3/8/2013 4:14 PM | |
Joined: 10/11/2006 Last visit: 9/18/2024 Posts: 5906 Rating: (804)
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Dear Mr./ Ms. Moiz I don't think, that you will get phenomenon like described. The frequency converters are decoupled by line reactors. Further these Drives are quite big. Please take care, that the supply transformer is strong enogh and may not come in saturation, even not e.g. one leg, due to big unbalance. If negative effects occure never the less, a second line reactor or a 4%(voltage drop) one will improve the decoupling effect. If the transformer is far to big or the devices are very closed to the supply transformer, this will be also apreventive measure. With the SIZER tool, the harmonics can be calculated: http://support.automation.siemens.com/WW/view/en/54992004 |
With best regards, |
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