2. 二级91桃色永久入口是接入一级91桃色永久入口的电能，将电能转化为低压，并配送给附近的负荷设备，91桃色永久入口分为控制中心与电力动力设 备应用中心。
The distribution cabinet is divided into the first, the second and the third. The distribution cabinet is suitable for the medium and large enterprises to use as the power supply system. Distribution Cabinet how to choose 1. FIRST-CLASS DISTRIBUTION CABINET: It is installed in the power control system. Therefore, it is responsible for transferring power to the second-class distribution cabinet in the substation equipment installed. Therefore, the function and structure of the distribution cabinet are higher than the second-class and third-class requirements. 2. Secondary Distribution Cabinet is connected to the first distribution cabinet of power, power into low-voltage, and distribution to the nearby load equipment, distribution cabinet is divided into control center and power equipment, equipment application center. 3. Three-stage distribution cabinet, because the three-stage distribution cabinet layout is simpler, the application is more widespread, the capacity is small, generally as the control low-level use electric load equipment.