58 Rockwell Automation Publication 2071-UM001E-EN-P - November 2013
Chapter 4 Connect the Kinetix 3 Drive
Three-phase Power Wired to Single-phase Drives
This example illustrates grounded three-phase power wired to single-phase
Kinetix 3 drives when phase-to-phase voltage is within drive specifications. The
optional grounded neutral is omitted on ungrounded systems.
Figure 27 - Single-phase Amplifiers on Three-phase Power (WYE)
(1) AC line filter is optional, but is required for CE compliance.
Feeder short circuit protection is not illustrated.
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 above. This applies if three-phase is brought directly into the filter and no
isolating transformer is present.
L1
L2
L3
L1
L2
L3
L2
L3
L1
L1
L2
L1
L2
E
L1
L2
L1
L2
E
L1
L2
L1
L2
E
IPD
L1
L2
L3
LC1
LC2
IPD
L1
L2
L3
LC1
LC2
IPD
L1
L2
L3
LC1
LC2
Bonded Cabinet Ground
Bus
Tran sf or me r
(WYE) Secondary
Grounded Neutral
(optional)
Ground Grid or
Power Distribution Ground
Bonded Cabinet Ground
Bus
Ground Grid or
Power Distribution Ground
AC Line
Filter
(1)
Kinetix 3 Drive
(System A)
Single-phase AC Input
IDP Terminals
Kinetix 3 Drive
(System B)
Single-phase AC Input
IDP Terminals
Kinetix 3 Drive
(System C)
Single-phase AC Input
IDP Terminals
AC Line
Filter
(1)
AC Line
Filter
(1)
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