List of Contents
Engineering Information
SINAMICS Engineering Manual – November 2015
ÓSiemens AG 7/528
1.4.4 Harmonic currents of 12-pulse rectifier circuits.................................................................................79
1.4.5 Harmonic currents and harmonic voltages of Active Infeeds (AFE technology)..................................80
1.4.6 Standards and permissible harmonics.............................................................................................82
1.5 Line-side reactors and filters .......................................................................................................................86
1.5.1 Line reactors (line commutating reactors)........................................................................................86
1.5.2 Line Harmonics Filters (LHF and LHF compact)...............................................................................87
1.5.2.1 Operating principle of Line Harmonics Filters (LHF and LHF compact) .............................................87
1.5.2.2 Line Harmonics Filter (LHF) with separate housing (6SL3000-0J_ _ _-_AA0) ...................................88
1.5.2.3 Line Harmonics Filter compact (LHF compact) as Option L01 for SINAMICS G150...........................90
1.5.3 Line filters (radio frequency interference (RFI) suppression filter or EMC filter) .................................92
1.5.3.1 General information and standards..................................................................................................92
1.5.3.2 Line filters for the "first" environment (residential) and "second" environment (industrial)..........................95
1.5.3.3 Operating principle of line filters ......................................................................................................95
1.5.3.4 Magnitude of leakage or interference currents.................................................................................96
1.5.3.5 EMC-compliant installation..............................................................................................................97
1.6 SINAMICS Infeeds and their properties......................................................................................................100
1.6.1 Basic Infeed .................................................................................................................................100
1.6.2 Smart Infeed ................................................................................................................................102
1.6.3 Active Infeed ................................................................................................................................105
1.6.4 Comparison of the properties of the different SINAMICS Infeeds....................................................110
1.6.5 – – – ............................................................................................................................................112
1.6.6 Redundant line supply concepts....................................................................................................112
1.6.7 Permissible total cable length for S120 Infeed Modules feeding multi-motor drives .........................117
1.7 SINAMICS braking units (Braking Modules and braking resistors)...........................................................118
1.8 SINAMICS Inverters or Motor Modules.......................................................................................................119
1.8.1 Operating principle and properties.................................................................................................119
1.8.2 Drive configurations with multiple Motor Modules connected to a common DC busbar....................120
1.8.2.1 Connection of Motor Modules to the DC busbar, fuse protection and precharging...........................120
1.8.2.2 Arrangement of Motor Modules along the DC busbar.....................................................................122
1.8.2.3 Permissible dimensions and topologies of the DC busbar ..............................................................125
1.8.2.4 Short-circuit currents on the DC busbar.........................................................................................127
1.8.2.5 Maximum power rating of drive configurations at a common DC busbar .........................................129
1.9 Effects of using fast-switching power components (IGBTs) .....................................................................131
1.9.1 Increased current load on the inverter output as a result of long motor cables.................................131
1.9.2 Special issues relating to motor-side contactors and circuit breakers..............................................133
1.9.3 Increased voltage stress on the motor winding as a result of long motor cables ..............................134
1.9.4 Bearing currents caused by steep voltage edges on the motor.......................................................139
1.9.4.1 Measures for reducing bearing currents.........................................................................................140
1.9.4.1.1 EMC-compliant installation for optimized equipotential bonding in the drive system ........................141
1.9.4.1.2 Insulated bearing at the non-drive end (NDE) of the motor.............................................................145
1.9.4.1.3 Other measures............................................................................................................................145
1.9.4.2 Summary of bearing current types and counter-measures..............................................................146
1.10 Motor-side reactors and filters .................................................................................................................148
1.10.1 Motor reactors..............................................................................................................................148
1.10.1.1 Reduction of the voltage rate-of-rise dv/dt at the motor terminals....................................................148
1.10.1.2 Reduction of additional current peaks when long motor cables are used.........................................148
1.10.1.3 Permissible motor cable lengths with motor reactor(s) for single- and multi-motor drives.................149
1.10.1.4 Supplementary conditions which apply when motor reactors are used............................................152
1.10.2 dv/dt filters plus VPL and dv/dt filters compact plus VPL ................................................................153
