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发明名称
三相电机断相保护开关
摘要
一种三相电机断相保护开关,包括空气开关和晶体管电路控制板。晶体管电路控制板由整流电路、放大电路和互感器信号输入电路串联而成,在空气开关上加一脱扣器,并受晶体管电路板控制。本实用新型安装方便、操作简单、成本低廉、能直接与开关配套使用、电耗低。
申请公布号
CN2409696Y
申请公布日期
2000.12.06
申请号
CN99249864.3
申请日期
1999.12.07
申请人
蒋荣跃
发明人
蒋荣跃
分类号
H02H7/09
主分类号
H02H7/09
代理机构
代理人
主权项
1、一种三相电机断相保护开关,包括空气开关和晶体管电路控制板,其特征在于:晶体管电路控制板由整流电路、放大电路和互感器信号输入电路串联而成,在空气开关上加一脱扣器J,并受晶体管电路板控制,在晶体管电路板上的放大电路中,三极管放大器BG的集电极上串联有脱扣器J,整流电路供给放大电路工作电源,互感器信号输入电路由三个晶体管BG1、BG2、BG3的集电极、发射极依次串接组成,而三个晶体管BG1、BG2、BG3的基极分别连接三相电源的互感器L1、L2、L3。
地址
425300湖南省道县道江镇月岩中路40号
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