Rockwell Automation 1329R Std. Industrial AC Induction Motors - Manual (Page 13)

Standard Industrial AC Induction Motors 13
Motors with maximum surface temperatures listed on the nameplates.
!
ATTENTION: The motor is designed to operate at or
below the maximum surface temperature stated on the
nameplate. Failure to operate the motor properly can cause
this maximum surface temperature to be exceeded. If
applied in a Division 2 or Zone 2 environment, this
excessive temperature may cause ignition of hazardous
materials. Operating the motor under any of the following
conditions can cause the marked temperature to be
exceeded.
• Motor load exceeding service factor value.
• Ambient temperatures above nameplate value.
• Voltages above or below nameplate value.
• Unbalanced voltages.
• Loss of proper ventilation.
• Variable frequency operation.
• Altitude above 1000 meters (3000 feet).
• Severe duty cycles, repeated starts.
• Motor stall.
• Motor reversing.
• Single-phase operation.