发明名称 DIGITAL PROTECTIVE RELAY
摘要 PURPOSE:To prevent false setting by automatically performing comparison between a new setting value and an old setting value upon setting operation, and recording the comparison result. CONSTITUTION:When a setting start switch in an operating circuit 11 is turned ON, a control circuit 13 receives a set value and stores the set value at a new set value area 141 in a memory 14 while stores an old set value 142 at an old set value area 142. When a set finish switch is turned ON, the control circuit 13 provides the comparison result between the new and old set values to a recording circuit 15.
申请公布号 JPH02184217(A) 申请公布日期 1990.07.18
申请号 JP19890001307 申请日期 1989.01.09
申请人 TOSHIBA CORP 发明人 HACHISUGA TSUTOMU
分类号 H02H3/02 主分类号 H02H3/02
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