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1. 发明授权

US4246557A Bell alarm for circuit breaker 失效
标题翻译：断路器铃声报警器
公开(公告)号：US4246557A
公开(公告)日：1981-01-20
申请号：US52288
申请日：1979-06-26
申请人： Anthony Michetti , Charles Warner , John Rowan
发明人： Anthony Michetti , Charles Warner , John Rowan
IPC分类号： H01H71/46 , H01H71/52 , H01H73/12
CPC分类号： H01H71/46 , H01H2071/467 , H01H71/525
摘要： A multipole circuit breaker having a single contact operating mechanism for all poles and a fault current sensing means for automatic tripping of the breaker is provided with alarm switch means to indicate when opening of the circuit breaker has been caused by a fault condition. The operating mechanism includes a metal frame to which a latchable cradle is pivotally mounted. The frame includes parallel guide slots through which a formed pin actuator extends to be moved by the cradle as it operates between its latched and released (tripped) positions. A spring connected between the mechanism frame and the pin actuator biases the latter toward the cradle. An insulating extension element is adjustably mounted on the actuator to transmit motion of the latter to operate a switch in an alarm circuit, in accordance with cradle position.
摘要翻译：具有用于所有极的单个接触操作机构的多极断路器和用于断路器的自动跳闸的故障电流检测装置设置有报警开关装置，用于指示断路器的断路是否由故障状况引起。操作机构包括可枢转地安装有可闩锁托架的金属框架。框架包括平行的引导槽，成形的销致动器通过该引导槽延伸，以在支架在其锁定和释放（跳闸））位置之间操作时被托架移动。连接在机构框架和引脚致动器之间的弹簧将其朝向支架偏压。绝缘延伸元件可调节地安装在致动器上，以根据托架位置传递后者的运动以操作报警电路中的开关。

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