The HZW8-12/T630-25G outdoor vacuum circuit breaker is designed with a structure that is three-phase, pole type and fully enclosed. It has excellent sealing performance for greatly enhanced efficiency and prevents exposure to moisture and other unwanted elements. This circuit breaker is especially suitable for use in cold or wet areas. It is mainly used in breaking and connecting load currents, overload currents and short circuit currents in rural power grids, city networks, and small electric power systems.
The outdoor vacuum circuit breaker is suitable for us in substations, industrial and mining enterprises, rural power grids and distribution systems which play roles in protection and control.
|4||Rated short-circuit breaking current||kA||25|
|5||Breaking times of Rated short-circuit breaking current||Times||30|
|6||Rated peak with stand current||kA||63|
|7||Rated short-time withstand current(4S)||kA||25|
|8||Rated short-circuit current||kA||63|
|9||1 min power-frequency withstand voltage 1min||kV||42/48|
|10||lightning impulse withstand voltage||kV||75/85|
|11||Mechanical service life||Times|| 10000(Spring)
|12||Rated operation order opening-0.3s-closing and opening -180s- closing and opening|
The structure of outdoor vacuum circuit breaker is three-phase box type, of which the three-phase vacuum interrupter is placed in the metal box. This breaker uses interphase insulation and insulation against grounding of SMC insulating materials so that it is reliable. This product adopts a smart recloser circuit breaker: it is suitable in conditions available of power when the basic type works with the recloser controller; and it is suitable in conditions unavailable when the PT type works with the recloser controller.
-Altitude: within 2000 meters; gradation for surface pollution: IV
-Temperature: -40℃ - +40℃
-Wind speed: within 35m/s; Earthquake intensity: within 8 magnitudes
-Using condition requests no flammable, explosive danger, chemical corrosion