Hobart Champion 4500 manual Power Required To Start Motor, How Much Power Can Generator Supply?

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10-8. Power Required To Start Motor

4

 

 

 

 

 

 

 

AC MOTOR

 

2

1

 

 

 

 

VOLTS

230

AMPS

2.5

 

 

3

 

CODE

M

Hz

60

 

 

 

HP

1/4

PHASE 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Single-Phase Induction Motor Starting Requirements

Motor Start

G

 

H

J

K

L

M

 

N

 

P

Code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KVA/HP

6.3

 

7.1

8.0

9.0

10.0

11.2

 

12.5

 

14.0

 

 

 

 

 

 

 

 

 

 

 

kVA/HP x HP x 1000 = STARTING AMPERAGE

 

 

 

 

VOLTS

 

 

 

 

 

 

 

 

EXAMPLE: Calculate the starting amperage required for a 230 V, 1/4

 

HP motor with a motor start code of M.

 

 

 

 

 

 

Volts = 230

HP = 1/4 Using Table, Code M results in kVA/HP = 11.2

11.2 x 1/4 x 1000

= 12.2 A

Starting the motor requires 12.2 amperes.

230

 

 

 

 

 

 

 

 

 

 

 

1Motor Start Code

2Running Amperage

3Motor HP

4Motor Voltage

To find starting amperage:

Step 1: Find code and use table to find kVA/HP. If code is not listed, multiply running amperage by six to find starting amperage.

Step 2: Find Motor HP and Volts.

Step 3: Determine starting amper- age (see example).

Welding generator amperage out- put must be at least twice the motor’s running amperage.

S-0624

10-9. How Much Power Can Generator Supply?

1

2

1Limit Load To 90% Of Generator Output

Always start non-resistive (motor) loads in order from largest to small- est, and add resistive loads last.

2 5 Second Rule

If motor does not start within 5 seconds, turn off power to prevent motor damage. Motor requires more power than generator can supply.

Ref. ST-800 396-A / S-0625

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Contents Processes OM-4418210 597ADescription From Hobart to You Table of Contents Page Fumes and Gases can be hazardous Marks a special safety messageArc Welding Hazards Electric Shock can killEngine Hazards Compressed Air Hazards EMF Information Principal Safety StandardsLES 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 graves’AIR Comprimé peut provoquer des blessures ’EXPLOSION DE LA Batterie peutDES Organes Mobiles peuvent provoquer des blessures LA Chaleur DU Moteur peut pro- voquer un incendieInformation sur les champs électromagnétiques Principales normes de sécuritéDimensions, Weights, And Operating Angles SpecificationsSymbol Definitions Weld, Power, And Engine Specifications100% Duty Cycle at 90 Amperes CC/AC Exceeding duty cycle can damage unit and void warrantyFuel Consumption Duty CycleVolt-Ampere Curves Generator Power CurveInstalling Welding Generator InstallationGrounding Generator To Truck Or Trailer Frame Oil Grounding Generator When Supplying Building SystemsEngine Prestart Checks 13 mm Full Gasoline Open ClosedPut terminals Connecting To Weld Output TerminalsSelecting Weld Cable Sizes 45 m 60 m 70 m 90 m 105 m 120 mControls See Section Operating the Welding GeneratorDescription Of Controls See Section To Stop turn engine switch to OffAmperage Selection Table For Stick Smaw Electrodes 240 V 20 a AC Duplex Receptacle RC1 Generator Power Panel ReceptaclesOperating Auxiliary Equipment Use GFCI-protected extension cordMaintenance Stop engine Servicing Air CleanerClean element by gently tapping on a hard surface Washing PrecleanerWelding TroubleshootingTroubleshooting Generator PowerEngine With proper viscosity oil for operating temperatureStarting difficult Circuit Diagram For Welding Generator Electrical DiagramsSelecting Equipment Generator Power GuidelinesAmperes x Volts = Watts Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Earth ground if supplyingFarm/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 Power Required To Start MotorHow Much Power Can Generator Supply? Single-Phase Induction Motor Starting RequirementsWork like a Pro Typical Connections To Supply Standby PowerCurrent Load Watts Amperes Selecting Extension Cord Use Shortest Cord PossibleWeld current starts when electrode touches work- piece Stick Welding ProcedureStick Welding Smaw Guidelines Striking an Arc Scratch Start Technique Electrode and Amperage Selection ChartStriking an Arc Tapping Technique 10-30 9090 End View of Work Angle Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Positioning Electrode HolderElectrode Movement During Welding Conditions That Affect Weld Bead Shape16 in 30 1.6 mm Tack Welds Butt JointsLap Joint Tee JointPossible Causes Corrective Actions Troubleshooting PorosityTroubleshooting Excessive Spatter Weld TestTroubleshooting Lack Of Penetration Troubleshooting Incomplete FusionTroubleshooting Excessive Penetration Troubleshooting Waviness Of Bead Troubleshooting Burn-ThroughTroubleshooting Distortion 35 36 Parts ListDia Part Description Quantity Mkgs Work like a Pro Page Page Support ServiceHobart Welding Products Contact your Distributor for
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