| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide the structure of a bus-bar insulating cover in a distribution board for a residence which visually and physically suppresses the unnecessary operation of a power-voltage switching actuator, in a distribution switching device mounted in the distribution board for the residence for supplying power to a distribution circuit, and which prevents unexpected electric accidents and damages of apparatuses before something happens. <P>SOLUTION: The bus-bar insulating cover covers the opening side of a cabinet positioned at a front side to the bus bar in each pole of a single-phase three-wire cable system, and maintains at least insulation at the front side of the bus bar. A power-supply connecting terminal is moved for arrangement in either of first and second positions corresponding to either of two bus bars by a power-voltage switching means in such a condition that the bus-bar insulating cover is mounted in a predetermined position inside the cabinet. In this arrangement, a controller for controlling the operation of the power-voltage switching actuator is installed in engagement with the actuator for operating the power-voltage switching means mounted in the distribution switching device, which serves to selectively connect the power-supply connecting terminal to the bus bar for supplying the voltage suitable to the distribution circuit. <P>COPYRIGHT: (C)2011,JPO&INPIT |
