电气成套装配中存在的问题：空开下出线多股并线；空开上进线多负载并线；空开进出线的线径不一致；不同线径随意并线；线缆颜色使用不规范；常用电线颜色定义：三相交流：黄/绿/红色；单相交流红色；24V直流蓝色；I/O线灰色；模拟量白色；中性线浅蓝色；PE线黄绿色。

Problems existing in electrical assembly and distribution: multi-strand parallel connection of outgoing line under air switch; Multi-load parallel connection of air switch upper incoming line; The wire diameter of the incoming and outgoing lines of the air switch is inconsistent; Different wire diameters are randomly combined; The use of cable color is not standard; Common wire color definition: three-phase AC: yellow/green/red; Single-phase AC red; 24V DC blue; I/O line is gray; Analog quantity white; Neutral wire light blue; PE line is yellow and green.

变频器柜装配中存在的问题：驱动装置的信号线悬空，未做固定处理，亦未做屏蔽接地处理；驱动装置布置安装不合理，应与进线滤波器电抗器一起单独组柜，不宜采用面板式安装，而应采用框架方式安装；大型驱动装置电机电缆一般不应该再经过端子过渡，而应直接出线；电机电缆应使用屏蔽电缆，屏蔽层应抱箍；系统进线布置设计不合理，阻挡驱动装置冷却风道；主进线不宜使用端子，应采取铜排结构件压接电缆方式；DP总线未正确的固定与屏蔽，CU320模块的用于固定与屏蔽电缆线的附件缺失。

Problems existing in the assembly of the converter cabinet: the signal line of the drive device is suspended and has not been fixed or grounded; The layout and installation of the drive device is unreasonable. It should be separately grouped together with the incoming filter reactor. It is not suitable to adopt panel installation, but should adopt frame installation; The cable from the large drive device to the motor should not pass through the terminal transition, but should be directly led out; The motor cable shall be shielded cable, and the shielding layer shall be hooped; The layout design of the system incoming line is unreasonable, blocking the cooling air duct of the drive device; Terminals should not be used for the main incoming line, and the copper bar structure should be used to crimp the cable; The DP bus is not properly fixed and shielded, and the accessories for fixing and shielding the cable of the CU320 module are missing.

编码器线，装置通讯线随意悬空，未作固定，编码器线亦未作屏蔽；CU320控制单元及接口模块均未做接地处理；传动装置未安装屏蔽附件，安装位置偏低，且被线槽阻挡，导致冷却风道被阻挡，装置进出线不合理；柜体进线位置设计不合理；主开关出线采用并线，接触电阻增大，易发热；母排设计结构不合理，进出线混乱，大截面线存在绕圈布线的现象；母排与底板，母排与母排，各相电线之间的绝缘间距不够；母排截面积小于进线截面积，并且大量打孔，导致有效截面积进一步减小，从而导致载流量减小。

Encoder line and device communication line are suspended at will, not fixed, and encoder line is not shielded; CU320 control unit and interface module are not grounded; The transmission device is not equipped with shielding accessories, the installation position is low, and it is blocked by the trunking, resulting in the blocking of the cooling air duct, and the inlet and outlet lines of the device are unreasonable; The design of the incoming line position of the cabinet is unreasonable; The outgoing line of the main switch adopts parallel connection, which increases the contact resistance and is easy to generate heat; The design structure of the busbar is unreasonable, the incoming and outgoing lines are disordered, and the large-section lines are looped; The insulation distance between the busbar and the base plate, between the busbar and the busbar, and between the wires of each phase is not enough; The sectional area of the busbar is smaller than that of the incoming line, and a large number of holes are drilled, resulting in a further reduction of the effective sectional area, thus reducing the carrying capacity.

接地点错误，无接地效果；未与系统PE连接；未使用编织带接地，接地线不能打圈；未与系统PE连接；接地排截面积小于进线截面积；接地排过多的打孔更减小截面积；接地并线，增加接地阻抗；柜体安装底板，框架均未接地；未采取分层接地的措施；通讯电缆与强电电缆平行敷设；通讯线屏蔽层强制接地在绝缘部位。还有什么使用问题可以随时来我们网站http://www.tongyuhengcheng.com咨询！

Wrong grounding point, no grounding effect; Not connected with system PE; The braided belt is not used for grounding, and the grounding wire cannot be circled; Not connected with system PE; The sectional area of the grounding bar is less than that of the incoming line; Too many holes in the grounding bar can reduce the sectional area; Grounding and line connection to increase grounding impedance; The base plate of the cabinet body and the frame are not grounded; No layered grounding measures are taken; Communication cable and strong current cable are laid in parallel; The shielding layer of the communication line is forced to be grounded at the insulating part. If you have any use problems, please come to our website at any time http://www.tongyuhengcheng.com consulting service