PowerFlex 755 Install Manual.pdf

Step 3 Wire the Drive
Special Considerations
!
PowerFlex 750-Series drives are suitable for use on a circuit capable of
delivering up to a maximum of 200,000 rms symmetrical amperes, 480 volts
with recommended fuses/circuit breakers.
!
ATTENTION: National Codes and standards (NEC, VDE, BSI
etc.) and local codes outline provisions for safely installing
electrical equipment. Installation must comply with specifications
regarding wire types, conductor sizes, branch circuit protection
and disconnect devices. Failure to do so may result in personal
injury and/or equipment damage.
If a Residual Current Detector (RCD) is used as a system ground fault
monitor, only Type B (adjustable) devices should be used to avoid nuisance
tripping.
Unbalanced, Ungrounded, Impedance or Phase Grounded Distribution Systems
If phase to ground voltage will exceed 125% of normal line to line voltage
or the supply system is ungrounded, refer to Wiring and Grounding
Guidelines for Pulse Width Modulated (PWM) AC Drives, publication
DRIVES-IN001.
!
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 Fusing on page 50.
ATTENTION: PowerFlex 750-Series drives contain protective
MOVs and common mode capacitors that are referenced to
ground. To guard against drive damage, these devices must be
configured according to the recommendations in Table 21 on
page 54. See pages 55…57 for jumper locations.
PowerFlex 750-Series Installation Instructions – Publication 750-IN001C-EN-P – September 2009
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