西门子资料专区

简介：
问题： 用软起动器3RW44替换3RW22和3RW34时需要做哪些方面的考虑？解答： 需要记住的是，软起动器3RW44的性能和技术参数，特别是功率范围，与3RW22/3RW34是不同的。特别注意电机的额定电流，每小时起动频繁的负载，起动转矩很大的负载以及额定电压和控制电压等参数对于替换型号存在很大差别。因此，在没有详细信息的情况下，不能进行3RW44对3RW22/3RW34的替换。替换型号是基于软起动器应用考虑的，在必要的情况下应选用更大规格的3RW44软起动器。 条目号:35658871 日期:2009-04-22 QUESTION: What has to be considered with conversions from soft starter 3RW22 and 3RW34 to 3RW44? ANSWER: Please keep in mind, that the properties and technical characteristics of the 3RW44 soft starter, especially of the power electronics, are different from the 3RW22/3RW34. Especially the permissible rated motor current, the starts per hour at higher loads, those particularly at heavy startings, the rated operational voltage and the rated control supply voltage are seriously different. Thus, conversion from 3RW22/3RW34 to 3RW44 is not possible without further information. The application which is based on the use of the soft starter shall be taken into account and if necessary, a bigger sized soft starter 3RW44 has to be selected. Entry ID:35658871 Date:2009-04-14