Radio Interference Suppression Filter - Eaton PowerXL DA1 Series Installation Manual

2.5 Radio interference suppression filter

DA1-12...FB-..., DA1-32...FB-..., and DA1-34...FB-... variable frequency
drives feature an internal radio interference suppression filter.
Combined with a 360 degrees shielded motor conductor grounded on both
sides, this ensures compliance with the EMC limit value in Category C1,
First Environment (IEC/EN61800-3). This requires installation in accordance
with EMC requirements, as well as not exceeding permissible motor cable
lengths.
The standard motor cable lengths are as follows:
• 1 m in Category C1 in First Environment
• 5 m in Category C2 in First and Second Environment
• 25 m in Category C3 in Second Environment
Longer motor cable lengths can be used if additional, external radio
interference suppression filters (DX-EMC...) are used.
For more information, please refer to the following tables.
Additional measures used to reduce EMC limits and use longer motor cable
lengths are possible in combination with motor chokes and sine wave filters.
DA1-35...NB-... devices do not feature an internal radio interference
suppression filter. DX-EMC34... radio interference suppression filters can be
connected upstream in order to run these devices on a three-phase mains
voltage of 500 V.
Please enquire for radio interference suppression filters for higher mains
voltages.
￫
In the case of power drive systems (PDS) with variable
frequency drives, electromagnetic compatibility (EMC)
measures must already be taken into account during the
engineering stage, as making changes during assembly and
installation and retroactively fixing things will be more
expensive.
￫
The maximum unscreened cable length between the radio
interference suppression filter and the variable frequency drive
should not exceed 300 to 500 mm (depending on the DA1
variable frequency drive's frame size).
￫
For the rated radio interference suppression filters for DA1
variable frequency drives, please refer to the technical data
chapter in￫ section 6.8, "Radio interference suppression
filter", page 177.
DA1 Variable Frequency Drives 08/18 MN04020005Z-EN www.eaton.com
2.5 Radio interference suppression filter
2 Engineering
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