1.节制的启动电流当机电工频间接启动时，它将会发生7至8倍的机电额定电流，这个电流值将大大增添绕组的电应力并发生热量，从而低落的寿命。而变频调速则能够零速零电压护将进一步低落、机电的寿命则响应。
2.启动时必要的功率更低机电功率与电流和电压的乘积成反比,那么经由过程工频间接启动的机电的功率将大大高于变频启动必要的功率。正在一些工况下其配电体系了*极限，其间接工频启动机电发生的电涌就会对同网上的其他用户发生的影响。若是变频器举行起停,就不会发生的题目。
Siemens has a * universal and * Deep software portfolio in the fields of electronics and machinery, system simulation, manufacturing, operation and life cycle analysis. Xcelerator integrates this software combination with embedded things and databases that connect existing information technology, operation skills and engineering technology to realize the flow of things that enrich Siemens technology. Capital software from mentor has been embedded into NX software, so that * of various engineering disciplines can create new products. Siemens' opcenter management has been integrated with valor software to expand the digital thread from imagination to manufacturing and realize the continuity of quality. In additioesearch of products and consumption.
What does Siemens inverter have?
1. Controlled starting current
when the electromechanical power frequency is indirectly started, it will generate 7 to 8 times the electromechanical rated current, which will greatly increase the electrical stress of the winding and generate heat, thus reducing the service life. Variable frequency speed regulation can start at zero speed and zero v
2. The necessary power is lower when starting
the electromechanical power is inversely proportional to the product of current and voltage, so the power of electromechanical indirectly started by power frequency will be much higher than the power necessary for variable frequency starting. Under some working conditions, its power distribution system has reached its limit, and the surge of its indirect power frequency starter will have an impact on other users on the same network. If the frequency converter starts and stops, there will be no problem.
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