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Uninterruptible Power Systems

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Standard 1778, Edition 5 Edition Date: March 24, 2017
Summary of Topics b1778_5_20170324_sum.html

Subject 1778

Bulletin Dated: March 24, 2017


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

1. Add a dated reference to UL 60950 RD

3. Update to Table for temperature limits

4. Revision to bus bar temperature limits

Back to Standard 1778, Edition 5

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