公开(公告)号：US5596473A

公开(公告)日：1997-01-21

申请号：US384728

申请日：1995-02-06

申请人： Richard A. Johnson ,  Joseph C. Engel ,  Michael F. Boccabella ,  David M. Oravetz ,  James I. Wise

发明人： Richard A. Johnson ,  Joseph C. Engel ,  Michael F. Boccabella ,  David M. Oravetz ,  James I. Wise

IPC分类号： G01R31/00 ,  H02H3/00 ,  H02H3/04 ,  H02H3/093 ,  H02J13/00

CPC分类号： H02H3/044 ,  H02H3/006 ,  H02H3/0935

摘要： An electrical switch with overcurrent protection communicates as a slave with a remote master station by sending return messages to the remote master station only in response to messages addressed to it. A portable unit plugs into the electrical switch and disables communications between the electrical switch and the remote master station. The portable unit then establishes communications with the electrical switch by sending a global message to the electrical switch requesting the unique address at successive baud rates until a return message containing the electrical switches' address is received. A communications module in the electrical switch transfers to a master mode in response to the global message in order to send the return message containing its unique address. It then reverts to the slave mode for response to subsequent messages from the portable unit containing the unique address. Either the remote master station or the portable unit can test the circuit breaker by sending a message containing a digital test current to the circuit breaker.

摘要翻译： 具有过电流保护功能的电气开关只能通过向远程主站发送返回消息，作为远程​​主站的从站，仅响应于寻址到远程主站的消息。 便携式设备插入电气开关并禁用电气开关和远程主站之间的通信。 然后，便携式单元通过向电气开关发送全局消息来建立与电气开关的通信，以电连接波特率请求唯一地址，直到接收到包含电开关地址的返回消息。 电气开关中的通信模块响应于全局消息传送到主模式，以便发送包含其唯一地址的返回消息。 然后，它恢复到从模式，以响应来自包含唯一地址的便携式单元的后续消息。 远程主站或便携式单元都可以通过向断路器发送包含数字测试电流的消息来测试断路器。