TIG Gtaw Volt-Ampere Curve | Miller Electric CST 250 VRD manual

3-4. TIG (GTAW) Volt-Ampere Curve

LIFT ARC TIG (GTAW)

	35
	30
	25
VOLTS	20
VOLTS
DC	15
DC
	10
	5
	0	0	50	100	150	200	250	300

DC AMPS

Volt-ampere curves show minimum and maximum voltage and amperage output capabilities of welding power source. Curves of other settings fall between curves shown.

OM-220 812 Page 11

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Miller Electric CST 250 VRD manual TIG Gtaw Volt-Ampere Curve

Contents

OM-220 812B ProcessesDescription From Miller to You Table of Contents Page Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding Hazards Buildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyes California Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux Signification des symboles− Consignes DE Sécurité − À Lire Avant Utilisation LES Décharges Électriques peuvent être mortelles LE Bruit peut affecter l’ouïe LE Soudage peut causer un incen- die ou une explosionLES Particules Projetées peu- vent blesser les yeux LES Pièces Chaudes peuvent cau- ser des brûlures graves LES Pièces Mobiles peuvent cau- ser des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut Faire Principales normes de sécurité Information sur les champs électromagnétiquesConsignes relatives aux stimulateurs cardiaques − Installation SpecificationsDuty Cycle And Overheating DC Amps Stick Smaw Volt-Ampere Curves TIG Gtaw Volt-Ampere Curve Dimensions And Weight Selecting a LocationLocation And Airflow Terminals Amperes Weld Output Terminals And Selecting Cable Sizes150 ft 200 ft 250 ft 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Positive + Weld Output Terminal Input Voltage Electrical Service Guide50/60 Hz Single-Phase 50/60 Hz Three-Phase Stick Dcep Direct Current Electrode Positive Connections Selecting 220 Volts AC Single/Three Phase Input Voltage Relinking Board Connection For 400 440 VAC Input Power Selecting 400 440 Volts AC Three Phase Input Voltage = GND/PE Connecting Input PowerFor three-phase operation For single-phase operation Controls − Operation Lift-ArctTIG Normal Process Select Control Application Stick Start Procedure − Scratch Start TechniqueLift-ArcStart Procedure Lift-Arc Start Rack Mounting Amp Adjust ControlRemote 14 Receptacle Information Fan-On-Demand Months − Maintenance and TroubleshootingRoutine Maintenance Blowing Out Inside Of Unit Trouble Possible Causes Remedy Troubleshooting Use proper size and type of weld cable see Section Circuit Diagram − Electrical Diagrams Safety Information About Tungsten − Selecting and Preparing Tungsten ElectrodeSelecting Tungsten Electrode Tungsten Electrode OM-220 812 Main Assembly − Parts List CAPACITOR,ELCTLT 2400 UF 500 VDC can 2.5 DIA Panel, Front w/Components Panel, Rear w/Components Magnetics Subassembly Heat Sink Assembly, Output Diode Base Assembly Heat Sink Assembly, Input Page Support Service Miller Electric Mfg. Co Owner’s Record