Rockwell Automation 20G PowerFlex 755 IP00 NEMA/UL Open Drive - Frames 8-10 User Manual
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Rockwell Automation Publication 750-IN020C-EN-P - May 2012
PowerFlex 755 IP00, NEMA/UL Open Type Drive
•
PowerFlex 750-Series drives generate harmonic current emissions on the
AC supply system. When operated on a public low-voltage network it is
the responsibility of the installer or user to ensure that applicable
requirements of the distribution network operator have been met.
Consultation with the network operator and Rockwell Automation may
be necessary.
Installation Requirements Related to EN 61800-5-1 and the Low Voltage Directive
•
Voltage classes up to 690V PowerFlex 750-Series drives are compliant with
the CE LV Directive when used on a “corner-earthed” supply system as
well as all other common supply systems for altitudes up to and including
2000 m (6562 ft.).
•
When used at altitudes above 2000 m (6562 ft) up to a maximum of
4800 m (15,748 ft), PowerFlex 750-Series drives of voltage classes up to
480V may not be powered from a “corner-earthed” supply system in order
to maintain compliance with the CE LV Directive. Altitude derating
curves are provided in the PowerFlex 750-Series AC Drives Technical
Data, publication 750-TD001.
•
NEMA/UL Open Type drives must be installed in a supplementary
enclosure to be CE compliant with respect to protection against electrical
shock.
•
PowerFlex 750-Series drives produce leakage current in the protective
earthing conductor which exceeds 3.5 mA AC and/or 10 mA DC. The
minimum size of the protective earthing (grounding) conductor used in
the application must comply with local safety regulations for high
protective earthing conductor current equipment.
Installation Requirements Related to EN 61800-3 and the EMC Directive
•
The drive must be earthed (grounded) as described on
.
•
Output power wiring to the motor must employ cable with a braided
shield providing 75% or greater coverage, or the cables must be housed in
metal conduit, or equivalent shielding must be provided. Continuous
shielding must be provided from the drive enclosure to the motor
enclosure. Both ends of the motor cable shield (or conduit) must terminate
with a low-impedance connection to earth.
•
At the drive end of the motor cable, terminate the shield at the PE
Grounding Bar.
•
At the motor end, the motor cable shield or conduit must terminate in a
shielded connector which must be properly installed in an earthed motor
wiring box attached to the motor. The motor wiring box cover must be
installed and earthed.
ATTENTION: PowerFlex 750-Series drives produce DC current in the
protective earthing conductor which may reduce the ability of RCD’s
(residual current-operated protective devices) or RCM’s (residual
current-operated monitoring devices) of type A or AC to provide
protection for other equipment in the installation.