ANSI/UL 551-2009
Standard for Safety for Transformer-Type Arc-Welding Machines

Standard No.

ANSI/UL 551-2009

Release Date

2009

Published By

American National Standards Institute （ANSI)

Latest

ANSI/UL 551-2009

Scope

Proposing a change in the scope of the standard to limit coverage to hobby welders only.

ANSI/UL 551-2009 history

• 2009 ANSI/UL 551-2009 Standard for Safety for Transformer-Type Arc-Welding Machines