Rockwell Automation 20L PowerFlex 700L Frame 1X Liquid-Cooled Adjustable Frequency AC Drive - Manual (Page 16)

PowerFlex 700L Frame 1X Drive Installation Instructions – Publication 20L-IN013A-EN-P – June 2009
16
Grounding Guidelines for PWM AC Drives (publication DRIVES-IN001)
for more information on impedance grounded and ungrounded systems.
AC Line Reactor
There is no DC link reactor or AC input reactor built into the drive.
Therefore, a 3% three-phase line reactor must be installed at the AC input
terminals of the drive.
Recommended Reactors
Input Power Conditioning
Certain events on the power system supplying a drive can cause component
damage or shortened product life. These conditions include:
• The power system has power factor correction capacitors switched in and
out of the system, either by the user or by the power company.
• The power source has intermittent voltage spikes in excess of 6000 volts.
These spikes could be caused by other equipment on the line or by events
such as lightning strikes.
• The power source has frequent interruptions.
Cable Trays and Conduit
If cable trays or large conduits are to be used, refer to the guidelines
presented in the Wiring and Grounding Guidelines for PWM AC Drives
(publication DRIVES-IN001).
Motor Cable Lengths
Typically, motor lead lengths less than 91 meters (300 feet) are acceptable.
However, if your application requires longer lengths, refer to the Wiring and
Grounding Guidelines for PWM AC Drives, publication DRIVES-IN001.
!
ATTENTION: The PowerFlex 700L Frame 1X drive contains
protective MOVs and common mode capacitors that are
referenced to ground. To guard against drive damage, these
devices must be disconnected if the drive is installed on an
ungrounded, impedance or phase-grounded distribution system.
See
Table 7 on page 22 for recommended jumper configurations.
Enclosure Type Catalog Number
IP00 (Open Type) 1321-3R200-B
IP11 (NEMA/UL Type 1) 1321-3RA200-B
!
ATTENTION: To avoid a possible shock hazard caused by
induced voltages, unused wires in the conduit must be grounded
at both ends. For the same reason, if a drive sharing a conduit is
being serviced or installed, all drives using this conduit should be
disabled. This will help minimize the possible shock hazard from
“cross coupled” motor leads.