公开(公告)号：US4345127A

公开(公告)日：1982-08-17

申请号：US110795

申请日：1980-01-09

申请人： Lutz Niemeyer

发明人： Lutz Niemeyer

IPC分类号： H01H39/00 ,  H01H33/70

CPC分类号： H01H39/006

摘要： A high-voltage, blast-actuated power switch is disclosed which includes a sealed switch casing having a pair of electrical switch contacts, at least one of which can be collapsed by the pressure generated by a blasting cap. The switch casing is filled with a high dielectric strength medium having a low compressibility. When a short circuit or overload condition occurs, the blasting cap is ignited thereby generating a pressure wave. The pressure wave is transmitted through the medium and is practically instantaneously applied to the region of contact between the electric switch contacts. The electric switch contacts are deformed by the pressure wave and separate from each other. The switch contacts preferably include predetermined bending or breaking points to facilitate bending or breaking. The switch includes a screen which delays the gaseous materials emitted from the blasting cap from reaching the region between the separated electrical switch contacts. The screen is located between the blasting cap and the region of contact between the electrical switch contacts.

摘要翻译： 公开了一种高电压，鼓风式电源开关，其包括具有一对电开关触点的密封开关壳体，其中至少一个可由爆破盖产生的压力而折叠。 开关壳体填充有具有低压缩性的高介电强度介质。 当发生短路或过载情况时，爆炸帽被点燃，从而产生压力波。 压力波通过介质传播，并且几乎瞬时施加到电开关触点之间的接触区域。 电开关触点由压力波变形并相互分离。 开关触点优选地包括预定的弯曲或断裂点以便于弯曲或断裂。 该开关包括一个屏幕，该屏幕延迟从喷砂帽排出的气体材料到达分离的电气开关触点之间的区域。 屏幕位于爆破帽和电气开关触点之间的接触区域之间。

公开(公告)号：US3987388A

公开(公告)日：1976-10-19

申请号：US594008

申请日：1975-07-08

申请人： Lutz Niemeyer

发明人： Lutz Niemeyer

IPC分类号： H01H37/76 ,  H01H87/00

CPC分类号： H01H87/00

摘要： A current limiting device includes a duct containing a current-limiting material therein which serves to interconnect two spaced terminals but which is evaporable when subjected to an over-current flowing through the material between the terminals. The wall forming this duct includes a region made from a highly-temperature-resistant material which has a relatively small cross-section that connects with another region of the duct having a larger cross-section, and the wall part forming the region of smaller cross-section is surrounded by a resistor member connected electrically in parallel with the current-limiting material disposed therein and which has a resistance value such that the current-limiting material is relieved of current following onset of an over-current condition.

摘要翻译： 限流装置包括在其中含有限流材料的管道，其用于互连两个间隔开的端子，但是当受到流过端子之间的材料的过电流时，其可蒸发。 形成该管道的壁包括由耐高温材料制成的区域，其具有与具有较大横截面的管道的另一区域连接的相对较小的横截面，并且壁部分形成较小十字形的区域 所述电阻元件由与其中设置的限流材料并联电连接的电阻元件围绕，并且具有电阻值，使得限流材料在过电流状态开始之后被释放。