses SF6 gas, with three times the insulating ability of air, is applied.
This technology releases a circuit of electrodes within compressed gas, extinguishes the generated arc by blowing a stream of supersonic air, and interrupts the current.
Hitachi is developing GCBs with high-level simulation technologies in R&D, including analytical elements such as high temperature, high voltage, supersonic flow, and discharge of power.