| 什么是真空断路器？ |
| 添加时间：2018/8/29 17:07:06 浏览次数： |
| 真空断路器是3～10kV，50Hz三相交流系统中的户内配电装置，可供工矿企业、发电厂、变电站中作为电器设备的保护和控制之用，特别适用于要求无油化、少检修及频繁操作的使用场所，断路器可配置在中置柜、双层柜、固定柜中作为控制和保护高压电气设备用。 Vacuum circuit breaker is an indoor distribution device in 3-10kV, 50Hz three-phase AC system. It can be used for protection and control of electrical equipment in industrial and mining enterprises, power plants and substations. It is especially suitable for use places requiring no oil, less overhaul and frequent operation. It is used to control and protect high-voltage electrical equipment. 1）工作原理是： 当动、静触头在操作机构的作用下分闸时，触头间产生电弧，触头表面在高温下挥发出蒸汽，由于触头设计为特殊形状，在电流通过时产生一磁场，电弧在此磁场作 用下沿触头表面切线方向快速运动，在金属圆筒(屏蔽罩)上凝结了部分金属蒸汽，电弧在自然过零时就熄灭了，触头间的介质强度又迅速恢复起来。 1) The working principle is: when the dynamic and static contacts are switched off under the action of the operating mechanism, the contacts produce arcs, and the contacts surface evaporates steam at high temperature. Because the contacts are designed to be of special shape, a magnetic field is generated when the electric current passes. Under the action of this magnetic field, the arc moves rapidly along the tangent direction of the contacts surface and moves in metal. Some metal vapor is condensed on the cylinder (shield cover), and the arc is extinguished when it passes zero naturally, and the medium strength between contacts is rapidly restored. 2）真空断路器作用 2) function of vacuum circuit breaker 断路器具有过载、短路和欠电压保护功能，有保护线路和电源的能力。 Circuit breakers have overload, short circuit and undervoltage protection functions, and have the ability to protect lines and power supplies. |
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