Miller Electric Big Blue 251D manual Optional AC Power Plant Curves

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4-7. Optional AC Power Plant Curves

The ac power curves show the gen- erator power in amperes available at the single-phase 120/240 volt or three-phase 240 volt terminals.

A. 7.5 KVA/KW Single-Phase AC Power Plant (No Weld Load)

B. 10 KVA/KW Three-Phase AC Power Plant (No Weld Load)

AC VOLTS

280

260

240

220

200

180

AC AMPERES

rsb13.1 12/94 - 134 636-A / 206 032

OM-480 Page 13

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Contents Description ProcessesVisit our website at OM-480128 576AC January Engine Driven Welding GeneratorFrom Miller to You Table of Contents Options and Accessories Warranty Arc Welding Hazards Symbol UsageEngine Hazards Compressed Air Hazards California Proposition 65 Warnings Principal Safety StandardsEMF Information Radiation can cause interference− Consignes DE Sécurité − Lire Avant Utilisation Signification des symbolesUN Choc Électrique peut tuer LES Fumées ET LES GAZ peuvent être dangereuxDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un in- cendie ou une explosionDES Pièces Chaudes peuvent provoquer des brûlures graves LE Bruit peut affecter l’ouïeDES Organes Mobiles peuvent provoquer des blessures ’EXPLOSION DE LA Batterie peutLA Chaleur DU Moteur peut pro- voquer un incendie ’AIR Comprimé peut provoquer des blessuresInformation sur les champs électromagnétiques Principales normes de sécurité− Definitions Symbols And DefinitionsDimensions, Weights, And Operating Angles − SpecificationsWeld, Power, And Engine Specifications Exceeding duty cycle can damage unit and void warranty Curve shows typical fuel use under weld or power loadsFuel Consumption Duty Cycle And OverheatingVolt-Ampere Curves AC Generator PowerOptional AC Power Plant Curves Connecting The Battery − InstallationInstalling Welding Generator Engine Prestart Checks Installing Muffler PipeStop engine and let cool Fuel Do not use gasoline. GasolineConnecting To Weld Output Terminals Installing Ether Cylinder Optional Ether Starting Aid150 ft 200 ft 250 ft Selecting Weld Cable Sizes350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Put terminalsControls See Section − Operating the Welding GeneratorRemote A/V Control Description Of Front Panel Controls See SectionStop engine and fix trouble if either light goes on Do not use Ether if engine is runningX 15 a + 120 V x 10 a = 3.0 kVA/kW OM-480 − Operating Auxiliary EquipmentVolt Duplex And Optional Gfci Receptacles 240 V 15 a AC Receptacle RC1 Volt Duplex Receptacle OptionalCircuit Breakers CB1 And CB2 X 10 a + 120 V x 5 a = 3.0 kVA/kWConnecting Optional AC Power Plant 240 Volt Twistlock Receptacle Optional − Maintenance and Troubleshooting Maintenance Label Servicing Air Cleaner To change oil and filter Servicing Fuel And Lubrication SystemsTo replace primary fuel filter To replace secondary fuel filterModels With Automatic Idle Optional Adjusting Engine SpeedStandard Models Full Empty Overload Protection Servicing Optional Ether Starting AidTroubleshooting Inspecting And Cleaning Optional Spark ArrestorStop engine and let cool. Reinstall cleanout plug WeldingCheck connections to ac power plant see Section Generator PowerEngine Maximum see SectionCircuit Diagram For Welding Generator − Electrical DiagramWelding Generator − RUN-IN ProcedureWetstacking Procedure at less than Run-In Procedure Using Load BankStop engine Do not touch hot exhaust From flammables Do not PerformBank/grid Run-In Procedure Using Resistance GridFrom flammables Do not perform run-inGrounding Generator To Truck Or Trailer Frame − Generator Power GuidelinesSelecting Equipment How Much Power Does Equipment Require? Grounding When Supplying Building SystemsEarth ground if supplying Amperes x Volts = WattsApproximate Power Requirements For Farm/Home Equipment Approximate Power Requirements For Industrial MotorsIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements For Contractor EquipmentHow Much Power Can Generator Supply? Power Required To Start MotorSingle-Phase Induction Motor Starting Requirements KVA/HP x HP x 1000 = Starting AmperageWork like a Pro Typical Connections To Supply Standby PowerCurrent Load Watts Amperes Selecting Extension Cord Use Shortest Cord PossibleOM-480 125 124 123 122 − Parts List120 121 117 1162526 126 Dia Part Description Quantity Mkgs 128 111 Panel, Front w/Components -1ItemPanel, Front w/Components -1Item 111 Cont’d Generator Generator -1Item Includes 114Page Page Support ServiceYour distributor also gives Miller Electric Mfg. Co To locate a Distributor or Service Agency visitFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s