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  • NEMA EW 1-1988 (R1994, R1999, R2004)

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Electric Arc-Welding Power Sources

    Available format(s):  Hardcopy, PDF

    Superseded date:  18-04-2023

    Language(s):  English

    Published date:  26-05-2021

    Publisher:  National Electrical Manufacturers Association

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    PURPOSE
    SCOPE
    Section 1 REFERENCED STANDARDS
      Referenced Standards
      Definitions
    Section 2 GENERAL
      Suitability of Operation
      Arc Welding Power Source with Integral Wire Feed Unit
      Service Conditions
      Usual Service Conditions
      Unusual Service Conditions
      Installation and Operation
    Section 3 CONSTRUCTION REQUIREMENTS - MECHANICAL
               CONSIDERATIONS
      Frame and Enclosure
      Enclosure Construction
      Openings in Enclosures
      Corrosion Protection
      Service Line Hoses
      Water Cooling
      Brushes
      Jerk and Drop Tests
      Stacking of Arc Welding Power Sources
    Section 4 CONSTRUCTION REQUIREMENTS - ELECTRICAL
               CONSIDERATIONS
      Power Supply Connection - General
      Power Supply by Flexible Cord
      Power Supply by Permanent Wiring System
      Grounding
      Corrosion Protection
      Output Provisions
      Internal Wiring Requirements
      Spacings
      Classification of Insulation Systems
      Requirements for Specific Components
      Output Regulating Taps
      Auxiliary Power Supply
      Short Circuit of Welding Circuit
    Section 5 RATINGS AND PERFORMANCE
      Input Ratings of Arc Welding Power Sources Operating
      From Electrical Power Supplies
      Power Factor Correction
      Open Circuit Voltage
      Output Ratings of Constant Current NEMA Class I Arc
        Welding Power Sources
      Output Ratings of Constant Current NEMA Class II Arc
        Welding Power Sources
      Output Ratings of Constant Current NEMA Class III Arc
        Welding Power Sources
      Output Ratings of Constant Voltage NEMA Class I Arc
        Welding Power Sources
      No Load Operation
      Temperature Rise
      Nameplate Marking
    Section 6 TEMPERATURE TESTS
      Testing Procedures for Arc Welding Power Sources
      Thermometer Method of Temperature Determination
      Resistance Method of Temperature Determination
      Applied Thermocouple Method of Temperature Determination
      Determination of Ambient Temperature
      Cooling Air Temperature During Tests
      Omission of Temperature Test on Duplicate Apparatus
      Correction of Temperature to Time of Shutdown
      Stopping Generator-Type Power Sources for Temperature
        Tests
    Section 7 HIGH-POTENTIAL TESTS
      High Potential Tests
      Test Voltage
      Duration of Application of Test Voltage
      Points of Application of Test Voltage
      Temperature at Which High Potential Tests Are to be Made
      High Potential Test Procedure for Components and
        Accessories
      Production Line High Potential Testing
    Section 8 EFFICIENCY AND POWER FACTOR
      Method of Determining Efficiency and Power Factor
    Section 9 POWER SOURCES TO BE USED WITH GAS TUNGSTEN
               ARC WELDING (GTAW)
      General
      Definitions
      Volt Ampere Relationship for GTAW
      Categories of GTAW Power Sources
      Nameplate Marking
    Section 10 ARC WELDING POWER SOURCES WITH HIGH FREQUENCY
                ARC STARTING AND/OR STABILIZING
      General
      Definitions
      HF Classification
      Radio Frequency Radiation
      General Principles for Installation of High Frequency
        Stabilized Arc Welding Installations
      Certifications of HFSAW Installations

    Abstract - (Show below) - (Hide below)

    Defines performance characteristics, ratings and test procedures for ac and dc arc-welding apparatus and associated equipment, as well as recommended installation and test procedures for high-frequency stabilized arc-welding machines.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher National Electrical Manufacturers Association
    Status Superseded
    Superseded By

    Standards Referenced By This Book - (Show below) - (Hide below)

    ANSI Z49.1 : 2012 SAFETY IN WELDING, CUTTING, AND ALLIED PROCESSES
    MIL-E-17764 Revision C:1982 ELECTRODE, CUTTING, TUBULAR, STEEL, COVERED
    AWS WHC2.01 : 0 WELDING PROCESSES - PART 1, WELDING HANDBOOK, 9TH EDITION, VOL. 2 - CHAPTER 1: ARC WELDING POWER SOURCES
    MIL-W-80062 Revision C:1985 WELDING MACHINE, ARC, DC, TRANSFORMER RECTIFIER, ADJUSTABLE CONSTANT VOLTAGE
    AWS WHC2.02 : 0 WELDING PROCESSES - PART 1, WELDING HANDBOOK, 9TH EDITION, VOL. 2 - CHAPTER 2: SHIELDED METAL ARC WELDING
    AWS D16.2M/16.2 : 2007 GUIDE FOR COMPONENTS OF ROBOTIC AND AUTOMATIC ARC WELDING INSTALLATIONS
    MIL-E-23765 Revision B:1985 ELECTRODES AND RODS - WELDING, BARE, SOLID AND ALLOYED CORED, GENERAL SPECIFICATION FOR
    AWS QC19 : 2002 ERRATA 2009 SPECIFICATION FOR AWS CERTIFICATION OF ROBOTIC ARC WELDING PERSONNEL
    NEMA EW 4-2009 GRAPHIC SYMBOLS FOR ARC WELDING AND CUTTING APPARATUS
    NEMA EW 3:1983(R2002) Semi-Automatic Wire-Feed Systems for Arc Welding
    CSA W117.2 : 2012 SAFETY IN WELDING, CUTTING, AND ALLIED PROCESSES
    CSA W117.2 : 2012 : INC : UPD 2 : 2014 SAFETY IN WELDING, CUTTING, AND ALLIED PROCESSES
    CAN/CSA-W117.2-12 (R2017) Safety in welding, cutting, and allied processes
    CSA W117.2 : 2012 : INC : UPD 1 : 2013 SAFETY IN WELDING, CUTTING, AND ALLIED PROCESSES

    Standards Referencing This Book - (Show below) - (Hide below)

    UL 551:8ED 2009-04 Transformer-Type Arc-Welding Machines
    NEMA WD 1:1999(R2005, R2010, R2015, R2020) General Color Requirements for Wiring Devices
    CGA E 1 : 2016 STANDARD FOR RUBBER WELDING HOSE AND HOSE CONNECTIONS FOR GAS WELDING, CUTTING, AND ALLIED PROCESSES
    CGA E 2 : 91(R2004) HOSE LINE CHECK VALVE STANDARDS FOR WELDING AND CUTTING
    NEMA EW 3:1983(R2002) Semi-Automatic Wire-Feed Systems for Arc Welding
    AWS C5.6 : 1989 RECOMMENDED PRACTICES FOR GAS METAL ARC WELDING
    IEEE C57.12.90-2010 IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers
    ARPM IP2 : 2015 HOSE HANDBOOK
    IEEE C63.2-2009 American National Standard for Electromagnetic Noise and Field Strength Instrumentation, 10 Hz to 40 GHz Specifications
    NFPA 70 : 2017 NATIONAL ELECTRICAL CODE
    IEEE 112-2004 IEEE Standard Test Procedure for Polyphase Induction Motors and Generators
    ARPM IP7 : 2016 SPECIFICATIONS FOR RUBBER WELDING HOSE
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