双电源配电箱是按照电气接线的要求将开关设备、测量仪表、保护电器和辅助设备，组装在封闭或是半封闭的金属柜中或者屏幅上，构成双电源配电箱。在正常运行的时候可以借助手动或是自动开关接通/分断电路。在发生故障的时候或是在不正常运行的时候，借助保护电器切断电路或是报警。借助测量仪表能够显示运行中的各种参数，还可以对某些电气参数进行调整，对正在或是已经偏离正常工作状态的时候进行提示或发出信号。

The dual power distribution box is composed of switch equipment, measuring instrument, protective appliance and auxiliary equipment according to the requirements of electrical wiring, which are assembled in closed or semi closed metal cabinet or on the screen, and form a double power distribution box. During normal operation, the circuit can be switched on or broken by manual or automatic switch. In case of malfunction or abnormal operation, cut off the circuit or alarm by means of protective device. The instruments can display various parameters in the operation, and some electrical parameters can be adjusted to prompt or signal when they are already deviating from the normal working state.