保证电机控制柜中的任何机器设备接地装置优良，应用短和粗的接地联接到公共性接地址或接地装置铜排上。联接到变频调速器的一切控制系统(例如一台plc)要与其说共地，一样也需要应用短和粗的输电线接地装置。一般选用平扁电导体(例如金属丝网)，以其在高频率时特性阻抗较低。

Ensure that any machine equipment in the motor control cabinet has a good grounding device, and use short and thick grounding connections to the common grounding address or copper bar of the grounding device. All control systems connected to frequency converters (such as a PLC) need to use short and thick transmission line grounding devices, just as they need to be grounded together. Generally, flat electrical conductors (such as metal wire mesh) are chosen due to their lower characteristic impedance at high frequencies.

电机控制柜低电压模块，电磁阀，交流接触器应用断路器进行维护；当变频调速器到马达的连线超出100m时，当变频调速器供开关电源容积超过600kw/a或供电系统开关电源容积超过变频调速器容积的10倍时，提议增加键入输出电抗器。

Low voltage modules, solenoid valves, and AC contactors in the motor control cabinet should be maintained using circuit breakers; When the connection between the frequency converter and the motor exceeds 100m, and when the volume of the switching power supply provided by the frequency converter exceeds 600kw/a or the volume of the power supply system's switching power supply exceeds 10 times the volume of the frequency converter, it is proposed to increase the input output reactor.

保证电机控制柜中的交流接触器有磁吹作用，直流接触器选用r-c抑制器，直流接触器采用“齿轮”二极管，装进绕阻中。选用氧化锌压敏电阻抑制器也是很合理的。

Ensure that the AC contactor in the motor control cabinet has a magnetic blowing effect. The DC contactor uses an R-C suppressor, and the DC contactor uses a "gear" diode, which is installed in the winding resistor. It is also reasonable to choose a zinc oxide varistor suppressor.

假如机器设备运作在一个对噪音比较敏感的条件中，可以选用过滤器减少辐射源影响。与此同时为了更好地做到较好的实际效果，保证过滤器与组装板中间应该有较好的触碰。

If the machine equipment operates under conditions that are sensitive to noise, filters can be selected to reduce the impact of radiation sources. At the same time, in order to achieve better practical results, there should be good contact between the filter and the assembly board.

电动机线缆应与其他变频电缆分离布线，其较小间距为500mm。与此同时应防止电动机电缆线与变频电缆远距离平行面布线。假如变频电缆和主机电源电缆线交叉式，应尽量使他们按90°角交叉式。与此同时务必用适合的卡子将电动机电缆线和变频电缆的屏弊层固定不动到组装板上。

The motor cables should be separated from other variable frequency cables for wiring, with a smaller spacing of 500mm. At the same time, it is necessary to prevent the long-distance parallel wiring of motor cables and frequency conversion cables. If the frequency conversion cable and the host power cable are crossed, they should be crossed at a 90 ° angle as much as possible. At the same time, it is necessary to use suitable clips to fix the shielding layer of the motor cable and variable frequency cable onto the assembly board.

为了更好地合理的抑止无线电波的覆盖和传输，变频调速器的电动机电缆线务必选用屏蔽双绞线，屏蔽掉层的电导率务必少为每相输电线芯的电导率的1/10。

In order to better and reasonably suppress the coverage and transmission of radio waves, shielded twisted pair cables must be selected for the motor cables of the frequency converter. The conductivity of the shielded layer must be at least 1/10 of the conductivity of each phase of the transmission line core.

电机控制柜应各自设定零线排组及保护区线排组（pe）。接地装置排组和pe导电性排务必收到承重梁上(铜排到铜排连接)。他们需要在电缆线旋盖处正对着的周边部位。接地装置排组附加还需要根据另一个的电缆线与维护电源电路(接地装置电排)联接。屏蔽掉系统总线用以保证每个电缆线的屏蔽掉联接靠谱，它根据一个承重梁完成大规模的金属材料到金属连接。

The motor control cabinet should each be equipped with a zero line busbar group and a protection zone busbar group (PE). The grounding device and PE conductive busbar must be connected to the load-bearing beam (copper bar to copper bar connection). They need to face the surrounding area directly at the cable cap. The additional grounding device bank also needs to be connected to the maintenance power circuit (grounding device bank) based on another cable line. Shielding the system bus is used to ensure reliable shielding and connection of each cable line. It completes large-scale metal to metal connections based on a load-bearing beam.

不可以将配有显示屏的实际操作面板安装在挨近电缆线和含有电感线圈的机器设备边上，例如开关电源电缆线，交流接触器，电磁阀，磁感线阀，变电器这些，由于他们可以形成较强的电磁场，危害仪表设备的测量精度。

It is not allowed to install the actual operation panel equipped with a display screen near the power cables and machine equipment containing inductive coils, such as switch power cables, AC contactors, solenoid valves, magnetic induction line valves, transformers, etc., as they can form strong electromagnetic fields and endanger the measurement accuracy of instrument equipment.

输出功率构件(变电器，推动构件，负荷输出功率开关电源这些)与控制系统(电磁阀操纵一部分，程序控制器)务必要单独组装。可是并不适合用以输出功率构件与控制系统设计方案为一体的商品，变频调速器和过滤器的塑料外壳，都应当用低电阻器与电控柜联接，以减小高频率一瞬间电流量的冲击性。理想化的情形是将控制模块组装到一个导电性优良，灰黑色的金属材料板材上，并将金属组装到一个大的金属材料台表面。

The output power components (transformer, propulsion components, load output power switch power supply, etc.) and the control system (electromagnetic valve control part, program controller) must be assembled separately. However, it is not suitable for products that integrate output power components and control system design schemes. The plastic casings of variable frequency governors and filters should be connected to the electrical control cabinet with low resistors to reduce the impact of high-frequency instantaneous current. The ideal scenario is to assemble the control module onto a conductive, gray black metal material sheet, and assemble the metal onto a large metal material table surface.

设计方案电机控制柜体时要留意emc的地区标准，把不一样的机器设备整体规划在不一样的地域中。每一个地区对环境噪声的发送和抗干扰性度有不一样的规定。地区在区域上较实用金属材料壳或在柜身体内用接地装置防护板隔离。而且考虑到热值，电机控制柜的风管要制定有效，排风系统顺畅，防止在柜里产生涡旋，在确定的地方产生尘土沉积。风机一般安裝在挨近通风口处，送风风机安裝在下边，进风口风机安裝在箱体的上端。

When designing the motor control cabinet, attention should be paid to the regional standards of EMC, and different machinery and equipment should be planned as a whole in different regions. Each region has different regulations on the transmission and anti-interference level of environmental noise. Metal material shells are more practical in the region, or grounding devices and protective plates are used to isolate the cabinet body. Moreover, considering the calorific value, the air ducts of the motor control cabinet should be effectively designed, and the exhaust system should be smooth to prevent vortices and dust deposition in the cabinet at designated locations. The fan is generally installed near the ventilation opening, the supply fan is installed at the bottom, and the inlet fan is installed at the upper end of the box.

依据控制箱内设施的防水等级，必须考虑到控制箱防污及其防水作用，一般应用的设施主要是为：空调，风机，换热器，抗冷疑电加热器。与此同时依据箱体的多少适宜的选用不一样效率的机器设备。有关风机的挑选，关键考虑到柜里正常的操作温度，柜外较高工作温度，求取一个温度差，风机的通气速度，估计出柜里气体容积。已经知道三个数据信息：温度差，通气速度，气体容积后，求取柜里气体拆换一次的时长，随后根据温度差测算求取具体要的通气速度。进而挑选具体要的风机。由于一般晚间，环境温度降低，故会造成凝结水，依附于在柜里电路板上，因此要选取相对应的抗冷疑电加热器以保证柜里环境温度。

According to the waterproof level of the facilities inside the control box, it is necessary to consider the anti fouling and waterproof function of the control box. Generally, the facilities used are: central air conditioning, fans, heat exchangers, and anti cooling electric heaters. At the same time, different efficiency machines and equipment should be selected according to the number of boxes. Regarding the selection of fans, the key consideration is the normal operating temperature inside the cabinet and the higher working temperature outside the cabinet. Calculate a temperature difference, the ventilation speed of the fan, and estimate the gas volume inside the cabinet. After knowing three data information: temperature difference, ventilation speed, and gas volume, calculate the duration of gas replacement in the cabinet, and then calculate the specific ventilation speed based on the temperature difference. Then select the specific fan you want. Due to the general decrease in ambient temperature at night, condensation water may be generated and attached to the circuit board inside the cabinet. Therefore, corresponding anti cold electric heaters should be selected to ensure the ambient temperature inside the cabinet.

变频调速器连接的主要规定变频调速器不错组装在控制箱内的中间，变频调速器要竖直组装，上方和下方要防止很有可能阻拦排风系统、送风的大元器件；变频调速器上、下边边沿间距，电机控制柜顶端、底端间距，或是挡板和务必安装使用的大元器件的较小间隔，都应当超过150mm；假如独特客户在运用中必须拿掉电脑键盘，则变频调速器控制面板的电脑键盘孔，一定要用胶布严苛密封性或是选用假控制面板更换，避免烟尘大量的进到变频调速器内部结构。

The main regulations for connecting frequency converters are that they should be assembled in the middle of the control box. The frequency converter should be assembled vertically, and the upper and lower parts should prevent large components that may obstruct the exhaust system and air supply; The distance between the upper and lower edges of the frequency converter, the distance between the top and bottom of the motor control cabinet, or the smaller distance between the baffle and the large components that must be installed and used, should all exceed 150mm; If a unique customer must remove the computer keyboard during use, the computer keyboard hole on the frequency converter control panel must be tightly sealed with adhesive tape or replaced with a fake control panel to prevent a large amount of smoke and dust from entering the internal structure of the frequency converter.