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电教室,舞厅,电影、电视观众厅等场所的电气照明往往采用两只双控开关在两个地点控制一套灯。由于这些场所要求照度高,故使用照明设备的功率也大,现市场出售的双控开关额定电流都在5～10安,远远不能适应大功率的要求。为此,可用一只常用的组合转换开关稍加改装,即可获得一个大功率双控开关。将 HZ10型二级组合开关拆开,按图示下层动触片按原位置不动,上层动触片按A_1-A_2位置重新放置,即将上层动触片调转90°安装,再将方形轴固定在原中心位置内,
Electric lighting in classrooms, ballrooms, movies, TV auditoriums and other places often uses two dual-control switches to control one set of lights at two locations. Because these places require high illumination, the power used by the lighting equipment is also large. The currents of the dual-control switches sold in the market are all 5 to 10 amps, which is far from meeting the requirements of high power. For this purpose, a frequently used combination switch can be used with a small modification to obtain a high power double switch. The HZ10 type secondary combination switch is disassembled, and the lower layer movable contact sheet according to the figure is not moved according to the original position, and the upper movable contact sheet is repositioned according to A_1-A_2 position, that is, the upper movable contact sheet is rotated 90° to install, and then the square shaft is fixed In the original center,