Duty Cycle, Generator Power Curve | Miller Electric 145 DX instruction

4-5. Duty Cycle

Continuous Welding

100% Duty Cycle at 80 Amperes CC/DC

2 Minutes Welding

8 Minutes Resting

Duty cycle is the percentage of 10 minutes that unit can weld at rated load without overheating.

YExceeding duty cycle can damage unit and void warranty.

20% Duty Cycle at 145 Amperes CC/DC

	160
	140
AMPERES	120
	100
	80

WELD	60
WELD	40
	40
	20
	0
	0	10	20	30	40	50	60	70	80	90	100
					% DUTY CYCLE

220 625−A

4-6. Generator Power Curve
									The ac generator power curves
									show the generator power available
	300								in amperes at the receptacles.
	300
	250
	200
VOLTS				240 Volt
VOLTS	150
	150
	100							120 Volt
								120 Volt
	50
	0
	0	10	20	30	40	50	60	70	80
					AMPERES
									220 581
OM-4417 Page 12

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Miller Electric 145 DX manual Generator Power Curve, 100% Duty Cycle at 80 Amperes CC/DC

145 DX specifications

Miller Electric has established itself as a leading name in the welding industry, and the Miller Electric 145 DX and 145 are notable additions to its lineup of innovative welding machines. Designed to offer versatility and efficiency, these units cater to both novice welders and seasoned professionals seeking reliable equipment for various welding applications.

One of the key features of the Miller Electric 145 DX and 145 is their advanced welding technology. Both models utilize inverter technology, which allows for a compact design while delivering exceptional power. This inverter design not only increases efficiency but also reduces energy consumption, making it an environmentally friendly choice. The lightweight nature of these units makes them highly portable, allowing users to easily transport them to job sites or move them around the workshop.

The Miller Electric 145 DX model incorporates a digital interface that simplifies set-up and operation. This user-friendly digital display shows critical parameters such as voltage and amperage, helping the operator make quick adjustments on-the-fly for optimal results. The advanced Auto-Set feature adjusts the machine settings automatically based on the material thickness and type, significantly reducing the learning curve for inexperienced welders.

Both the 145 DX and 145 models can handle a variety of welding processes, including MIG and TIG welding. This versatility makes them suitable for a wide range of applications, from automotive repair and fabrication to metal sculpture and DIY projects. The machines are capable of welding aluminum, stainless steel, and mild steel with ease, providing excellent penetration and bead appearance.

Another noteworthy characteristic of the Miller Electric 145 series is their reliability and durability. Designed with robust components that can withstand challenging working environments, these machines are built to last. The thermal overload protection feature ensures the units do not overheat, safeguarding the internal components and ensuring a longer operational life.

In summary, the Miller Electric 145 DX and 145 stand out in the welding equipment market due to their advanced inverter technology, user-friendly digital interfaces, versatile capabilities, and durability. They are ideal choices for anyone looking to elevate their welding experience, delivering consistent and reliable performance across a variety of projects.

Contents

OM-4417210 403C ProcessesDescription File Engine Drive From Miller to You Table of Contents Page Symbol Usage Arc Welding Hazards Engine Hazards Compressed Air Hazards Principal Safety Standards California Proposition 65 WarningsEMF Information Radiation can cause interference Signification des symboles − Consignes DE Sécurité − Lire Avant UtilisationUN Choc Électrique peut tuer LES Fumées ET LES GAZ peuvent être dangereux LE Soudage peut provoquer un in- cendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Pièces Chaudes peuvent provoquer des brûlures graves LE Bruit peut affecter l’ouïe ’AIR Comprimé peut provoquer des blessures ’EMPLOI Excessif peutLE Surchauffement peut endom- mager le moteur électrique LES Étincelles Volantes risquent de provoquer des blessures LE Soudage À L’ARC risque de provoquer des interférences Pour les moteurs à essencePour les moteurs diesel Boulevard, Rexdale, Ontario, Canada M9W 1R3 téléphone − Specifications Symbol DefinitionsWeld, Power, And Engine Specifications − Definitions Dimensions Dimensions, Weights, And Operating AnglesVolt-Ampere Curves Fuel Consumption Duty Cycle Generator Power Curve100% Duty Cycle at 80 Amperes CC/DC Installing Welding Generator − InstallationGrounding Generator To Truck Or Trailer Frame Grounding Generator When Supplying Building Systems Engine Prestart Checks − Standard Model13 mm Full Gasoline Fuel Valve Open valve Connecting The Battery DX Models Only Engine Prestart Checks − DX Model+ − Tools Needed 1/2 Connecting To Weld Output Terminals Selecting Weld Cable Sizes150 ft 200 ft 250 ft 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Material Thickness Reference Chart − Operating the Welding Generator Controls Standard Models See Section Stop engine and add oil if light goes on see Section Description Of Controls Standard Models See SectionTo Start Controls DX Models See Section Description Of Controls DX Models See Section − Operating Auxiliary Equipment Generator Power Panel ReceptaclesAC Receptacle RC1 − Maintenance Routine Maintenance Stop engine Servicing Air CleanerStandard Model Shown Stop engine. Close fuel valve Adjusting Engine Speed Standard Models OnlyTools Needed Weld/Power Speed Adjustment Adjusting Engine Speed DX Models OnlyIdle Speed Adjustment − Troubleshooting TroubleshootingGenerator Power Welding Engine − Electrical Diagrams Circuit Diagram For Standard Models Circuit Diagram for DX Models − Generator Power Guidelines Selecting Equipment Grounding When Supplying Building Systems How Much Power Does Equipment Require?Earth ground if supplying Amperes x Volts = Watts Approximate Power Requirements For Industrial Motors Approximate Power Requirements For Farm/Home EquipmentIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running Watts Approximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running Watts Power Required To Start Motor How Much Power Can Generator Supply?Single-Phase Induction Motor Starting Requirements KVA/HP x HP x 1000 = Starting Amperage Typical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Current Load Watts Amperes Weld current starts when electrode touches work- piece Stick Welding Procedure− Stick Welding Smaw Guidelines Striking an Arc − Scratch Start Technique Electrode and Amperage Selection ChartStriking an Arc − Tapping Technique Poor Weld Bead Characteristics Good Weld Bead CharacteristicsPositioning Electrode Holder 10-30 9090 End View of Work Angle Conditions That Affect Weld Bead Shape Electrode Movement During Welding Butt Joints Lap JointTee Joint 16 in 30 1.6 mm Tack Welds Troubleshooting − Porosity Troubleshooting − Excessive SpatterWeld Test Possible Causes Corrective Actions Troubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Excessive Penetration Troubleshooting − Waviness Of Bead Troubleshooting − Burn-ThroughTroubleshooting − Distortion − Parts List Main Assembly Standard Model Dia Part Description Quantity Mkgs Main Assembly DX Model 4546 51 41 Main Assembly OM-4417 Your distributor also gives ServiceSupport To locate a Distributor or Service Agency visit Miller Electric Mfg. CoFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s

4-5. Duty Cycle

100% Duty Cycle at 80 Amperes CC/DC

4-6. Generator Power Curve

145 DX specifications