（天津西门子变频器）==天津西门子变频器代理商-天地通
  控制回路的通断测试请用万用表的高阻档，不要使用兆欧表和蜂鸣器；
（3）变频器机身的兆欧表测试时，仅在主回路中实施，拆下变频器接线，将端子R、S、T、U、V、W一齐短路用500VDC兆欧表测量它与接地端子间的电阻，应在5MΩ以上；
2、固定检查和加强固定：由于振动、温度变化的影响，螺丝、螺栓等紧固件发生松动，应经常检查维护，并将其拧紧。
检查逆变器模块和整流桥模块：  
西门子变频器MM440      
标准规格：（通用型）      
●                                相数，电压，频率：单相220V        三相380V                50/60Hz      
●                                过载电流额定：额定输出电流的110%-1min      
●                                额定频率：50，60Hz      
●                                输出频率范围：        0Hz~        650Hz      
相应型号：（0.37KW～200KW）      
适用电动机容量KW                三相380V                单相220V      
                6SE6440-2UD13-7AA1                6SE6440-2UC13-7AA1      
                6SE6440-2UD15-5AA1                6SE6440-2UC15-5AA1      
                6SE6440-2UD17-5AA1                6SE6440-2UC17-5AA1      
                6SE6440-2UD21-1AA1                6SE6440-2UC21-1BA1      
                6SE6440-2UD21-5AA1                6SE6440-2UC21-5BA1      
                6SE6440-2UD22-2AA1                6SE6440-2UC22-2BA1      
                6SE6440-2UD23-0BA1                              
                6SE6440-2UD24-0BA1                              
                6SE6440-2UD25-5CA1                              
                6SE6440-2UD27-5CA1                              
                6SE6440-2UD31-1CA1                              
                6SE6440-2UD31-5DB1                              
                6SE6440-2UD31-8DB1                              
                6SE6440-2UD32-2DB1                              
                6SE6440-2UD33-0EB1                              
                6SE6440-2UD33-7EB1                              
                6SE6440-2UD34-5FB1                              
                6SE6440-2UD35-5FB1                              
                6SE6440-2UD37-5FB1                              
                6SE6440-2UD38-8FB1                              
                6SE6440-2UD41-1FB1                              
                6SE6440-2UD41-3GB1                              
                6SE6440-2UD41-6GB1                              
                6SE6440-2UD42-0GB1                              
西门子变频器6SE6430              
        西门子变频器MM430      
标准规格：（风机水泵型）      
●                                相数，电压，频率：单相220V        三相380V                50/60Hz      
●                                过载电流额定：额定输出电流的150%-1min      
●                                额定频率：50，60Hz      
●                                输出频率范围：        0Hz~        650Hz      
相应型号：（7.5KW～250KW）      
适用电机容量KW                三相380V                适用电机容量KW                三相380V      
                6SE6430-2UD27-5CA0                                6SE6430-2UD35-5FB0      
                6SE6430-2UD31-1CA0                                6SE6430-2UD37-5FB0      
                6SE6430-2UD31-5CA0                                6SE6430-2UD38-8FB0      
                6SE6430-2UD31-8DB0                                6SE6430-2UD41-1FB0      
                6SE6430-2UD32-2DB0                                6SE6430-2UD41-3FB0      
                6SE6430-2UD33-0DB0                                6SE6430-2UD41-6GB0      
                6SE6430-2UD33-7EB0                                6SE6430-2UD42-0GB0      
                6SE6430-2UD34-5EB0                                6SE6430-2UD42-5GB      
西门子变频器6SE6420              
        西门子变频器MM420      
标准规格：（小功率通用型）      
●                                相数，电压，频率：单相220V        三相380V                50/60Hz      
●                                过载电流额定：额定输出电流的150%-1min      
●                                额定频率：50，60Hz      
●                                输出频率范围：        0Hz~        650Hz      
相应型号：（0.37KW～11KW）      
              
适用电动机容量KW                单相220V                三相380V      
                6SE6420-2UC13-7AA1                6SE6420-2UD13-7AA1      
                6SE6420-2UC15-5AA1                6SE6420-2UD15-5AA1      
                6SE6420-2UC17-5AA1                6SE6420-2UD17-5AA1      
                6SE6420-2UC21-1BA1                6SE6420-2UD21-1AA1      
                6SE6420-2UC21-5BA1                6SE6420-2UD21-5AA1      
                6SE6420-2UC22-2BA1                6SE6420-2UD22-2BA1      
                                        6SE6420-2UD23-0BA1      
                                        6SE6420-2UD24-0BA1      
                                        6SE6420-2UD25-5CA1      
                                        6SE6420-2UD27-5CA1      
                                        6SE6420-2UD31-1CA1      
本文论述的是笔者在多年的变频器的现场操作与实践中，总结出的一些行之有效的检查和维护的经验和方法，具有良好的实践性和操作性，可为其他种类变频器的检查和维护提供重要的参考和借鉴价值。      
关键词：        变频器        检查                        维护      
观察导体、绝缘体是否发生腐蚀破坏，