| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving control system for electromagnetic switchgears which can constantly and economically retain stable operation of a main circuit against fluctuation of electric power in a single and independent electric power system without a supplemental electric power source, for example a solar power plant and provide an electronic control circuit for the system. SOLUTION: In an electronic control circuit of a d.c. circuit produced by connecting differently rated electromagnetic switchgears MGI, aiming voltage for use, which is out of the upper limit and the lower limit of the respectively rated voltage is applied to urging coils of the electromagnetic switchgears MG1 and the variable resistor VR1 connected with the urging coils is adjusted to adjust the load voltage of the urging coils and drive the electromagnetic switchgears MG1 at voltage out of the upper limit and the lower limit of the rated voltage and the opening and closing contact point (a) based on the driving operation is employed for the opening and closing operation of another circuit besides the electronic control circuit. |
