Circuit Breaker SF6 Circuit Breaker 35 kV. - 500 kV.
Live Tank SF6 Circuit Breakers are capable of interrupting all possible switching duties. The breakers are single break interrupter design and have dual flow puffer action for current interruption to ensure strong reliability and safety of the operations of the grid. The SF6 Circuit Breaker is capable of clearing the severe rate of rise of recovery voltage due to short line faults and high recovery voltage peak due to out of phase switching. Small currents such as capacitor bank switching current, transformer magnetizing current, cable / line charging current are interrupted smoothly without any restrike or reignitation. The circuit breaker is consisting from vertical porcelain unit containing puffer type interrupter, spring-spring operating mechanism and control equipment and base frame / support columns
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SF6 Circuit Breaker
| Description | Unit | CB 72.5 | CB 123 | CB 145 | CB 245 | CB 420 | ||
|---|---|---|---|---|---|---|---|---|
| Standard | IEC 56, BSS 5311 | |||||||
| Rated Voltage | kV | 72.5 | 123 | 145 | 245 | 420 | ||
| Power Frequency Withstand Voltage | kV | 160 | 230 | 275 | 460 | 520 | ||
| Lightning Impulse Withstand Voltage | kV | 325 | 550 | 650 | 1050 | 1425 | ||
| Creepage Distance | mm | 1820 | 3075 | 3625 | 6125 | 10500 | ||
| Type of Mechanism | Ir(A) | Spring Pneumatic | ||||||
| Rated Current | A | 3150 | ||||||
| Rated Frequency | Hz | 50/60 | ||||||
| Rated Operating Sequence | Hz | O-0.3 sec-CO-3 min-CO | Rated Short Circuit Making Current | kA | 31.5 | 31.5 | 31.5 | 100 | 150 |
| Weight | kg | 1650 | 2000 | 2000 | 3900 | 9600 | ||
Contact us today and we will propose the suitable product for your requirements.
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