Siemens SINAMICS S120 Engineering Manual
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Siemens SINAMICS S120 Engineering Manual

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SINAMICS S120
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Engineering Manual
SINAMICS S120 Booksize
https://support.industry.siemens.com/cs/ww/en/view/109808992
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Summary of Contents for Siemens SINAMICS S120

  • Page 1 SINAMICS S120 Booksize Engineering Manual Siemens SINAMICS S120 Booksize Industry Online https://support.industry.siemens.com/cs/ww/en/view/109808992 Support...

  • Page 2: Legal Information

    The foregoing provisions do not imply any change in the burden of proof to your detriment. You shall indemnify Siemens against existing or future claims of third parties in this connection except where Siemens is mandatorily liable.

  • Page 3: Table Of Contents

    Table of contents Table of contents Legal information ......................2 Engineering SINAMICS S120 Booksize ............4 Line connection variants............... 4 1.1.1 Options when connecting the line supply for Booksize Line Modules ....................4 Operating Booksize Line Modules directly on the line supply ....5 Operation on a transformer ..............

  • Page 4: Engineering Sinamics S120 Booksize

    1 Engineering SINAMICS S120 Booksize Engineering SINAMICS S120 Booksize Line connection variants 1.1.1 Options when connecting the line supply for Booksize Line Modules A distinction is made between the following line connection versions: • Line Modules are directly connected to the line supply •...

  • Page 5: Operating Booksize Line Modules Directly On The Line Supply

    1 Engineering SINAMICS S120 Booksize Operating Booksize Line Modules directly on the line supply The SINAMICS S Booksize converter system is rated for direct operation on TN, TT and IT line systems with rated voltages of 3 AC 380 V to 3 AC 480 V ±10% (- 15% <...

  • Page 6: Operation On A Transformer

    1 Engineering SINAMICS S120 Booksize Operation on a transformer 1.3.1 Safety information Electric shock or fire due to overcurrent protective devices that trip too late or not at all Overcurrent protective devices that trip too late or not all can cause electric shock or fire.

  • Page 7: Line Supply Connection Conditions For Booksize Line Modules

    1 Engineering SINAMICS S120 Booksize 1.3.2 Line supply connection conditions for Booksize Line Modules 1.3.2.1 Transformer design for connecting Booksize Line Modules to the line supply A transformer should be used for connecting Booksize Line Modules to the line supply. The following diagram shows connecting a Booksize Active Line Module to an isolation transformer as example: Fig.

  • Page 8: Definition Of Terminology

    1 Engineering SINAMICS S120 Booksize Definition of terminology PCC "Point of Common Coupling" is the point where the customer's line supply is connected with the power grid. Typically, this is the power utility transfer point, and can be on the medium-voltage or low-voltage side.

  • Page 9: Minimum Rated Power Of The Matching Transformer

    Minimum relative short-circuit power RSC as a function of the Line Module Depending on the specific SINAMICS S120 Line Module Booksize being used, the following minimum relative line short-circuit power levels must be maintained: Table 1-1...

  • Page 10: Notes On Calculation Variants

    1 Engineering SINAMICS S120 Booksize 1.3.3 Notes on calculation variants Two calculation examples are shown below. One is used to dimension a matching transformer, the other to check an existing line connection with transformer. For a more precise calculation, data on cable lengths and cross-sections along with the short-circuit power at the PCC (Point of Common Coupling) are required.

  • Page 11: Dimensioning A Matching Transformer

    © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize 1.3.4 Dimensioning a matching transformer 1.3.4.1 Overview of a typical line supply topology Fig. 1-6 Medium-voltage Line transformer Low-voltage line Matching Converter Medium-voltage Converter line power grid supply...
  • Page 12 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize Medium-voltage line supply: – Inductance value per unit length of the medium-voltage cable according to data sheet information µ�� 1.0500 MV line �� – Length of the medium-voltage cable...
  • Page 13 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize Line transformer – Relative short-circuit voltage of the line transformer k_line transformer – Rated apparent power of the line transformer 1.6000 line transformer Fig. 1-7 Example of a transformer rating plate...
  • Page 14 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize Low-voltage line supply: Voltage of the low-voltage line supply LV line – Inductance value per unit length of the low-voltage cable according to data sheet information µ�� 0.2550 LV line ��...
  • Page 15 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize Line supply for the converter: Voltage of the converter line supply FC line – Inductance value per unit length of the converter connecting cable according to data sheet information µ��...
  • Page 16 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize 1.3.4.3 Calculations Supporting calculations The rated apparent power of the Line Module is: �� = �� ∙ �� ∙ √ 3 133.02 ���������� �������� ������������ ���������� ������������������ �������� ������������...
  • Page 17 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize Calculating the relative impedances using the %/MVA technique Impedance of the medium-voltage power grid �� 2.200 �������� ������������ ��′′ ������ �� �������� ������������ Impedance of the medium-voltage cable √��...
  • Page 18 DIN EN 60076-5 lists recognized minimum values according to power classes. In the typical power range for matching transformers from 25 to 630 kVA for SINAMICS S120 Booksize, the minimum value is 4%. Up to power ratings of 2500 kVA, this value increases up to 6%. This is the Note reason that here it is recommended to specify typical values from 4% to 6%.
  • Page 19 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize In the next step, you can define the selected apparent power of the transformer in order to determine the resulting RSC. �� 480.0000 ��������ℎ������ ����������������������_������������������ its impedance together with the selected u is obtained as: ��...

  • Page 20: Checking The Relative Line Short-Circuit Power Rsc Of An Existing Line Connection

    © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize 1.3.5 Checking the relative line short-circuit power RSC of an existing line connection 1.3.5.1 Overview of a typical line supply topology Fig. 1-8 Medium-voltage Line transformer Low-voltage line...
  • Page 21 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize Medium-voltage line supply: – Inductance value per unit length of the medium-voltage cable according to data sheet information µ�� 1.0500 MV line �� – Length of the medium-voltage cable...
  • Page 22 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize Line transformer – Relative short-circuit voltage of the line transformer k_line transformer – Rated apparent power of the line transformer 1000.0000 line transformer Fig. 1-9 Example of a transformer rating plate...
  • Page 23 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize Low-voltage line supply: Voltage of the low-voltage line supply LV line – Inductance value per unit length of the low-voltage cable according to data sheet information µ�� 0.2550 LV line ��...
  • Page 24 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize Converter connection at the low-voltage line supply: – Inductance value per unit length of the converter connecting cable according to data sheet information µ�� 0.2550 FC line ��...
  • Page 25 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize 1.3.5.3 Calculations Supporting calculations The rated apparent power of the Line Module is: �� = �� ∙ �� ∙ √ 3 133.02 ���������� �������� ������������ ���������� ������������������ �������� ������������...
  • Page 26 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize Calculating the relative impedances using the %/MVA technique Impedance of the medium-voltage power grid �� 5.500 �������� ������������ ��′′ ������ �� �������� ������������ Impedance of the medium-voltage cable √��...
  • Page 27 © Siemens AG 2022 All rights reserved 1 Engineering SINAMICS S120 Booksize Calculating the relative line short-circuit power RSC at the converter connection point The short-circuit power at the connection point IPC is: ��′′ 7.603 ��_������ �� +�� +�� +��...

  • Page 28: Examples And Tips

    Additional possibilities for making an estimate exist: 1. The line short-circuit power is not known. In the power range of SINAMICS S120 Line Modules Booksize, in European line supplies/grids, the line short-circuit power is typically very high when compared to the apparent power of the Line Module;...

  • Page 29: Operation On A Generator

    2 Examples and tips Operation on a generator How can I estimate the relative line short-circuit power when directly operated on a generator? As the ohmic resistance of the generator when compared to the inductive resistance is very low, it can be neglected for the calculation. As a consequence, the calculation is only made with the relative subtransient reactance of the generator ��′′...

  • Page 30: Appendix

    Frauenauracher Str. 80 91056 Erlangen, Germany mailto: tech.team.motioncontrol@siemens.com Links and references Table 3-1 Subject Siemens Industry Online Support https://support.industry.siemens.com Link to the entry page of the application example https://support.industry.siemens.com/cs/ww/en/view/109808992 Configuration Manual SINAMICS G130, G150, S120 Chassis, S120 Cabinet Modules, S150 https://support.industry.siemens.com/cs/ww/en/view/83180185...

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