ABB MS116 Manual page 34

3.2.3.3 The following motors are excluded from IEC 60034-30-1:
−
Single-speed motors with 10 or more poles or multi-speed motors
−
Motors completely integrated into a machine (for example pumps, fans or compressors) that cannot be
tested separately from the machine
−
Brake motors, when the brake cannot be dismantled or separately fed
Figure 15: Overview of the nominal efficiency limits defined in IEC 60034-30-1. Note: you will find a detailed overview of the nominal efficiency limits defined in
3.2.3.4 Motor utilization categories use according to IEC 60947-4-1
IEC 60947-4-1 Ed.4 introduces now a new AC-3e utilization category for AC current switching and keeps the use and
definition of existing AC-3 utilization category unchanged.
Squirrel-cage motors starting, switching off motors during running, reversing
Refer to the asynchronous motor of designs N and
H according to IEC 60034-12:2016
AC-3 Making and breaking capacities unchanged
Rated making capacity: 10 x Ie AC-3
Rated breaking capacity: 8 x Ie AC-3
Table 11: These categories may be used for occasional inching (jogging) or plugging for limited time periods such as during machine set-up; during such lim-
ited time periods, the number of such operations should not exceed five per minute or more than ten in a 10-min period.
APR I L 19
MA N UA L MOTOR START ER G UI D E
IEC 60034-30-1 in the Appendix.
AC-3 AC-3e
Refer to the asynchronous motor of designs NE and
HE, according to IEC 60034-12:2016, with extended /
higher locked rotor apparent power and current than
design N and H respectively, to achieve a higher effi-
ciency class according to IEC 60034-30-1.
New AC-3e Making and breaking capacities
Rated making capacity: 13 x Ie AC-3e
Rated breaking capacity: 8.5 x Ie AC-3e
3 4/8 0