Miller Electric Delta-Fab manual Specifications, Duty Cycle And Overheating, 230

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SECTION 3 − INSTALLATION

3-1. Specifications

			Amperes Input at Rated Load Output,
	Voltage Range			60 Hz, Three-Phase
	Voltage Range
Rated Welding Output	DC	Max OCV DC	230 V		460 V	575 V	KVA	KW

375 A @ 35 Volts DC,	10 − 45	45	69		34.5	27.5	27.5	17.5
100% Duty Cycle	10 − 45	45	4*		2*	1.6*	1.61*	0.46*
100% Duty Cycle			4*		2*	1.6*	1.61*	0.46*

*While idling

3-2. 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.

Y Exceeding duty cycle can damage unit and void warranty.

100% Duty Cycle

Continuous Welding

Overheating	V
0	V
	15
	OR
Minutes	Reduce Duty Cycle	209 810
Minutes		209 810

OM-2241 Page 9

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Contents Processes OM-2241209 815HDescription File MIG GmawFrom Miller to You Table of Contents Page Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings EMF Information Principal Safety StandardsAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux UNE Décharge Électrique peut entraîner la mortIndique un message de sécurité particulier Incendie ou une explosion LE Soudage peut provoquer unDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesLA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU D’EXPLO’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessuresEn ce qui concerne les stimulateurs cardiaques Principales normes de sécuritéDuty Cycle And Overheating Specifications230 OverheatingVolt-Ampere Curves Selecting a Location Be careful when placing or moving unit over uneven surfacesTipping MovementDimensions Dimensions And WeightsWeight VAC Receptacle And Supplementary ProtectorsWeld Output Terminals And Selecting Cable Sizes Connecting Weld Output CablesDuty Cycle Remote 14 Receptacle RC8 Turn off power before con- necting to receptacleRemote 14 Receptacle RC8 Information InformationPlacing Jumper Links Electrical Service GuideInput Voltage Input Amperes At Rated OutputWelding Power Source Input Power Connections Connecting Input PowerDisconnect Device Input Power Con- nections Disconnect input power before maintaining Months Routine MaintenanceControls Fuse F1 Disconnect input power be- fore opening rear access doorShort Circuit Shutdown Trouble Remedy Troubleshooting Table− Electrical Diagram OM-2241 − Parts List 1Main Assembly Panel, Front w/Components 175 Rectifier, Si Diode SR1Panel, Rear w/Components Support ServiceMiller Electric Mfg. Co Owner’s Record

SECTION 3 − INSTALLATION

3-1. Specifications

230 V

3-2. Duty Cycle And Overheating

Overheating