Lincoln Electric SVM101-B 3INSTALLATIONA-3, Product Description Electrical Installation, Location

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A-3INSTALLATIONA-3

PRODUCT DESCRIPTION

ELECTRICAL INSTALLATION

The Invertec V300-I is a 300 amp arc welding power source that utilizes single or three phase input power to produce either constant voltage or constant current outputs. The V300-I is designed for 50/60 Hz supply systems. The welding response of the Invertec has been optimized for GMAW, SMAW, TIG and FCAW processes. It is designed to be used with the LN-25 and LN-7 semiautomatic wire feeders.

WARNING

1.The Invertec should be connected only by a quali- fied electrician. Installation should be made in accordance with the U.S. National Electrical Code, all local codes and the information detailed below.

2.When received from the factory, multiple voltage (200/220/380-415/440) machines are internally connected for 440 volt input.

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ELECTRIC SHOCK can kill.

Have an electrician install and ser- vice this equipment.

Turn the input power off at the fuse box before working on equipment.

Do not touch electrically hot parts.

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LOCATION

The Invertec has been designed with many features to protect it from harsh environments. Even so, it is important that simple preventative measures are fol- lowed in order to assure long life and reliable opera- tion.

The machine must be located where there is free cir- culation of clean air such that air movement into the sides and out the bottom and front will not be restricted. Dirt and dust that can be drawn into the machine should be kept to a minimum. Failure to observe these precautions can result in excessive operating temperatures and nuisance shutdown of the Invertec.

3.Single voltage, 575 VAC machines, can only be connected to 575 VAC. No internal reconnection for other input voltages is possible.

4.Initial 208 VAC and 230 VAC operation will require

avoltage panel setup, as will later reconnection back to 460 VAC:

a.Open the access panel on the right side of the machine.

b.For 208 or 230: Position the large switch to 200-230.

For 460: Position the large switch to 380-460.

c.Move the “A” lead to the appropriate terminal.

CAUTION: DO NOT CHANGE SWITCH POSITION WITH INPUT POWER APPLIED. MAJOR DAMAGE WILL RESULT.

INPUT VOLTAGE SETUP

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Keep machine dry. Shelter from rain and snow. Do not place on wet ground or in puddles.

CAUTION

DO NOT ATTEMPT TO POWER THIS UNIT FROM THE AUXILIARY POWER SUPPLY OF AN ENGINE WELDER.

Special protection circuits may operate, causing loss of output.

The supply from engine welders often has exces- sive voltage peaks because the voltage waveform is usually triangular shaped instead of sinusoidal.

If voltage peaks from the engine welder are too high (380v on 230v setting), the input circuits of this machine protecting the filter capacitors, FETS and other components from damage will not be ener- gized.

RECONNECT PROCEDURE

1. BE SURE POWER SWITCH IS OFF.

 

 

 

 

 

. Disconnect input power before

 

 

 

 

 

 

 

 

 

inspecting or servicing machine.

 

 

 

 

 

2. CONNECT LEAD ’A’ TO DESIRED

. Do not operate with wraparound

INPUT VOLTAGE RANGE.

 

 

removed.

440-460V

 

. Do not touch electrically live parts.

 

.

Only qualified persons should install,

 

’A’

380-415V

use or service this equipment.

 

220-230V

IF MACHINE CEASES TO OPERATE (NO METER, NO FAN)

 

200-208V

AND THERE IS NO OTHER KNOWN FAILURE: CHECK FUSE;

 

REPLACE WITH A 3 AMP SLOW BLOW ONLY.

3. POSITION SWITCH TO DESIRED INPUT VOLTAGE RANGE.

 

 

 

 

 

 

 

 

 

VOLTAGE=380-460V

 

 

 

 

 

VOLTAGE=200-230V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

THE LINCOLN ELECTRIC CO . CLEVELAND, OHIO U . S . A .

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S20324

V300-I

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Contents Invertec Safety Electric Shock can kill ARC Rays can burnFumes and Gases can be dangerous Welding Sparks can cause fire or explosion SafetyCylinder may explode if damaged IiiSûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Table of Contents Installation SectionSection A-1 Three Phase Single Phase InstallationProduct Description Electrical Installation 3INSTALLATIONA-3Input Voltage Setup LocationConnection of Wire Feeders to the Invertec Power Input ConnectionSingle Phase Input Three Phase InputRemote Control of Invertec K900-1 DC TIG Starter ConnectionParallel Operation 6INSTALLATIONA-6 Output CablesQuick Disconnect Plugs Section B-1 Operation SectionOperating Instructions OperationDuty Cycle Control Function / OperationFull Range Is Is Very Soft, 10 Is Very Crisp Mode SwitchAuxiliary Power Meter Polarity SwitchSection C-1 Accessories SectionOptions / Accessories AccessoriesSection D-1 Maintenance SectionInput Filter Capacitor Discharge Procedure MaintenanceOverload Protection Preventive MaintenanceFigure D.2 Location of Maintenance Components Section E-1 Theory of Operation SectionInput Line Voltage & Auxiliary Transformer Theory of OperationReturn to Return to Section TOC Precharge & Protection CircuitsFigure E-4 ---SWITCH Circuits & Transformer Switch BoardsFigure E-5 --OUTPUT & Control Circuits Output and Control CircuitsPassive Pulse Width Modulation Minimum OutputMaximum Output Protective Circuits Overload ProtectionThermal Protection Section F-1 Troubleshooting & Repair SectionHOW to USE Troubleshooting Guide Troubleshooting & RepairPC Board Troubleshooting Procedures Additional Information Oscilloscope Warning Input Filter Capacitor CONDITION- INGMatched Parts Department Feeding ProblemsFeeding Problems See Input Rectifier test See Output Diodes test See Switch Board test V300-I Input Filter Capacitor Discharge Procedure 11TROUBLESHOOTING & REPAIRF-11Figure F.I Location of Input Filter Capacitor Terminals Input Filter Capacitor Discharge ProcedureOutput Pilot Circuit Test Test Procedure J2 J4 J3 G2527V300-I Protection Board Output Test Turn Power Switch OFF Test Procedure313 306 J15 275F 311 V300-I Figure F.6 Inserting Probes ProtectionCapacitor Balance Test Static Capacitor Test 912 V300-I Switch Board Test Switch Board Test Switch Board Test Table F.3 Snubber Resistor Test Check Test Result Conclusion Next Test Step Repair Action Snubber Resistor TestOutput Diode Test Output Diode Test Test ProcedureInput Rectifier Test Table F.5 Points StepsProbe Acceptable Meter Reading Overcurrent Protection Current Trigger Test 302 G2527 Control J1 275D Overcurrent Protection Current Trigger TestControl Overvoltage Protection DC Trigger Circuit Test Figure F.16 PC Boards Removed Overvoltage Protection DC Trigger Circuit Test306 275F 309 310 #313 #275D 1J8 #311 1J14 6J6 #3023J8 2J14 1J6 #301 #305Thermal Protection AC Trigger Circuit Thermal Protection AC Trigger Circuit Figure F.20 PC Boards Moved for AccessFigure F.21 Thermal Protection AC Trigger Circuit V300-I Power Board Test Power Board Test Test aTest B Figure F.23 Power Board Test Points Simplified Trigger Circuit Capacitor Removal and Replacement Procedure Procedure Capacitor Removal and ReplacementFigure F.27 -- Removing Capacitor Nuts Figure F.27 Switch Board Removal and Replacement Procedure Procedure Switch Board ReplacementTest After Switch Board or Capacitor Replacement Perform Retest After Repair Test After Switch Board or Capacitor ReplacementOutput Diode Replacement Procedure Output Diode Replacement Procedure 60TROUBLESHOOTING & REPAIRF-60Procedure Diode Modules 61TROUBLESHOOTING & REPAIRF-61OCV at rated Input V300-PRO Retest After RepairOutput Min. Acceptable Max. All Modes V300-I V300-PROSection G-1 Electrical Diagrams Section#0# Wiring Diagram Entire Machine Code 9826 L8657Return Wiring Diagram Entire Machine Code 9827 L8938Wiring Diagram Entire Machine Code 10036 L9299 $ $ Wiring Diagram Entire Machine Code 10037 L9300Section Wiring Diagram Entire Machine Code 10132 L9567Wiring Diagram Entire Machine Code 10133 L9568 Wiring Diagram Code$& $ Wiring Diagram Entire Machine Code 10258 L10189Wiring Diagram Entire Machine Code 10336, 10450 L10205 V300-I Wiring Diagram European# . $ #$ !#$ #! %&$ Schematic Entire MachineSchematic Driver PC Board S20216 Identification PC Board Assembly Driver L8660Schematic Driver PC Board S20799 Description PC Board Assembly DriverSchematic Switch PC Board L8440 CAPACITOR, Cemo 2700P 50V 5% PC Board Assembly Switch L8441Schematic Switch PC Board L10956 Reqd Identification PC Board Assembly Switch L10958-1Schematic Control PC Board G2525 Electrical Diagrams CAPACITOR, Cemo 150P Schematic Protection PC Board M16097 DZ1 PC Board Assembly Protection L7915-2Schematic Power PC Board M16018 VOLT. REG. & Heat Sink Asbly PC Board Assembly Power L8033-7