Rockwell Automation 20D PowerFlex 700H and 700S Frame 9...14 Drives - Manual (Page 20)

20 Rockwell Automation Publication PFLEX-IN006E-EN-P - July 2013
Chapter 1 General Installation Information
Single-Phase Input Power
The PowerFlex 700H and 700S drives are typically used with a three-phase input
supply. The drives have been listed by UL to operate on single-phase input power
with the requirement that the output current is derated by 80% of the three-phase
ratings identified in
Table 1 on page 167 through Table 8 on page 174 .
Input Power Conditioning
All AC input drives include an internal line reactor.
Certain events on the power system supplying a drive can cause component
damage or shortened product life. These conditions 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.
If any or all of these conditions exist, it is recommended that the user install a
minimum amount of impedance between the drive and the source. This
impedance could come from the supply transformer itself, the cable between the
transformer and drive or an additional transformer or reactor. The impedance
can be calculated using the information supplied in the Wiring and Grounding
Guidelines for Pulse Width Modulated (PWM) AC Drives
, publication
DRIVES-IN001 .
Output Power Conditioning
Frame 14 drives can be ordered with or without output reactors (du/dt filters).
The du/dt filter limits the rate of change of output voltage and the rate of change
in the IGBT or output transistor switching event.
See the Wiring and Grounding Guidelines for Pulse Width Modulated (PWM)
AC Drives
, publication DRIVES-IN001 , for minimum inductance on
installations where du/dt filters are not installed.