UL-551 Standard for Transformer-Type Arc-Welding Machines

UL-551 - 8TH EDITION - CURRENT
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Included in this current edition are the following subparts:

 8TH EDITION - April 24, 2009
 CHANGE 07/09 - July 15, 2009
 CHANGE 12/09 - Dec. 31, 2009
 CHANGE 06/11 - June 23, 2011
 CHANGE 10/13 - Oct. 29, 2013
 CHANGE 11/13 - Nov. 19, 2013


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Document Number

UL-551

Revision Level

8TH EDITION

Status

Current

Publication Date

April 24, 2009

Page Count

58 pages