Standards & Publications

Browse & Buy UL Standards
Standard 1004-2, Edition 2

Standard for Impedance Protected Motors

UL Bulletin
Standard 1004-2, Edition 2 Edition Date: May 16, 2014 $203.00-$254.00
Summary of Topics m1004-1_2_20140516_sum.html

Subject 1004-1 (1004-2, 1004-3, 1004-4, 1004-5, 1004-6, 1004-7, 1004-8, 2788)

Bulletin Dated: May 16, 2014


The following topics were discussed at the meeting of the Standards Technical Panel for Motors, STP 1004-1:

1. Remove the cheesecloth requirement from the locked-rotor temperature and endurance tests - UL 1004-2 and UL 1004-3

2. Remove requirement for abnormal switch requirements for electronically protected motors - UL 1004-7

3. Revised running heating test for direct drive fan air-over motors - UL 1004-1 and UL 1004-3

4. Revised temperature test method to include SF - UL 1004-1

5. Discussion of splice requirements - UL 1004-3

6. Discussion of temperature test stabilization requirement - UL 1004-1 and UL 1004-3

7. Discussion of making endurance test optional depending on end-use application - UL 1004-3

8. Revisions to direct-support material properties for universal motors - UL 1004-1

9. Discussion of expanded voltage limit beyond 7200V (probably 13.4kV or 13.8kV) - UL 1004-1

10. Reference to "Software Class" in Table 6.1 - UL 1004-7

11. Global Harmonization

Back to Standard 1004-2, Edition 2

The cost to purchase this Standard varies depending on whether you are ordering a hardcopy, PDF or combination of the two. We also offer two different types of subscriptions: a one year and a three year.

You will be able to choose your purchase options on the following pages.


You have one or more subscriptions that will expire soon.


You have one or more licenses to assign


Additional information required

To serve you better, please update your account details.

Featured Standards

Recently Published

Coming Soon

UL 48
Electrical Signs
Revision Pages

UL 101
Leakage Current for Utilization Equipment
Revision Pages

UL 260
Dry Pipe and Deluge Valves for Fire-Protection Service
Revision Pages

UL 310
Electrical Quick-Connect Terminals
Revision Pages

UL 343
Pumps for Oil-Burning Appliances
Revision Pages

UL 498
Attachment Plugs and Receptacles
Revision Pages

ULC 704.1
Thermal Insulation, Polyurethane and Polyisocyanurate, Boards, Faced
Revision Pages

UL 726
Oil-Fired Boiler Assemblies
Revision Pages

UL 746A
Polymeric Materials - Short Term Property Evaluations
Revision Pages