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Method of setting a ground fault trip function for a trip unit and a trip unit having a defined trip function for ground fault protection
Method of setting a ground fault trip function for a trip unit and a trip unit having a defined trip function for ground fault protection
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机译:为跳闸单元设置接地故障跳闸功能的方法以及具有用于接地故障保护的已定义跳闸功能的跳闸单元
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摘要
A method (20) of setting a trip ground fault trip function for a trip unit (4) includes enabling a ground fault protection mode for the trip unit (4), and setting one of a plurality of a trip functions (60, 80) for the trip unit. At least one of the plurality of trip functions (60, 80) being an I^4t inverse time function (100) that establishes a trip characteristic to interrupt current upon sensing a ground fault indication. The method further includes monitoring an electrical circuit (10) for a ground fault.
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