the zw6-12 outdoor HV Vacuum Circuit Breaker (short for breaker)is a kind of outdoor hv switching devices used in three-phase AC 50hz,12kv.it is used for breaking and making load current and short-circult current in power system.especiallu in the case of frequently operation. matching with ct23 spring operating machanism,the breaker can realize electric or manual energy storage and electric switch on/off. based on customer’s requirements,100/5,200/5,400/5,600/5 current transformer can be installed into the breaker, the JSZR-10W dry voltage transformer is build-in,and with fuse protection more,it realizes own rig net opereting power and provides operating power for reclosers or telemechancs terminals. with right control systems it can be a recloser or sectionalizer,it is an ideal choice for city and country electric network non-oil rebuild.
Nomal working environment
2、altitude:≤2000M，it should be custom-made for >2000M
3、wind pressure: ≤ 700PA(equivalent to wind speed 34m/s)
4、earthquake intensity: ≤Ⅷ
ITEM UNIT PARAMETER rated voltage KV 12 rated current A 630/1250 power frequency withstand voltage KV 42/48 lightning impulse withstand voltage(peak value) KV 75/85 rated short circult breaking current KA 12.5 16 20 / 20 25 31.5 rated short current switching current (peak value) KA 31.5 40 50 / 50 63 80 rated short time withstand current KA 12.5 16 20 / 20 25 31.5 rated peak value withstand current KA 31.5 40 50 / 50 63 80 breaking current frequency under rated shout circlt TIMES 30 mechanism life TIMES 10000
Dimension and mounting
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