| 摘要 |
PURPOSE: To monitor a motor current at the starting of a motor on a real-time basis by a meter by converting the current in the case of the starting of the motor into absolute value data corresponding to the meter of a triple scale and by transmitting them to an analog output transmission slave station at the timing matched with the characteristics of the motor. CONSTITUTION: In a transmission system comprising motor protective relays 3a1 and 3a2 and analog output transmission slave stations 51 and 52, triple-scale data on current values corresponding to meters 61 and 62 of a triple scale connected to the analog output transmission slave stations 51 and 52 respectively are transmitted to the analog output transmission slave stations 51 and 52 at an arbitrary timing by the motor protective relays 3a1 and 3a2 at the starting of motors. |
