公开(公告)号：US4890186A

公开(公告)日：1989-12-26

申请号：US310673

申请日：1989-02-14

申请人： Chiaki Matsubara ,  Hirokuni Ishikawa ,  Masao Ojima

发明人： Chiaki Matsubara ,  Hirokuni Ishikawa ,  Masao Ojima

IPC分类号： H01H9/10 ,  H01H37/76 ,  H01H87/00

CPC分类号： H01H87/00 ,  H01H9/106

摘要： In the past, a power fuse need be replaced after the current limiting operation and cannot be repeatedly used. To solve this problem, there has been proposed a permanent fuse or the like which uses an alkaline metal having a low melting point such as Hg, K, Na, etc.These are harmful to human body, and since they are completely vaporized, an insulated layer of a vessel cannot be removed, thus giving rise to a difficulty toward higher voltage.The present invention makes best use of characteristic of carbon which sublimates. A plurality of boundary layers of carbon lumps are disposed in series or in series and parallel, and electrode potential drops at the time of large current and potential drops of arc column under high atmosphere presssure which produces for a short period of time are utilized to effect current limiting.Despite the fact that materials used comprise carbon, they are harmless to human body, and since the potential drop is utilized, a large insulated layer of the vessel can be used to facilitate the formation of higher voltage. Since the carbon lumps are not fused, repeatable use becomes possible.

摘要翻译： 在过去，电流保险丝需要在限流操作后更换，不能重复使用。 为了解决这个问题，已经提出了使用具有低熔点的碱金属如Hg，K，Na等的永久熔断器等。这些对人体有害，并且由于它们完全蒸发， 容器的绝缘层不能被去除，从而导致更高电压的困难。 本发明最好地利用升华的碳的特性。 碳块的多个边界层串联或串联并联设置，并且在大电流时的电极电位下降以及在短时间内产生的高气压压力下的电弧柱的电位下降被用来实现 电流限制。 尽管使用的材料包括碳，但它们对人体是无害的，并且由于使用了电位降，所以可以使用容器的大绝缘层来促进形成更高的电压。 由于碳块不融合，因此可以重复使用。