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Entry type: Application example Entry ID: 34189181, Entry date: 09/05/2012
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SINAMICS G: Information on the standby current of the SINAMICS G120

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Task
In many applications, it is necessary to supply several frequency inverters from one infeed unit. The disadvantage of this type of power supply is the fact that the load as well as the no-load (standby) currents are summed - and both the infeed and power supply cables must be appropriately dimensioned.
An electric monorail (EMS) is a typical example of such a drive configuration. In the automobile industry, the EMS is an indispensable transport medium to ensure both flexible and rational material flow.

Solution
The behavior of the PM250 / PM250D Power Modules regarding the power and current drawn from the line supply is explained in the description. Using examples, it is shown how the current (apparent current) that the frequency inverter draws from the line supply can be calculated; for instance, when selecting the correct cross-section of power supply cables.

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Documentation 34189181_Standby_currents_G120D_en.pdf ( 292 KB )
Excel-Tool G120D_standby_current_calculator_V2.zip ( 199 KB )

 

Additional Information

Title

Link

FAQ: SINAMICS G120D: Cascading the 24 Volt power supply of the CU240D Entry-ID: 26986267
FAQ: Where do I find information regarding the standby current of my SINAMICS G120D? Entry-ID: 31764702

Last Changes
Excel Tool replaced

 

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