PURPOSE:To reduce working time by a number of operation devices to a single relay element and operating the data signals with the different phase of each operation device, respectively, then using trip signals as the logical sum (OR).
申请公布号
JPS5419147(A)
申请公布日期
1979.02.13
申请号
JP19770083919
申请日期
1977.07.13
申请人
TOKYO ELECTRIC POWER CO;MEIDENSHA ELECTRIC MFG CO LTD