Browse & Buy UL Standards

Uninterruptible Power Systems

UL CSDS Proposal
Standard 1778, Edition 5 Edition Date: August 11, 2017
Summary of Topics b1778_5_20170811_sum.html

Subject 1778

Bulletin Dated: August 11, 2017


The following topics for the Standard for Uninterruptible Power Systems, UL 1778, are being recirculated:

3. Update to Table for temperature limits

4. Revision to bus bar temperature limits

Back to Standard 1778, Edition 5

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.