| 摘要 |
PURPOSE:To simply expand a DC power supply device matched to the power supply capacity of an indoor machine for an outdoor machine without providing a DC power supply device with a power supply capacity which is more than necessary at the outdoor machine. CONSTITUTION:DC power supply devices 104a and 14b matched to the power supply capacity of indoor machines 106a and 106b connected to an outdoor machine 103 of an air-conditioning equipment are provided at the outdoor machine 103, the DC power supply devices 104a and 104 are connected in parallel, and power is supplied to the indoor machines 106a and 106b via a DC power supply line 105. The DC power supply devices 104a and 104b are made to function as modules to cope with the expansion of the indoor machines and are structured so that they can be attached and detached easily, the execution property is improved, and the maintenance property is improved. Further, a DC power supply device with a required power supply capacity or larger is not installed at the outdoor machine and load current is distributed by a plurality of DC power supply devices 104a and 104b, thus reducing the rating of electrical parts, cost, and the temperature increase of parts. |
