NEMA EW 3:1983 (R2002)
NEMA EW 3:1983 (R2002) Semiautomatic Wire Feed Systems For Arc Welding Describes construction standards, performance characteristics, and test procedures for wire feed systems used in most types of arc welding processes.
Table of Contents
FOREWORDSCOPE
PURPOSE
Section1REFERENCEDSTANDARDSANDDEFINITIONS
ReferencedStandards
Definitions
Section2SERVICECONDITIONS
General
UsualServiceConditions
UnusualServiceConditions
Section3MECHANICALCONSTRUCTIONREQUIREMENTS
FramesandEnclosures-GeneralStrengthConditions
EnclosureofLiveParts
OpeningsinEnclosures
EnclosureConstruction
RotatingParts
FillerWireSupply
CorrosionProtection
ServiceLineHoses
GunAssembly
WaterCooling
DropTesting
Section4ELECTRICALCONSTRUCTIONREQUIREMENTS
ServiceLineCords,Cables,andConnections
WireFeedUnitandControl
GunAssemblyandGunCableAssembly
High-PotentialTestandInsulationResistance
Section5RATINGANDPERFORMANCE
RatingofWireFeedSystem
Performance
TemperatureTesting
OtherPerformanceData
Section6MARKINGS
WireFeederNameplate
GunAssemblyandGunCableAssemblyNameplate
LISTOFTABLES
3.1ThicknessofSheetMetalforEnclosures
5.1MaximumTemperaturesofExternalSurfaces
LISTOFFIGURES
3.1Probe
3.2EnclosureOpening
3.3Probe
5.1Part1-FluxCoredArcWeldingwithoutGas
5.1Part2-FluxCoredArcWeldingwithCO2Gas
5.2Part1-GasMetalArcWeldingwithCO2Gasand
SolidElectrode
5.3GasTungstenArcWeldingwithFillerWire