Product overview:
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.
Application:
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.
Type and significance of the product:
Technical parameters:
Item No. Commodity Unit Parameters 1 Rated Voltage kV 12 2 Rated Current A 630/1250 3 Rated Frequency Hz 50 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)Features:
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.
Application environment:
-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
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