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Standard 1561, Edition 4

Standard for Dry-Type General Purpose and Power Transformers

UL CSDS Proposal
Standard 1561, Edition 4 Edition Date: April 23, 2012
Summary of Topics b1561_4_20120423_sum.html

Subject 1561

Bulletin Dated: April 23, 2012


The following change in requirements to the Standard for Dry-Type General Purpose and Power Transformers, UL 1561, is being proposed for preliminary review and comment only:

1. For Preliminary Review Only: Revised Requirements for the Testing of Transformers with Multiple Frequencies

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