电(Dian)力(Li)逆(Ni)变(Bian)电(Dian)源(Yuan)是(Shi)一(Yi)种(Zhong)后(Hou)备(Bei)式(Shi)不(Bu)间(Jian)断(Duan)电(Dian)源(Yuan)。(?)它(Ta)主(Zhu)要(Yao)完(Wan)成(Cheng)由(You)直(Zhi)流(Liu)到(Dao)交(Jiao)流(Liu)的(De)逆(Ni)变(Bian)。(?)通(Tong)常(Chang)可(Ke)根(Gen)据(Ju)应(Ying)用(Yong)场(Chang)合(He)设(She)定(Ding)为(Wei)直(Zhi)流(Liu)主(Zhu)用(Yong)或(Huo)交(Jiao)流(Liu)主(Zhu)用(Yong),(?)由(You)静(Jing)态(Tai)开(Kai)关(Guan)控(Kong)制(Zhi)切(Qie)换(Huan)。(?)电(Dian)力(Li)逆(Ni)变(Bian)器(Qi)是(Shi)把(Ba)12V或(Huo)24V直(Zhi)流(Liu)电(Dian)能(Neng)((?)电(Dian)池(Chi),(?)蓄(Xu)电(Dian)瓶(Ping))(?)转(Zhuan)变(Bian)成(Cheng)交(Jiao)流(Liu)电(Dian)((?)一(Yi)般(Ban)为(Wei)220v50HZ正(Zheng)弦(Xian)或(Huo)方(Fang)波(Bo)),通(Tong)常(Chang)用(Yong)于(Yu)变(Bian)电(Dian)所(Suo),(?)箱(Xiang)变(Bian),(?)为(Wei)高(Gao)压(Ya)柜(Gui)柜(Gui)体(Ti)提(Ti)供(Gong)应(Ying)急(Ji)电(Dian)源(Yuan)。(?)