three-phase ZW20 12kv Outdoor Vacuum Circuit Breakers for Break and Close Load Current

Summary

ZW20?series?circuit?breaker?is?a?new?product?which?is?inventively?produced?by?

?it?has?the?features?of?three-phase?non-segregated?longitudinal?magnetic?field?vacuum?quenching?of?arc, ?

SF6?as?the?insulation?and?the?insulation?of?silicone?rubber/solid?epoxy?resin.

ZW20?series?circuit?breaker?use?three-phase?non-segregated?structure?and?has?the?features?of?stable?

and?reliable?breaking?performance, ?no?combustion?and?explosion?danger, ?maintenance-free,

?light?weight?(two-thirds?of?similar?products?), ?high?cycle?life?(mechanical?operating?life?is?10000?times)?and?so?on.?

New?designed?spring?operating?mechanism?is?exposed?in?SF6?to?effectively?avoid?traditional?spring?operation?

mechanism’s?

design?defects, ?such?as?stagnation?and?rustiness, ?making?a?significant?improvement?in?reliability.

Scope?of?Application

ZW20?series?circuit?breaker?is?mainly?used?to?break?and?close?load?current, ?overload?current?and?short-circuit?current?in?the?electric?power?system.?It?is?used?to?protect?and?control?the?power?distribution?system?in?transformer?

substation, ?industrial?and?mining?enterprises, ?and?it?is?especially?suitable?for?the?transformation?of?the?power?

network?in?rural?and?city.?This?circuit?breaker?can?be?used?with?FTU/dividing?switch?controller, ?so?as?to?automatically?detect,

?isolate?and?alarm?the?faults?in?main?line’s?section?and?branch, ?and?monitor?line?operation.?