Connecting Input Power, = Gnd/Pe | Miller Electric CST 250 VRD

3-12. Connecting Input Power

Green Or

Green/Yellow

3	1

	2
	L1
	L2	L1
	L3	L1
	L3	L2
		L2

Green Or

Green/Yellow

YAlways connect grounding conductor first

=GND/PE 1

1

Green or

Green/Yellow

6

1

YDisconnect and lockout/tag- out input power before connecting input conduc- tors from unit.

YHave only qualified persons make this installation.

See rating label on unit and check input voltage available at site.

1Input And Grounding Conductors

2Line Disconnect Device See Section 3-9.

For three-phase operation:

YAlways connect green or green/yellow wire to supply grounding terminal, never to a line terminal.

2Connect black, white, and red wires (L1, L2, L3) to line terminals.

For single-phase operation:

YAlways connect green or green/yellow wire to supply grounding terminal, never to a line terminal.

3Black And White Input Conductor

4Red Input Conductor

5Insulation Sleeving

6Electrical Tape

Insulate and isolate red conductor as shown.

3

4

5

input_2 3/96 - 803 080

OM-220 812 Page 18

Image 22

Miller Electric CST 250 VRD manual Connecting Input Power, For three-phase operation, For single-phase operation, = Gnd/Pe

Contents

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