Operating temperatures, Ac supply source considerations, Unbalanced or ungrounded distribution systems – Rockwell Automation 20D PowerFlex 700S Drive Ph I Control, Frames 1...11 User Manual
Page 17: Operating temperatures -3, Ac supply source considerations -3, Unbalanced or ungrounded distribution systems -3

Installation/Wiring
1-3
Operating Temperatures
PowerFlex 700S drives are designed to operate in surrounding air
temperature of 0
° to 40° C. To operate the drive in installations with
surrounding air temperature between 41
° and 50° C, remove the adhesive
label affixed to the top of the drive enclosure.
Table 1.A Acceptable Surrounding Air Temperature & Required Actions
Important: Removing the adhesive label from the drive changes the NEMA
enclosure rating from Type 1 to Open type.
AC Supply Source
Considerations
PowerFlex drives are suitable for use on a circuit capable of delivering up to
a maximum of 200,000 rms symmetrical amperes, 600 volts with
recommended fuses/circuit breakers. Refer to the PowerFlex Reference
Manual Vol. 2 for actual interrupt ratings based on circuit breaker or fuse
choice.
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 or Ungrounded Distribution Systems
If phase to ground voltage will exceed 125% of normal or the supply system
is ungrounded, refer to the Wiring and Grounding Guidelines for PWM
Drives for more information.
Drive Catalog Number
Required Action . . .
IP 20, NEMA
Type 1
IP 20, NEMA Type
Open
IP 00, NEMA
Type Open
No Action Required
Remove Top Label Remove Top Label &
Vent Plate
(1)
(1)
To remove vent plate (see
for location), lift top edge of plate from the chassis. Rotate the plate out
from the back plate.
All Except 20BC072
40
° C
50
° C
NA
20BC072
40
° C
45
° C
50
° C
!
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
!
ATTENTION: PowerFlex 700S drives contain protective MOVs
and common mode capacitors that are referenced to ground.
These devices should be disconnected if the drive is installed on
an ungrounded distribution system. See page
jumper locations.