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Standard for Transformer-Type Arc-Welding Machines

UL Standard
Standard 551, Edition 8 Edition Date: April 24, 2009 $505.00-$1,258.00

Revisions and Related Documents

Revisions (7)

Revision - These documents only contain the revised pages. The Standard document includes all available Revisions.
January 08, 2018
January 03, 2018
November 19, 2013
October 29, 2013
June 23, 2011
December 31, 2009
July 15, 2009
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CSDS
Proposals (2)

CSDS Proposal

CSDS Proposals

An electronic document associated with a UL Standard for Safety or Outline of Investigation, and issued by UL to propose:

  • A revision of a single or multiple requirement(s).
  • A complete new edition of an existing Standard or Outline.
  • A new Standard or Outline that has not previously been published.

CSDS Proposals provide access to view the proposal and submit comments within UL's Collaborative Standards Development System (CSDS) appropriately.

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Summary of Topics (SOT)
November 10, 2017 View
September 06, 2013 View
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CRD/PAGs (0)

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Other Updates (0)

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Referenced Standards (43)

StandardEditionTitle
20 14 General-Use Snap Switches
44 19 Thermoset-Insulated Wires and Cables
62 20 Flexible Cords and Cables
83 16 Thermoplastic-Insulated Wires and Cables
224 7 Extruded Insulating Tubing
248-1 3 Low-Voltage Fuses - Part 1: General Requirements
248-6 2 Low-Voltage Fuses - Part 6: Class H Non-Renewable Fuses
248-7 2 Low-Voltage Fuses - Part 7: Class H Renewable Fuses
248-9 2 Low-Voltage Fuses - Part 9: Class K Fuses
248-11 3 Low-Voltage Fuses - Part 11: Plug Fuses
248-12 3 Low-Voltage Fuses - Part 12: Class R Fuses
248-15 3 Low-Voltage Fuses - Part 15: Class T Fuses
310 9 Standard for Electrical Quick-Connect Terminals
429 7 Standard for Electrically Operated Valves
486A-486B 3 Wire Connectors
489 13 Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures
498 16 Standard for Attachment Plugs and Receptacles
510 10 Standard for Polyvinyl Chloride, Polyethylene and Rubber Insulating Tape
746A 6 Standard for Polymeric Materials - Short Term Property Evaluations
746B 5 Standard for Polymeric Materials - Long Term Property Evaluations
746C 7 Standard for Polymeric Materials - Use in Electrical Equipment Evaluations
746D 8 Standard for Polymeric Materials - Fabricated Parts
796 11 Standard for Printed-Wiring Boards
810 5 Standard for Capacitors
817 12 Standard for Cord Sets and Power-Supply Cords
873 12 Standard for Temperature-Indicating and -Regulating Equipment
1004-1 2 Standard for Rotating Electrical Machines - General Requirements
1004-2 2 Standard for Impedance Protected Motors
1004-3 2 Standard for Thermally Protected Motors
1059 4 Standard for Terminal Blocks
1063 8 Standard for Machine-Tool Wires and Cables
2111 1 Standard for Overheating Protection for Motors
4248-1 2 Fuseholders - Part 1: General Requirements
4248-6 2 Fuseholders - Part 6: Class H
4248-9 1 Fuseholders - Part 9: Class K
4248-11 1 Fuseholders - Part 11: Type C (Edison Base) and Type S Plug Fuse
4248-12 2 Fuseholders - Part 12: Class R
4248-15 1 Fuseholders - Part 15: Class T
5085-1 1 Low Voltage Transformers - Part 1: General Requirements
5085-2 1 Low Voltage Transformers - Part 2: General Purpose Transformers
60691 4 Standard for Thermal-Links - Requirements and Application Guide
60730-1 5 Automatic Electrical Controls - Part 1: General Requirements
61058-1 5 Switches for Appliances - Part 1: General Requirements
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Red Line Standards (0)

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