The circuitbreaker adopts porcelain pole structure,spring operation device and it can undertake tasks like opening operation and closing operation nearby or remotely.It also has the advantages such as excellent interruption performance,short arcing time, long electrical endurance,simple structure and convenience to be installed and maintained. Moreover,it can be used to open or close load current,overload current and short-circuit current.It was applicable at transformer substations,power plants,rural power distribution automation grids and occasions where frequent operations are needed.

Overall dimensions

Technical parameters

NO. Item  Unit  value
1 Rated voltage kV 40.5
2 Rated current A 2500
3 Rated frequency Hz 50
4 1 min power frequency withstand voltage (wet)
(dry) phase to phase, to ground/ fracture
kV 80/95/118
5 Lightning impulse withstand voltage(peak) phase to phase, to ground/ fracture kV 185/215
6 Rated short-circuit breaking current kA 31.5
7 Rated short-circuit breaking times Times 30
8 Rated peak withstand current kA 80
9 Rated short-time withstand current/ duration kA/S 31.5/4
10 Rated short-circuit making current kA 80
11 Resistance of main circuit μΩ ≤80
12 Mechanical life Times 10000

Related case

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