| 摘要 |
<p>PURPOSE:To make a control current monitor device inexpensive by providing a measuring means for measuring a waveform of a control current, on a control power source side from the first branch point of the control power source side of a control power source bus. CONSTITUTION:An expensive measuring means 60 provided with a current sensor, and a data recording device for sampling and quantizing an analog waveform of a control current which has been detected by said sensor, and also converting it to strings of a series of discrete numerical values and storing it is provided on a control power source 1 side from the first branch point P1, of a control power source bus 2 which is led out of the control power source land makes a tripping control current and a closing control current branch and supplies them to plural circuit breakers. In this way, all the circuit breakers can be decided by only one measuring means at all times, irrespective of the number of sets of the circuit breaker.</p> |
