Miller Electric OM-2241 Connecting Input Power, Welding Power Source Input Power Connections

Page 20

3-13. Connecting Input Power

 

 

3

 

 

 

 

= GND/PE Earth Ground

9

 

 

 

 

 

8

 

 

 

11

 

 

 

10

 

 

 

 

2

4

 

 

 

7

 

 

 

 

 

1

 

 

 

IMPORTANT

 

 

6

3

 

 

Input Contactor

 

 

L1 (U)

 

 

7

L2 (V)

 

4

 

L3 (W)

 

 

 

 

5

4

 

 

 

3

 

 

 

 

 

 

= GND/ PE Earth Ground

Tools Needed:

3/8 in

3/8 in

YInstallation must meet all National and Local Codes − have only quali- fied persons make this installation.

YDisconnect and lockout/tagout in- put power before connecting input conductors from unit.

YMake input power connections to the welding power source first.

YAlways connect green or green/ yellow conductor to supply grounding terminal first, and never to a line terminal.

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

1Input Power Conductors (Customer Supplied Cord)

Select size and length of conductors using Section 3-11.Conductors must comply with national, state, and local electrical codes. If applicable, use lugs of proper amperage capacity and correct hole size.

Welding Power Source Input Power Connections

2 Strain Relief

Route conductors (cord) through strain re- lief and tighten screws.

3Machine Grounding Terminal

4Green Or Green/Yellow Grounding Conductor

5Reed Switch (Ground Current Sensor) (Optional)

Connect green or green/yellow grounding conductor to welding power source grounding terminal first. If unit is equipped with optional ground current sensor, route grounding conductor through reed switch two times and connect to grounding termi- nal.

6Welding Power Source Line Terminals

7Input Conductors L1 (U), L2 (V) And L3 (W)

Connect input conductors L1 (U), L2 (V) and L3 (W) to welding power source line terminals.

Close and secure access door on welding power source.

Disconnect Device Input Power Con- nections

8Disconnect Device (switch shown in OFF position)

9Disconnect Device (Supply) Grounding Terminal

Connect green or green/yellow grounding conductor to disconnect device grounding terminal first.

10 Disconnect Device Line Terminals

Connect input conductors L1 (U), L2 (V) And L3 (W) to disconnect device line terminals.

11 Over-Current Protection

Select type and size of over-current protection using Section 3-11(fused dis- connect switch shown).

Close and secure door on line disconnect device. Remove lockout/tagout device, and place switch in the On position.

800 103-C / Ref. 801 116-A

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Contents
Description OM-2241Processes From Miller to You Table of Contents Page Symbol Usage Marks a special safety messageArc Welding Hazards Electric Shock can killARC Rays can burn eyes and skin Welding can cause fire or explosionFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information Identifie un message de sécurité particulier − Consignes DE Sécurité − À Lire Avant UtilisationLE Soudage peut causer un incen- die ou une explosion LES Particules Projetées peu- vent blesser les yeuxLES Pièces Chaudes peuvent cau- ser des brûlures graves LE Bruit peut affecter l’ouïeRisque D’INCENDIE OU D’EXPLO LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut Faire LES Pièces Mobiles peuvent cau- ser des blessuresConsignes relatives aux stimulateurs cardiaques Principales normes de sécuritéInformation sur les champs électromagnétiques Specifications Duty Cycle And Overheating230 OverheatingVolt-Ampere Curves Be careful when placing or moving unit over uneven surfaces Selecting a LocationTipping Movement Location And AirflowDimensions And Weights DimensionsWeight VAC Receptacle And Circuit BreakersDuty Cycle Weld Output Terminals And Selecting Cable Sizes10 − 60% 60 − 100% Turn off power before con- necting to receptacle Remote 14 Receptacle RC8Remote 14 Receptacle RC8 Information InformationElectrical Service Guide Placing Jumper LinksInput Voltage Input Amperes At Rated OutputDisconnect Device Input Power Con- nections Connecting Input PowerWelding Power Source Input Power Connections Controls Routine MaintenanceDisconnect input power before maintaining Months Short Circuit Shutdown Disconnect input power be- fore opening rear access doorFuse F1 Troubleshooting Table Trouble Remedy− Electrical Diagram OM-2241 − Parts List 1Main Assembly 2Panel, Front w/Components -1Item Rectifier, Si Diode SR1 1754Panel, Rear w/Components -1Item Service SupportOwner’s Record Miller Electric Mfg. Co