| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a control systems for a plurality of electric water heaters by which electric capacity to be used can be rationalized when the plurality of electric water heaters is installed. <P>SOLUTION: The control system is provided with a power supply control means for setting respective electric hot water heaters P in each group and power is alternately supplied to respective groups in each unit time. Safety control time in which power is not supplied to any group is set in the switching time of alternate power supply by the power supply control means. The power supply control means is attached to each electric hot water supplier. The control system is provided with a power supply controller for commanding power supply or interruption to respective electric hot water heaters and a counting means for counting the unit time of each group. Power supply is controlled independently in each group by the unit time counted in each group. When a plurality of stock type hot water heaters are installed, the system can rationalize electric capacity to be used. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
