Publication 2098-IN003E-EN-P — April 2004
3-8 Connecting Your Ultra3000
If a three-phase line filter is used to feed multiple single-phase drives
(not recommended), it is important that the filter include a neutral
connection as shown in Figure 3.8. This applies if three-phase is
brought directly into the filter (i.e., no isolating transformer present).
Figure 3.8
Single-Phase Amplifiers (One EMC Filter/Multiple Drives)
Note: Feeder and branch short circuit protection is not illustrated.
Voiding of CE Compliance
The three-phase and neutral in-line filter applications described above
may not be adequate from an EMC aspect for CE compliance.
Therefore, EMC validity and CE marking by Rockwell Automation is
voided when three-phase and neutral in line filters are used.
L1
L2
L3
L1
TB1
L1
L2/N
TB1
L1
L2/N
TB1
L1
L2/N
L2
L3
NN
E
L1
L2
L3
Bonded Cabinet
Ground Bus
Transformer (WYE) Secondary
Ground Grid or
Power Distribution Ground
AC Line
Filter
Ground Grid or
Power Distribution Ground
Ultra3000 (System A)
Single-Phase AC Input
TB1 Terminals
Ultra3000 (System B)
Single-Phase AC Input
TB1 Terminals
Ultra3000 (System C)
Single-Phase AC Input
TB1 Terminals
Grounded Neutral
Grounded Neutral
ATTENTION
!
The three-phase isolation transformer and neutral
in-line filter applications described in this document
have not been tested for EMC by Rockwell
Automation, and products used in such installations
are not considered CE marked by Rockwell
Automation.
If this three-phase isolation transformer and neutral
in-line filter application is used, the responsibility for
EMC validation lies with the user and CE marking of
the system becomes the user's responsibility.
If CE compliance is a customer requirement,
single-phase line filters which have been tested by
Rockwell and specified for the product should be
used. Refer to AC Line Filters on page C-3 for catalog
numbers.
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