DESCRIPTION

Gas Circuit Breaker (GCB) is a switch, which by its excellent extinction performance and insulation feature of the SF6 gas, can input the normal current generated in the power system or block abnormal current.

Our puffer-type SF6 GCB, with superior arc-quenching and insulation characteristics, is a dead tank type where the breaker is directly and mechanically earthed. With reduced failure rate and high reliability for frequent circuit operations, it boasts the best supply record domestically.

 

FEATURES

  • 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

 

Kian Tajhiz’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.

 

 

DESIGN

    • SF6 gas insulated

    • Dead tank type

    • Single puffer insulation for the phase

    • Porcelain or composite bushing

    • ASME pressure container certificate

    • External bushing current converter

    • Passed the ANSI and IEC design test while maintaining higher performance

 

SPECIFICATION

 
GIS Type 145 145 245 362 800
Rated current (A) 1,200 /2,000 /3,000 1,200 /2,000 /3,000 1,200 /2,000 /3,000 2,000 /4,000 4,000
Breaking current (kA) 40 63 63 63 63