Miller Electric XMT 456 CC, XMT 456CV manual Specifications, Duty Cycle And Overheating

Page 19

SECTION 4 − INSTALLATION

.This manual contains information on CC and CC/CV units. Differences between models are noted throughout this manual.

4-1. Specifications

Input

Rated Welding

Amperage

Voltage

Maximum

Amperes Input At Rated Load

 

 

Open-

Output 50 Hz, Three-Phase

 

 

Power

Output

Range

Range

Circuit

 

 

 

 

 

 

 

 

Voltage DC

380 V

400 V

KVA

KW

 

 

 

 

 

 

 

 

 

Three

450 A @ 38 Volts DC,

 

 

 

 

 

 

 

100% Duty Cycle;

5 − 600

10 − 38

95

33

31

21.6

19.4

Phase

550 A @ 42 Volts DC,

 

 

 

 

 

 

 

 

60% Duty Cycle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4-2. Duty Cycle And Overheating

Duty Cycle is percentage of 10 min- utes that unit can weld at rated load without overheating.

If unit overheats, thermostat(s) opens, output stops, and cooling fan runs. Wait fifteen minutes for unit to cool. Reduce amperage or duty cycle before welding.

NOTICE − Exceeding duty cycle can damage unit and void warranty.

100% Duty Cycle At 450 Amperes

60% Duty Cycle At 565 Amperes

Continuous Welding

6 Minutes Welding

4 Minutes Resting

Overheating

 

 

 

0

A/V

 

15

 

 

 

OR

 

Minutes

Reduce Duty Cycle

 

 

duty1 4/95 − SA-181 560

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Contents
File MIG Gmaw OM-203 034NProcesses DescriptionFrom Miller to You Table of Contents Standards DirectivesDecstat6/05 HOT Parts can cause severe burns Symbol UsageArc Welding Hazards Electric Shock can killFlying Metal or Dirt can injure eyes Fumes and Gases can be hazardousARC Rays can burn eyes and skin Welding can cause fire or explosionMoving Parts can cause injury Welding Wire can cause injuryFire or Explosion hazard Falling Unit can cause injuryAbout Implanted Medical Devices Principal Safety StandardsCalifornia Proposition 65 Warnings EMF InformationUNE Décharge Électrique peut entraîner la mort Symboles utilisésLES Fumées ET LES GAZ peuvent être dangereux DES Pièces Chaudes peuvent provoquer des brûlures gravesLE Soudage peut provoquer un in cendie ou une explosion LA Chute DE L’APPAREIL peut blesser LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées Risque D’INCENDIE OU D’EXPLO- SionLES Fils DE Soudage peuvent provoquer des blessures Proposition californienne 65 AvertissementsLE Soudage À L’ARC risque de provoquer des interférences Information EMF Principales normes de sécuritéEn ce qui concerne les implants médicaux OM-203 034 Manufacturer’s Warning Label Definitions Disconnect input plug or power before working on machine Keep your head out of the fumes 60 s Weee Label Symbols And DefinitionsI1max I1effManufacturer’s Rating Labels Duty Cycle And Overheating SpecificationsVolt-Ampere Curves Dimensions And WeightCV Modes CC Modes Location Connecting To Weld TerminalsSelecting a Location Movement TippingARC Welding can cause Electromagnetic Interference Weld Output Terminals And Selecting Cable Sizes350 ft 400 ft Put terminals Remote 14 Receptacle Information Connecting Weld Output CablesInput Voltage Electrical Service GuideHz Three Phase Volts AC Duplex ReceptacleL21 Tools Needed Connecting Input PowerInput Filter Board Always connect grounding conductor firstVoltage Control Mode And Voltage Control For CV Only ModelsMode Control Front Panel Controls For CV Only ModelsFront Panel Controls For CC/CV Models Preset Volts BlankPower Switch Meter Functions For CV Only ModelsPulsed MIG Meter Functions For CC/CV ModelsPanel Control Gtaw Hold TIG Gtaw BlankMode Switch Settings For CC/CV Models Touch Seconds Do not Strike Like a Match Lift-Arc TIG Procedure For CC/CV ModelsBlowing Out Inside Of Unit Do not remove case when blowing out inside of unitRemoving Case and Measuring Input Capacitor Voltage Voltmeter/Ammeter Help Displays Reset circuit breaker CB1 see Section TroubleshootingOM-203 034 − Electrical Diagram 203 505-A Circuit Diagram For CC/CV Welding Power Source 204 950−B 39 40 41 Complete AssemblyDia Part Description Quantity Mkgs 180 Your distributor also gives ServiceSupport Your distributor and/or equipment manufacturer’s To locate a Distributor or Service Agency visitMiller Electric Mfg. Co For assistance in filing or settling claims, contact
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