connected to ground potential through the internal EMC filter capacitors, which
can cause danger or damage to the drive.
WARNING!
To prevent radio-frequency interference, do not use a category C4 drive on a
low-voltage public network that supplies domestic premises.
UL and CSA checklist
WARNING!
Operation of this drive requires detailed installation and operation instructions
provided in the hardware and software manuals. The manuals are provided in
electronic format in the drive package or on the Internet. Keep the manuals with
the drive at all times. Hard copies of the manuals can be ordered through the
manufacturer.
• Make sure that the drive type designation label includes the cULus Listed and/or CSA
marking.
• CAUTION - Risk of electric shock. After disconnecting the input power, always wait
for 5 minutes to let the intermediate circuit capacitors discharge before you start working
on the drive, motor or motor cable. Do the steps in section Electrical safety
precautions (page 14).
• Use the drive in a heated, indoor controlled environment. The drive must be installed
in clean air according to the enclosure classification. Cooling air must be clean, free
from corrosive materials and electrically conductive dust.
• Use the drive in Pollution degree 2 environment only.
• The maximum surrounding air temperature is 50 °C (122 °F) at rated output current.
The output current must be derated between 50…60 °C (122…140 °F).
• The drive is suitable for use in a circuit capable of delivering not more than 100000 rms
symmetrical amperes, 480 V maximum (480 V drive types), or 240 V maximum (240 V
drive types), when protected by the UL fuses specified by ABB. The current rating is
based on tests done according to the applicable UL standard. See T fuses
(UL(NEC)) (page 103).
• The drive is suitable for use on a circuit capable of delivering not more than 65000 rms
symmetrical amperes, 480Y/277 V maximum (480 V drive types), when protected by
Type E combination motor controller specified by ABB. See Manual self-protected
combination motor controller – Type E USA (UL (NEC)) (page 105).
• The cables located within the motor circuit must be copper cables rated for at least
75 °C (167 °F).
• The input cable must be protected with UL-rated fuses, or the ABB Type E combination
motor controllers listed in this manual. The fuses, or the combination motor controllers,
provide branch circuit protection in accordance with the National Electrical Code (NEC)
and Canadian Electrical Code. For installation in the United States, also obey any other
applicable local codes. For installation in Canada, also obey any applicable provincial
codes.
Note: Circuit breakers must not be used without fuses in the USA. Contact your local
representative for suitable circuit breakers.
• The opening of the branch-circuit protective device can be an indication that a fault
current has been interrupted. To reduce the risk of fire or electric shock, current-carrying
120 Technical data
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