Siemens SINAMICS S220

3.3.4 Installation altitude............................................................................................................ 39
4 Application planning ........................................................................................................................... 41
4.1 Protecting persons from electromagnetic 󹪝elds................................................................... 41
4.2 Protecting against the spread of 󹪝re.................................................................................... 42
4.3 Protection against condensation and electrically conductive pollution................................. 43
4.4 Low-voltage switchgear and controlgear assemblies........................................................... 43
4.5 Operation on a TN system.................................................................................................. 43
4.6 Operation on a TT system .................................................................................................. 44
4.7 Operation on an IT system ................................................................................................. 45
4.8 Conditions for the line connection...................................................................................... 46
4.9 Power failure-bu󹪜ering concept ......................................................................................... 46
4.10 24 V DC supply voltage ...................................................................................................... 47
4.10.1 Selecting power supply ...................................................................................................... 47
4.10.2 Selecting the input voltage of a holding brake .................................................................... 48
4.10.3 Selecting power supply units.............................................................................................. 49
4.10.4 Overcurrent protection....................................................................................................... 50
4.10.5 Overvoltage protection ...................................................................................................... 51
4.10.5.1 Using overvoltage protection elements .............................................................................. 51
4.10.5.2 Connection example for overvoltage protection elements................................................... 52
4.11 Cable lengths..................................................................................................................... 54
4.11.1 Maximum permissible cable lengths................................................................................... 54
4.11.2 Con󹪝guring the Motor Modules depending on the cable length .......................................... 55
4.11.3 Maximum permissible total cable length ............................................................................ 56
4.12 Continuous current-carrying capacity and factors to reduce the current for power and
signal cables ..................................................................................................................... 57
4.12.1 Requirements for cable cross-sections ................................................................................ 57
4.12.2 Cable requirements for UL applications .............................................................................. 58
4.12.3 Continuous current-carrying capacity for power and signal cables....................................... 58
4.12.4 Continuous current-carrying capacity as a function of the ambient temperature ................. 60
4.13 Power losses ...................................................................................................................... 60
4.13.1 Power losses in rated operation.......................................................................................... 60
4.13.2 Calculating the power loss for Motor Modules in typical applications................................... 62
4.13.3 Losses in the partial load range for power units .................................................................. 63
4.13.4 Losses in the partial load range for line reactors.................................................................. 64
4.14 Electromagnetic compatibility (EMC).................................................................................. 65
4.14.1 Interference caused by electromagnetic 󹪝elds (EMF)........................................................... 65
4.14.2 Electromagnetic compatibility (EMC).................................................................................. 65
4.14.3 EMC environments in residential and industrial areas.......................................................... 66
4.14.4 EMC category .................................................................................................................... 66
4.14.5 EMC in the 2nd environment (industrial areas) ................................................................... 67
4.14.5.1 The converter in the 2nd environment ............................................................................... 67
4.14.5.2 Complying with Category C2 interference emission ............................................................ 67
4.14.5.3 Complying with Category C3 interference emission ............................................................ 68
4.14.5.4 Limit values for current harmonics ..................................................................................... 68
4.14.6 EMC requirements for South Korea..................................................................................... 68
Table of contents
Booksize power units
4 Equipment Manual, 09/2023, A5E53307519B AA