Power distribution cabinet (box) includes power distribution cabinet (box), lighting distribution cabinet (box) and metering cabinet (box), which are the last level equipment of power distribution system. Power distribution cabinet is the general name of motor control center. The power distribution cabinet is used where the load is relatively dispersed and the circuit is less; Motor control center is used for occasions with concentrated load and many loops. They distribute the electric energy of a circuit of the upper level distribution equipment to the nearest load. This class of equipment shall provide protection, monitoring and control for the load.
classification:
(1) The primary power distribution equipment is collectively referred to as the power distribution center. They are centrally installed in the substation of the enterprise and distribute electric energy to the subordinate distribution equipment in different locations. This level of equipment is close to the step-down transformer, so the requirements for electrical parameters are high, and the output circuit capacity is also large. Power Distribution Cabinet,Reactive compensation cabinet,Feeder cabinet,Capacitor cabinet,Incoming/outgoing cabinet Henan New Electric Power Co.,Ltd. , https://www.newelectricpower.com
[Installation process]
1 Download the sofa butler installation package to the U disk → 2U disk to connect the TV → 3 read the U disk file → 4 to complete the installation
ã€Steps】 
(2) Secondary power distribution equipment is the general name of power distribution cabinet and motor control center. The power distribution cabinet is used where the load is relatively dispersed and there are few loops; Motor control center is used for occasions with concentrated load and many loops. They distribute the electric energy of a circuit of the upper level distribution equipment to the nearest load. This class of equipment shall provide protection, monitoring and control for the load.
(3) The final power distribution equipment is generally called lighting power distribution box. They are far away from the power supply center and are scattered small capacity power distribution equipment
Cool open 55U2 through U disk / SD card installed sofa housekeeper, this tutorial applies to cool open 55U2 and other similar models;
1. Baidu search for "sofa manager" into the sofa network, download the sofa butler package; or directly click the link (http://app.shafa.com/shafa.apk) to download the sofa butler package.
Copy the downloaded apk installation package to the U disk.
2. Connect the U disk with the sofa butler installation package to the USB interface of the CoolTV. Select “My†→ “Local Media†on the TV homepage.
3, press OK, the disk icon pops up, continue to press OK. Note that if the TV is connected to more than one USB flash drive at the same time, select the USB flash drive with the installation package.
4, find the sofa butler package, press Ok to install.
5, install a sofa butler.
6, complete the installation, open the sofa butler. Using the sofa butler, you can download any desired TV application.
If the installation fails, restart the device and try again by following the steps. Still have questions please add the following sofa butler official QQ group.
Watch on-demand video on smart TVs, recommend using a TV cat, watching live TV, and recommending live HDP; more interesting content, please use Tencent video TV version, Youku video TV version, etc. Fun smart TV and box, more exciting Content is on the sofa butler.