Standard 1004-1, Edition 2
UL 1004-1

Standard for Rotating Electrical Machines - General Requirements

UL CSDS Proposal Edition 2 Published Date: March 25, 2016 Last Revision: November 05, 2020

Summary of Topics b1004-1_2_20160325_sum.html

Subject 1004-1

Bulletin Dated: March 25, 2016


The following changes in requirements to the Standard for Rotating Electrical Machines - General Requirements, UL 1004-1, are being proposed:

1. Addition of requirements for a generator grounding method

2. Revision to narrow the scope of UL 1004-1 to motors rated 1,000 V or less

3. Revision to temperature calculation method for high ambients

Back to Standard 1004-1, Edition 2

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