UL 1004-6 PDF

1 Scope

1.1 This Standard is intended to be read together with the Standard for Rotating Electrical Machines – General Requirements, UL 1004-1. The requirements in this Standard supplement or amend the requirements in UL 1004-1. The requirements of UL 1004-1 apply unless modified by this Standard.

1.2 This Standard applies to servo and stepper motors. The requirements in this Standard are intended to evaluate the suitability of the motor for normal use when fed from an appropriate controller (drive) through its manufacturer declared normal operating region.

1.3 This Standard does not address:

1. a) The efficacy of motor overtemperature protection under normal or abnormal conditions; nor

2. b) The operation of a motor in hazardous (Classified) locations.

Summary of Topics

This revision of ANSI/UL 1004-6 dated March 17, 2022 is being issued to update the title page to reflect the most recent designation as a Reaffirmed American National Standard (ANS). No technical changes have been made.