Proposed Revisions of American Standards C37.3 and C37.4 AIEE Committee Report

The AIEE New Working Group on Methods of Rating Power Circuit Breakers deemed it advisable to issue a separate document for the various definitions used in connection with the revision of the Rating Structure for Alternating-Current Power Circuit Breakers, C37.4, and the associated sections through C37.12. In this connection it was suggested that vacant section C37.3 be used for this purpose. These definitions were formerly included in Conference Paper 59-186 (unpublished) presented at the 1959 Winter General Meeting, and have been revised as a result of comments received.