Miller Electric Metro 250D manual Weld, Power, and Engine Specifications, Volt-Ampere Curve

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3.Specifications

3.1Weld, Power, and Engine Specifications

	Rated Welding	Amperage	Maximum	Auxiliary Power		Fuel	Average Sound
	Rated Welding	Amperage	Open-Circuit	Auxiliary Power	Engine	Fuel	Average Sound
	Output	Range	Open-Circuit	Rating	Engine	Capacity	Level
	Output	Range	Voltage DC	Rating		Capacity	Level
			Voltage DC

	280 A, 31 V DC,		61	Single-Phase,	Deutz/Ruggerini
	60% Duty Cycle	20 − 280	61	Single-Phase,	RD211 Air-Cooled,	11.8 US gal	74.5 dB(A) at
	250 A, 30 V DC,	20 − 280	(Average)	10 kVA/kW, 42 A,	Two-Cylinder, 23	(44.6 L)	23 ft (7 m)
	250 A, 30 V DC,		(Average)	120/240 V, 60 Hz	Two-Cylinder, 23	(44.6 L)	23 ft (7 m)
	100% Duty Cycle				HP Diesel Engine

3.2Dimensions, Weights, and Operating Angles

	Dimensions
	Dimensions
Height	41 in (1041 mm)

Width	30 in (762 mm)

Depth	54-1/2 in (1384 mm)

A29 in (737 mm)

B36-3/4 in (933 mm)

C9/16 in (14 mm) Dia.

Weight

960 lb (435 kg)

A

Y Do not exceed operating angles while run- ning or engine damage will occur.

Y Do not move or operate unit where it could tip.

B

25°

15°	25°

15°

C 4 Holes

angles 2/97 ST-158 938

3.3Volt-Ampere Curve

The volt-ampere curve shows the minimum and maximum voltage and amperage output capabilities of the welding generator. Curves of all other settings fall between the curves shown.

SA-180 261

OM-402

15

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Contents Processes OM-402BDescription From Miller to You Metro 250D Table of ContentsPage Symbol Usage Safety Precautions − Read Before UsingArc Welding Hazards Engine Hazards Engine Heat can cause fire Battery Explosion can BlindMoving Parts can cause injury Engine Exhaust Gases can killARC Welding can cause interference Principal Safety StandardsEMF Information Radiation can cause interferenceLES Fumées ET LES GAZ peuvent être dangereux Signification des symbolesConsignes de sécurité − lire avant utilisation UN Choc Électrique peut tuerLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un in- cendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessures’EXPLOSION DE LA Batterie peut LA Chaleur DU Moteur peut pro- voquer un incendieUNE Remorque QUI Bascule peut entraîner des blessures Principales normes de sécuritéInformation sur les champs électromagnétiques Électrostatiques peuvent endommager les circuits imprimésDefinitions Symbols and DefinitionsGeneral Precautionary Label Fan and Moving Parts Label Battery Charging LabelDiesel Fuel Label Hot Muffler LabelActivation Tag Falling Equipment Label− 50 h Std Manufacturer’s Rating Label Do Not Use Ether LabelVolt-Ampere Curve SpecificationsWeld, Power, and Engine Specifications Dimensions, Weights, and Operating AnglesDuty Cycle and Overheating Fuel ConsumptionLocation Grounding InstallationAC Auxiliary Power Curve Installing Welding GeneratorConnect negative − cable last Connecting Battery and Installing Exhaust PipeEngine Prestart Checks Stop engine10 − 60% 60 − 100% Duty 10 − 100% Duty Cycle Connecting to Weld Output TerminalsSelecting Weld Cable Sizes 100 ft 30 m or LessRef. ST-158 Remote 14 Receptacle RC1 InformationSocket Information Plug Using Idle Lock SwitchOperating the Welding Generator Front Panel ControlsRemote Amperage and Contactor Control Operating Auxiliary Equipment Auxiliary Power ReceptaclesMaintenance & Troubleshooting 100 Hrs Maintenance Changing Engine Oil and Oil Filter Changing Fuel Filters Servicing Air CleanerTo Clean air filter Do not clean housing with air hoseIdle Speed Adjustment Adjusting Engine SpeedWeld/Power Speed Adjustment Engine Control Circuit Weld And Auxiliary Power CircuitsRemote Control Circuit Overload ProtectionTrouble Remedy Welding TroubleshootingStop engine and let cool. Reinstall cleanout plug Servicing Optional Spark ArrestorEngine Troubleshooting Auxiliary Power TroubleshootingUle OM-402 Circuit Diagram for Welding Generator Electrical DiagramSC-181 Wetstacking Run-In ProcedureHeavy loading during first Load Bank Run-In Procedure Using Load BankRun-In Procedure Using Resistance Grid Selecting Equipment Auxiliary Power GuidelinesGrounding Generator to Truck or Trailer Frame How Much Power Does Equipment Require? Grounding When Supplying Building SystemsAmperes x Volts = Watts Farm/Home Equipment Rating Starting Watts Running Watts Approximate Power Requirements for Industrial MotorsApproximate Power Requirements for Farm/Home Equipment Industrial Motors Rating Starting Watts Running WattsContractor Rating Starting Watts Running Watts Approximate Power Requirements for Contractor EquipmentKVA/HP x HP x 1000 = Starting Amperage Volts Power Required to Start MotorHow Much Power Can Generator Supply? Single-Phase Induction Motor Starting RequirementsTypical Connections to Supply Standby Power Current Load Watts Amperes Selecting Extension Cord Use Shortest Cord PossibleMain Assembly Parts ListST-801 488-A PC6 11.1CB9 Panel, Front w/Components .1 Item CB5 11.2Generator .1 Item Diode Board Control Box w/Components .1 ItemOM-402 Page OM-402 Page Metro 250D Options and AccessoriesCall Miller for your local Miller distributor Miller Electric Mfg. Co Owner’s Record