SF6 Gas-insulated LBS
RAF-12/630 pole-mounted load switch is suitable for rated voltage 12kV, rated current 630A and 50/60Hz distribution system, and used for making and breaking disconnected, load current/overload current in the power system. It can automatically separate the fault section of distribution line when faults occur. The switch has manual, motor modes, it’s easy and fast to install and the construction cost is low.
Ambient temperature: Max: ＋70℃, Min－25℃.
Relative humidity: 100%
Wind pressure: ≦ 700 pa（equivalent to wind speed: 34m/ｓ）.
Seismic intensity: 8 degree.
Installation site : No danger of fire, explosion, chemical corrosion, frequently strenuous vibration.
Pollution grade : Ⅳ class.
SF6 is an insulation gas with excellent arc extinguishing performance;
Visible On/ OFF status, there are indicators on the operation side and the bottom of the device, it can be easily observed standing on the ground;
Durable, the switch shell is made of corrosion resistant material (304 stainless steel plate) and sprayed with protective paint to ensure a long service life (more than 30 years);
The main switch use fully sealed structure, not affected by the external environment;
Low leakage rate, less than 0.1%/year;
Mechanical stability of operating mechanism is high, mechanical life was designed as 10000 times;
All indicators use reflective materials, the state of witches can be accurately observed even in dark environment.
Number of phase 相数
Rated Voltage 额定电压
Imoulse withstand voltage 冲击耐受电压
Power-frequency dry withstand voltage 工频干式耐压
Power-frequency wet withstand voltage 工频湿式耐压
Normal current 工作电流
Short time withstand current 短时耐受电流
Peak withstand current 峰值耐受电流
Duration of short time 短路持续时间
Short-circuit making current 短路接通电流（短路关合电流）
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