ZW8-12/ Outdoor HV Vacuum Breaker Main purpose
ZW8-12/□series Outdoor HV Vacuum Breaker are used for switching on/off load current, overload current and short circult current in three-phase power system with AC 50hz and rated voltafe 10~12KV matching with recloser controllers, the breaker can identify current characteristics and realize repetitious autoeclosing or permanent fault isolation.with it own PT power.
use circumstance conditon
2、altitude:≤2000M(if the place is at higher altitude,enhance tated insuiation level)it should be custom-made for >2000M
3、wind pressure: ≤ 700PA(equivalent to wind speed 34m/s)
4、earthquake intensity: ≤Ⅷ
5、pollution class: Ⅳ
6、maximum day temperature difference: ≤25℃
ZW8-12/ Outdoor HV Vacuum Breaker Type Meaning
item unit parameter rated voltage KV 12 rated insulation level power frequency withstand coltage dry 42 wet 34 lightning impulse withstand voltage(peak value) 75 rated current A 630;400;200 rated short circult breaking current KA 20;16;12.5 rated operating sequence o-0.3s-co-180s-co breaking current frequency under rated shout circlt times 30 rated short current switching current (peak value) ka 50 rated peak value withstand current KA rated short time withstand current ka 20;16;12.5 rated short circult duration time s 4
Dimension and mounting
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