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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: January 26, 2015
Summary of Topics b1561_4_20150126_sum.html

Subject 1561

Bulletin Dated: January 26, 2015


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

1. For Preliminary Review Only: Addition of Overload Test Requirements for 240 C Insulation System

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