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UL 551

UL Standard for Safety Transformer-Type Arc-Welding Machines

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Organization: UL
Publication Date: 24 April 2009
Status: active
Page Count: 55
scope:

These requirements cover limited duty welding and cutting power sources, wire feeders, torches, and electrode holders that are intended for use by a layperson in a nonindustrial setting in accordance with the National Electrical Code, NFPA 70. Products covered by these requirements include only those welding products rated 600 volts or less, and are commonly known as hobby welders.

These requirements do not cover motor-generator sets or rectifier- or resistance-type welding machines. These requirements do not cover industrial or professional use welders.

Document History

UL 551
April 24, 2009
UL Standard for Safety Transformer-Type Arc-Welding Machines
These requirements cover limited duty welding and cutting power sources, wire feeders, torches, and electrode holders that are intended for use by a layperson in a nonindustrial setting in accordance...
April 24, 2009
UL Standard for Safety Transformer-Type Arc-Welding Machines
A description is not available for this item.
April 24, 2009
UL Standard for Safety Transformer-Type Arc-Welding Machines
These requirements cover limited duty welding and cutting power sources, wire feeders, torches, and electrode holders that are intended for use by a layperson in a nonindustrial setting in accordance...
April 24, 2009
UL Standard for Safety Transformer-Type Arc-Welding Machines
A description is not available for this item.
April 24, 2009
UL Standard for Safety Transformer-Type Arc-Welding Machines
These requirements cover limited duty welding and cutting power sources, wire feeders, torches, and electrode holders that are intended for use by a layperson in a nonindustrial setting in accordance...
April 24, 2009
UL Standard for Safety Transformer-Type Arc-Welding Machines
These requirements cover limited duty welding and cutting power sources, wire feeders, torches, and electrode holders that are intended for use by a layperson in a nonindustrial setting in accordance...
April 24, 2009
UL Standard for Safety Transformer-Type Arc-Welding Machines
These requirements cover limited duty welding and cutting power sources, wire feeders, torches, and electrode holders that are intended for use by a layperson in a nonindustrial setting in accordance...
April 24, 2009
UL Standard for Safety Transformer-Type Arc-Welding Machines
These requirements cover limited duty welding and cutting power sources, wire feeders, torches, and electrode holders that are intended for use by a layperson in a nonindustrial setting in accordance...
January 10, 1994
UL Standard for Safety Transformer-Type Arc-Welding Machines
These requirements cover arc-welding machines of the transformer type rated 600 volts or less, to be used in accordance with the National Electrical Code, NFPA 70. These requirements do not cover...
551
January 10, 1994
UL Standard for Safety Transformer-Type Arc-Welding Machines
A description is not available for this item.
January 10, 1994
UL Standard for Safety Transformer-Type Arc-Welding Machines
A description is not available for this item.
551
January 1, 1994
UL Standard for Safety Transformer-Type Arc-Welding Machines
A description is not available for this item.

References

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