電氣成套裝配中存在的問題：空開下出線多股并線；空開上進(jìn)線多負(fù)載并線；空開進(jìn)出線的線徑不一致；不同線徑隨意并線；線纜顏色使用不規(guī)范；常用電線顏色定義：三相交流：黃/綠/紅色；單相交流紅色；24V直流藍(lán)色；I/O線灰色；模擬量白色；中性線淺藍(lán)色；PE線黃綠色。

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.

變頻器柜裝配中存在的問題：驅(qū)動裝置的信號線懸空，未做固定處理，亦未做屏蔽接地處理；驅(qū)動裝置布置安裝不合理，應(yīng)與進(jìn)線濾波器電抗器一起單獨(dú)組柜，不宜采用面板式安裝，而應(yīng)采用框架方式安裝；大型驅(qū)動裝置電機(jī)電纜一般不應(yīng)該再經(jīng)過端子過渡，而應(yīng)直接出線；電機(jī)電纜應(yīng)使用屏蔽電纜，屏蔽層應(yīng)抱箍；系統(tǒng)進(jìn)線布置設(shè)計不合理，阻擋驅(qū)動裝置冷卻風(fēng)道；主進(jìn)線不宜使用端子，應(yīng)采取銅排結(jié)構(gòu)件壓接電纜方式；DP總線未正確的固定與屏蔽，CU320模塊的用于固定與屏蔽電纜線的附件缺失。

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.

編碼器線，裝置通訊線隨意懸空，未作固定，編碼器線亦未作屏蔽；CU320控制單元及接口模塊均未做接地處理；傳動裝置未安裝屏蔽附件，安裝位置偏低，且被線槽阻擋，導(dǎo)致冷卻風(fēng)道被阻擋，裝置進(jìn)出線不合理；柜體進(jìn)線位置設(shè)計不合理；主開關(guān)出線采用并線，接觸電阻增大，易發(fā)熱；母排設(shè)計結(jié)構(gòu)不合理，進(jìn)出線混亂，大截面線存在繞圈布線的現(xiàn)象；母排與底板，母排與母排，各相電線之間的絕緣間距不夠；母排截面積小于進(jìn)線截面積，并且大量打孔，導(dǎo)致有效截面積進(jìn)一步減小，從而導(dǎo)致載流量減小。

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.

接地點(diǎn)錯誤，無接地效果；未與系統(tǒng)PE連接；未使用編織帶接地，接地線不能打圈；未與系統(tǒng)PE連接；接地排截面積小于進(jìn)線截面積；接地排過多的打孔更減小截面積；接地并線，增加接地阻抗；柜體安裝底板，框架均未接地；未采取分層接地的措施；通訊電纜與強(qiáng)電電纜平行敷設(shè)；通訊線屏蔽層強(qiáng)制接地在絕緣部位。還有什么使用問題可以隨時來我們網(wǎng)站http://www.levojia.cn咨詢！

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.levojia.cn consulting service