the zw6-12 outdoor hv vacuum 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.
item unit parameter rated voltage KV 12 rated insulation level 1minpower frequency withstand voltage 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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