Rockwell Automation 20M LPM15 Liquid-Cooled Adjustable Frequency AC Drive FRN 2.xxx - Manual (Page 24)

1-12 Installation/Wiring
AC Supply Source
Considerations LPM15 drives are suitable for use on a circuit capable of delivering up to a
maximum of 85,000 rms symmetrical amperes, and a maximum of 480
volts. A circuit breaker with the appropriate KAIC rating needs to be used
upstream of the drive.
Unbalanced or Ungrounded Distribution Systems
LPM15 drives should not be used with a supply system that is ungrounded
and when the phase-to-phase voltage exceeds 125% of normal line-to-line
voltage.
Input Power Conditioning
Certain events on the power system supplying a drive can cause component
damage or shortened product life. They are:
• 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.
Wiring Requirements for the Drive
Certain drive requirements should be checked before continuing with the
drive installation. Wire sizes, branch circuit protection, and E-stop wiring
are all areas that need to be evaluated.
!
ATTENTION: To guard against personal injury and/or
equipment damage caused by improper fusing or circuit breaker
selection, use only the recommended line fuses/circuit breakers
specified in
Table 1.C .
!
ATTENTION: LPM15 drives contain protective MOVs on the
drive’s printed circuit boards. The MOVs are referenced to
ground. The MOVs cannot be disconnected. The LPM15 drives
do not contain common mode capacitors.