
双电源自动转换开关是对两路电源进行切换,分常用电源和备用电源,当常用电源断电后备用电源供电,常用电源来电后恢复到常用供电(这就是自投自复,常用电源优先供电的原则) 如特殊情况不需要自动切换,也可以自行设置到手动切换(一般型具有手动/自动两用,任意调节)。再者,其内部安装有一种由微处理器控制,用于电网系统中网电与网电或网电与发电机电源启动切换的装置,可使电源连续源供电,当常用电突然故障或停电时,通过双电源切换开关,自动投入到备用电源上,使设备仍能正常运行。




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双电源
双电源自动切换开关是指:一种由微处理器控制,用于电网系统中网电与网电或网电与发电机电源启动切换的装置,可使电源连续源供电。系列双电源,当常用电突然故障或停电时,通过双电源切换开关,自动投入到备用电源上,(小负荷下备用电源也可由发电机供电,)使设备仍能正常运行。常见的是电梯、消防、监控上、照明等。
开关
开关是指一个可以使电路开路、使电流中断或使其流到其他电路的电子元件。开关的原理是接点的“闭合”(closed)表示电子接点导通,允许电流流过;“开路”(open)表示电子接点不导通形成开路,不允许电流流过。 按照用途分为波动开关、波段开关、录放开关、电源开关、预选开关、限位开关等。按照结构分为微动开关、船型开关、钮子开关、拨动开关等。