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Gas Circuit Breaker

Hyosung’s puffer-type SF6 Gas Circuit Breaker boasts a superior operational rate, highly reliable braking, and has become recognized as the most trusted supplier in the world.

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Simple operation principle and structure
Puffer-type single pressure breaking principle simplifies the structure since no anti-liquefaction device is necessary.
No performance degradation resulting from interpolar contamination or damage
By using the dead tank type, the bushing only needs to be considered for ground insulation which greatly reduces the possibility for degradation due to interpolar unbalance, which results from damage to an insulator.
Excellent breaking performance
Hyosung’s GCBs have been verified by national test agencies and as they ensure excellent breaking performance, even under harsh recovery voltage conditions such as failure of local lines or accidents, including abnormal grounding or step-out.
Easy maintenance
Breaking position is of adequate height, enabling easy checking of the interior
High reliability of frequency switching performance
The dead tank type, where the breaking and driving units are mechanically connected, offers high performance for frequent switching with fewer failure factors.
Low operating noise
When breaking, the gas is on hold and not emitted into the air. Therefore, when GCB operates, it generates low noise levels allowing it to be suitable for installation in downtown or outdoor residential areas.
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