| 摘要 |
PURPOSE:To enable indication of circuits, phase, fault point distance, fault occurence time and the like on a plurality of faults by separately memorizing results from the computation to identify fault points thereof while the order of faults to be indicated is selected properly. CONSTITUTION:An arithmetic memory section 16, an input section 20 and an interface 17 are separately connected to a bus 21. A first switch 22 for selecting the order of faults, a second switch 23 for demanding indixation and a third switch 24 for turning off indication are separately connected to a digital input interface 171. A first display 25 for indicating the total frequency of faults, a second display 26 for indicating circuits and the phase of faults and a third display 27 for indicating the distance of fault points are separately connected to a digital output interface 172. According to an external command, circuits, the phase,the falt point distance, fault occurance time and the like can be indicated. |
