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发明名称
新型三相电机断相及短路保护器
摘要
一种新型的电动机断相及短路保护器,适用于星形接法的三相电动机专用,它抛弃了传统保护器的“过电流”保护法,利用断相时电动机中性点与零线之间电压会升高这一现象,在电机电流刚达到额定电流的2—3倍(远小于起动电流),就能切断电源,保护电动机。比起现有保护器,具有灵敏度高,无误动作,平时不耗电、成本低、安装简便、无须调试、通用性好等优点。
申请公布号
CN2058793U
申请公布日期
1990.06.27
申请号
CN89206079.4
申请日期
1989.04.15
申请人
杨振华
发明人
杨振华
分类号
H02H7/09;H02H7/085
主分类号
H02H7/09
代理机构
代理人
主权项
1、一种新型电动机保护器,专门用于星形接法三相电动机的断相及短路保护,其特征在于:由动开触头[1]、衔铁(3)、复位弹簧[4]、导磁支架[5]、固定架[6]、电磁线圈(8)等组成。
地址
河南省三门峡市黄河路西段2号三楼科技情报所
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