Ce conformity, Low voltage directive (73/23/eec), Emc directive (89/336/eec) – Rockwell Automation 20G PowerFlex SCR Bus Supply User Manual
Page 33: Harmonic emissions, General notes, Ce conformity -19
Installation/Wiring
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PowerFlex SCR Bus Supply User Manual
CE Conformity
Conformity with the Low Voltage (LV) Directive and Electromagnetic
Compatibility (EMC) Directive has been demonstrated using harmonized
European Norm (EN) standards published in the Official Journal of the
European Communities. The PowerFlex SCR Bus Supply complies with the
EN standards listed below when installed according to the User Manual.
CE Declarations of Conformity are available online at:
Low Voltage Directive (73/23/EEC)
• EN50178 Electronic equipment for use in power installations
EMC Directive (89/336/EEC)
• EN61800-3 Adjustable speed electrical power drive systems Part 3:
EMC product standard including specific test methods.
Harmonic Emissions
Electronic converters such as the Bus Supply can cause conducted low
frequency disturbances (harmonic emissions) to the supply network. The
mandatory three-phase AC line reactors will substantially reduce harmonic
currents produced by the Bus Supply. However, the magnitude of the
harmonic currents and resulting harmonic voltages depends upon the
network impedance at the point where the unit is connected to the network.
Currently there are no mandatory harmonic emission limits related to CE
compliance for equipment connected to private power networks. Upon
request, Rockwell Automation can provide information regarding harmonic
emissions from the SCR Bus Supply.
General Notes
• The DC bus cable to the inverter(s) should be kept as short as possible to
avoid electromagnetic emission and capacitive currents. Therefore the
inverter(s) should be located in the same cabinet as the Bus Supply or
next to the cabinet with the Bus Supply. If the connection leads between
DC bus and inverter(s) are leaving the cabinet, shielded cables must be
used.
• Use of line filters in non-solid grounded systems is not recommended.
• The PowerFlex SCR Bus Supply with external Line Reactor and HF
filter satisfies CE EMC emission limits for the industrial environment. If
used in a residential or domestic environment it
may cause radio
interference. The user is required to take measures to prevent
interference, in addition to the essential requirements for CE compliance
listed below, if necessary.