Ul Marking - ABB ACS355 series User Manual

Note: It is not allowed to install a drive with the internal EMC filter connected on IT
(ungrounded) systems. The supply network becomes connected to ground potential
through the EMC filter capacitors which may cause danger or damage the drive.
Note: It is not allowed to install a drive with the internal EMC filter connected on a
corner-grounded TN system as this would damage the drive.

UL marking

See the type designation label for the valid markings of your drive.
The UL mark is attached to the drive to verify that it meets UL requirements.

UL checklist
Input power connection – See section
385.
Disconnecting device (disconnecting means) – See
disconnecting device (disconnecting means)
Ambient conditions – The drives are to be used in a heated indoor controlled
environment. See section
Input cable fuses – For installation in the United States, branch circuit protection
must be provided in accordance with the National Electrical Code (NEC) and any
applicable local codes. To fulfil this requirement, use the UL classified fuses given in
section Power cable sizes and fuses
For installation in Canada, branch circuit protection must be provided in accordance
with Canadian Electrical Code and any applicable provincial codes. To fulfil this
requirement, use the UL classified fuses given in section
fuses on page 377.
Power cable selection – See section
Power cable connections – For the connection diagram and tightening torques, see
section Connecting the power cables
Overload protection – The drive provides overload protection in accordance with
the National Electrical Code (US).
Braking – The drive has an internal brake chopper. When applied with appropriately
sized brake resistors, the brake chopper will allow the drive to dissipate regenerative
energy (normally associated with quickly decelerating a motor). Brake resistor
selection is discussed in
Electric power network specification
Ambient conditions
on page 377.
Selecting the power cables
on page 51.
Appendix: Resistor braking
Selecting the supply
on page 40.
on page 389 for specific limits.
Power cable sizes and
on page 405.
Technical data 393
on page
on page 41.