Abstract: The circuit breaker in vacuum is utilizing the vacuum as insulation between the contact finger together with circuit breaker that puts out the arc medium 。The circuit breaker in vacuum possess a lot of strong point ,Conduct is :Life is elder 、Being applicable to is frequently manipulated 、It is little against the stroke that the contact finger is turned on the distance ,Merely in the interest of the oil circuit-breaker 1/10 who turns on the distance masters ,This not merely decreases putting out the bulk of arc room ,But also decrease the combined floodgate organization combined floodgate meritorious service enormously ,Moreover branch combined floodgate velocity is greatly ,It is all little to manipulate buzz and inflexible vibration meritorious service 。Ignites the arc time brief ,Ordinarily not overtake 20ms 。May no oil contrasts 、Fireproof explosion proof ,Bulk is little 、Weight is light ,7.2kV's grade weight is little oil circuit-breaker in part around ,The maintenance intermission time elder ,It is convenient to defend.
The original was chiefly emphasized the vacuum and was put out the design of arc room ;The contact finger adopts Cur’s stuff to let loose the puffing style to put out the arc contact finger 。The correlation stirs 、Warmhearted stability ,The temperature rise checking computations all accord with the national standard 。Behavior’s intention forms to adopt electromagnetism behavior intention to form .Designing the various sides be able to meet the fixed mission ,Design requirement attain .
Keyword :Vacuum extinguishing of arc chamber ; Contact Insulation ;Electromagnetism behavior forms at the intention Design