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Appendix D—Safety instructions for UL and cUL
POWERXL SERIES VFDS
MN040060EN—September 2020 www.eaton.com
Appendix D—Safety instructions for UL
and cUL
CAUTION
The UL and cUL compliance can be maintained only if
this drive is installed according to the requirements of
Appendix D —Safety Instructions for UL and cUL. Failure
to follow these instructions may result in UL and cUL
non-compliance.
UL Standards compliance
This drive is tested in accordance with UL61800-5-1 and
CSA C22.2 No. 274-17 and is found to comply with these
requirements. To ensure continued compliance when
using this drive or when using it in combination with other
equipment, meet the following conditions.
General
This drive shall be applied in accordance with the
specifications detailed in
Appendix A
.
Overvoltage category
To comply with standard CSA C22.2 No. 274-17 requirement,
the following applies to cUL applications:
•
This drive should be installed in environment of
Overvoltage Category III.
•
For 400 V series
: It is recommended that transient
surge suppression be installed on the line side of this
equipment and be rated 480 V (phase to ground), suitable
for Overvoltage Category III, and shall provide protection
for a rated impulse withstand voltage peak of 6 kV.
•
For 230 V series
: It is recommended that transient
surge suppression be installed on the line side of this
equipment and be rated 240 V (phase to ground), suitable
for Overvoltage Category III, and provide protection for a
rated impulse withstand voltage peak of 4 kV.
•
For 575 V series:
It is recommended that transient surge
suppression be installed on the line side of this equipment
and be rated 600 V (phase to ground), suitable for
Overvoltage Category III, and shall provide protection for a
rated impulse withstand voltage peak of 6 kV.
Motor overload and over-temperature protection
This drive provides solid-state motor overload protection.
The solid-state motor overload protection limit is adjustable,
see the drives application manual for more details.
Branch circuit short circuit protection
Integral solid-state short circuit protection does not provide
branch circuit protection. Branch circuit protection must be
provided in accordance with the National Electrical Code and
any additional local codes.
230 V drive series are suitable for use on a circuit capable of
delivering not more than:
•
100 kA, 240 Vac, when protected by any UL listed Class J,
T, CF, or CC fuses;
•
100 kA, 240 Vac, when protected by any UL listed Inverse-
time molded-case circuit breakers (only for open type);
•
65 kA, 240 Vac, when protected by any UL listed Type E
combination motor controllers;
•
14/10 kA, 240 Vac, when protected by any UL listed
miniature molded-case circuit breakers.
400 V drive series are suitable for use on a circuit capable of
delivering not more than:
•
100 kA, 480 Vac, when protected by any UL listed Class J,
T, CF, or CC fuses;
•
100 kA, 480 Vac, when protected by any UL listed Inverse-
time molded-case circuit breakers (only for open type);
•
65 kA, 480Y/277 Vac, when protected by any UL listed
Type E combination motor controllers;
•
14/10 kA, 480Y/277 Vac, when protected by any UL listed
miniature molded-case circuit breakers.
Refer to Table 28 for recommended branch circuit protection
devices ratings.
