国产久一视频在线观看蜜臀_日韩av无码中文_一本之道无码av在线不卡_亚洲欧美色中文字幕在线_日本免费网站在线_激情久久亚洲综合_美女午夜福利欧美_小泽玛利亚在线观看国产_丰满人妻大屁股一区二区香蕉_av中文字幕乱码免费看

- Type LW3-12/630-20 column-mounted circuit breakers are suitable for use with a rated voltage of 12kV.

- Rated current 630A, 50/60Hz distribution network off.

- Turning off the load current and overload current in the power system can automatically separate the fault distribution circuit segments.

- Switches with the latest technology of electronic controller, manual operation, electric operation and remote operation.

- The electronic controller is housed in a stainless steel case and can be used in all weather conditions.

- In addition, the box can also be installed with wired and wireless modems, which can achieve remote monitoring and control.

- Simple column installation and arrangement is convenient and fast, reducing the construction cost.

Performance advantages:

1.     SF6 gas is non - toxic, non - flammable electrical insulation gas, with excellent arc - extinguishing characteristics.

2.     A variety of options are available in addition to standard ceramic bushing, including rubber insulators on epoxy equipment bushing.

3.     The color-coded primary contact position indicator is easy to see from the ground(Green-open;Red-close).The indicator is directly connected to the main contact drive shaft assembly,to ensure accurate display of contact status.

4.     Spring energy storage mechanism ensures fast closing and opening operation(less than 110ms).

5.     Standby electronic controller, not only local operation, but also FTU/RTU interface to achieve the main console operation.

6.     Switches are made of proven rugged, corrosion resistant materials(304L stainless steel plate for warships).To ensure the life is long(30 years),and to achieve a series of operation.It has the desired characteristics of column mounted equipment.

7.     Every switches have been filled with SF6 gas and finished sealing treatment before shipping.And been tested according to IEC60265-1(1988),GB3804-1990 standard.

1.    Ambient air temperature: upper limit +50℃, lower limit -40℃.

2.    Relative humidity: 110%

3.    Altitude: Not over 3000m.

4.    Wind pressure: not over 700pa(equivalently wind speed 34m/s).

5.    Seismic intensity: 8 degrees.

6.    Installation site: no fire,no explosion.

No chemical corrosion and frequent violent vibration.

7.    Class of pollution:Ⅲ,Ⅳ.