Miller Electric Big 40 CAT manual Three-Phase Power Connection, Rear Of Panel

Page 45

8-2. Connecting To Optional Three-Phase Generator (CC/CV Models Only)

				. Place Process/Contactor switch
				in Electrode Hot - Stick position
				when using three−phase genera-
	Single-Phase Power Connection	1	2	tor (see Section 7-3).
	Single-Phase Power Connection	1	2	Single-Phase Generator Power
				Single-Phase Generator Power
				1 120/240 V 50 A Receptacle
				RC5
				RC5 is connected to the optional
				three−phase generator and supplies
				60 Hz single-phase power at weld/
				power speed. Maximum output from
				RC5 is 12 kVA/kW. Power available
				at RC5 is reduced when welding.
				2 Circuit Breaker CB7
				Circuit breaker CB7 protects single-
				phase receptacle RC5 and the load
				wires from overload. If CB7 opens, all
				three−phase generator output stops
				and the receptacle does not work.

Three-Phase Power Connection

Y Close panel opening if no connections are made to generator.

	AC	Single	Three
	AC	Phase	Phase
	Output	Phase	Phase
		1	3
	Volts	120/240	240

	Amps	50	36
	KVA/KW	12	15
	Frequency	60 Hz
	Engine Speed	1850 RPM

Lead 42 connects to GROUND stud on front of unit.

Jumper 42 is connected to 90 at factory.

93

Three-Phase Generator Power

YStop engine.

YPower and weld outputs are live at the same time. Discon- nect or insulate unused cables.

.Have qualified person install ac-

cording to circuit diagram and Generator Power Guidelines (see Section 12).

Remove generator power panel mounting screws. Tilt panel forward.

3 Lead 93

Remove plug before inserting leads. Reinstall bushing.

5

Rear Of Panel

914 Lead 92

5 Lead 91

906 Lead 42 (Circuit Grounding Lead)

4	92	7	Lead 90 (Neutral)
		8	Isolated Neutral Terminal

6

7

9

8

91

92

93

240V

120V	1-Phase
120V
	240V
240V	3-Phase
	240V

3

2

12

10

11

Y Close panel opening if no connections are made to generator.

Tools Needed:

9Jumper Lead 42

10Grounding Terminal

Jumper 42 is connected to lead 90 at factory. Jumper 42 may be discon- nected from neutral to meet applica- ble electrical codes.

Lead 42 connects to front panel Ground stud.

11User-Supplied Leads

12Circuit Breaker CB7 User Terminals

Connect user-supplied leads to ter- minals on CB7 and to the isolated neutral terminal and grounding termi- nal as necessary.

.Circuit breaker CB7 protects

single-phase receptacle RC5 and the load wires from overload. If CB7 opens, all three−phase generator output stops and the receptacle does not work.

Reinstall generator power panel.

Ref. 197 399 / 802 332-E

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OM-4406 Page 39

Image 45

Contents OM-4406 ProcessesDescription From Miller to You Table of Contents − Maintenance & Troubleshooting Directives StandardsDeccon111/02 Deccon1sound11/02 Sound Level InformationArc 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 Starting Instructions + −Can cause severe burns. Do Are possible hazards asFalling equipment can cause Serious injury and damageReturn To Table Of Contents − 50 h Std Manufacturer’s Rating Labels For CE ProductsStd CC Models CC/CV ModelsSymbols And Definitions − Specifications Weld, Power, And Engine SpecificationsDimensions, Weights, And Operating Angles Volt-Ampere Curves For CC Models MIG Mode Stick ModeTIG Mode Volt-Ampere Curves For CC/CV ModelsDuty Cycle And Overheating Fuel ConsumptionOptional Three-Phase Generator Curves AC Generator Power Curve12 kVA/kW Single-Phase AC Output No Weld Load 15 kVA/kW Three-Phase AC Output No Weld LoadVolt-Ampere Curve For CC/CV Models In AC TIG Mode Installing Welding Generator See Sections 5-2And − InstallationLocation Grounding Airflow ClearanceUsing Lifting Eye Supporting The Unit Mounting Welding GeneratorMounting Surface To Bolt Unit In PlaceTools Needed 1/2 Installing Exhaust PipeStop engine and let cool Point exhaust pipe in desired diDo not overfill battery cells Activating The Dry Charge Battery If ApplicableRead and follow all instruc ChargerConnecting The Battery Reinstall cover after connecting batteryConnect Negative − Cable Last Engine Prestart Checks Coolant Recovery TankSelecting Weld Cable Sizes Connecting To Weld Output TerminalsSocket Connecting To Remote 14 Receptacle RC14 On CC/CV ModelsFront Panel Controls For CC Models See Section − Operating Welding Generator − CC ModelsDo not switch under load Engine Indicator LightsEngine Starting Controls To Start Do not use etherWeld Control/Arc Condition Information Label Remote Amperage Control On CC Models OptionalExample Set weld controls as shown toReturn To Table Of Contents Front Panel Controls For CC/CV Models See Section − Operating Welding Generator − CC/CV ModelsUse switch to select weld amperage range Voltage/Amperage Adjust Switch And Remote 14 ReceptacleEngine Oil Pressure Light Process/Contactor Switch Settings Process/Contactor Switch On CC/CV ModelsRemote Voltage/Amperage Control On CC/CV Models Optional Example Combination Remote Amperage Control StickExample Combination Remote Amperage Control TIG Volt And 240 Volt Receptacles − Operating Auxiliary EquipmentAt least once a month, run en Open, contact Factory AuthoThree-Phase Power Connection Rear Of PanelClose panel opening if no connections are made to generator Optional Generator Power Receptacles 240 V 15 a AC South African Receptacle RC1Circuit Breaker CB2 Circuit Breaker CB3 Maintenance Label − Maintenance & TroubleshootingEvery 8 h Routine MaintenanceEvery 50 h Every 100 hEvery 1000 h ServiceEvery 2000 h Caterpillar Customer AssistanceBy the warranty Servicing Air CleanerTo clean air filter Do not clean housing with air hoseInspecting And Cleaning Optional Spark Arrestor Muffler Stop engine and let cool. Reinstall cleanout plugTools Needed 3/8 Idle Speed Adjustment Adjusting Engine SpeedWeld/Power Speed Adjustment Engine Speed No LoadServicing Fuel And Lubrication Systems Overload Protection Pre-Start Diagnostic Checks Diagnosing Causes Of Engine Fault ShutdownsDiagnostic Checks While Running Start Engine With No Load AppliedWelding − CC Models TroubleshootingWelding − CC/CV Models Standard Generator Power Optional Three-Phase Generator Power CC/CV ModelsEngine Shutdown switch is released Out Wiring harness and componentsTemperature is too high see Sections 5-7and Air in fuel system. See engine manualCircuit Diagram For CC Welding Generator − Electrical Diagrams215 296-B Circuit Diagram For CC/CV Welding Generator 215 297-B − RUN-IN Procedure WetstackingWelding Generator 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-inHas this symbol − Generator Power GuidelinesSelecting Equipment Grounding Generator To Truck Or Trailer FrameHow Much Power Does Equipment Require? Grounding When Supplying Building SystemsEarth ground if supplying Use ground device as stated Electrical codesApproximate 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 AmperageTypical Connections To Supply Standby Power Current Load Watts Amperes Selecting Extension Cord Use Shortest Cord Possible− Parts List 117 116 103 102 115 FIG 114 105 104 101 120113 108 100 CC only 119 110 109 111 -4 or 85 Fig 51 52Dia Part Description Quantity Dia Part Description Quantity Mkgs 095 Control Box Assembly − CC Models Control Box Assembly − CC/CV Models Control Box Assembly − CC/CV Models -1Item Panel, Front w/Components − CC Models MS1 Panel, Front w/Components − CC/CV Models -1Item Panel, Front w/Components − CC/CV ModelsPC6 192 PLG6 34 36 27 26 Hardware is common Not available unless listedMain Rectifier Assembly -1Item Main Rectifier Assembly Page Support Your distributor also givesFor assistance in filing or settling claims, contact Miller Electric Mfg. CoYour distributor and/or equipment manufacturer’s Transportation Department