Lincoln Electric SVM 137-A Welding System User Manual


 
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Section E-1 Section E-1
Classic III and IIID
Theory of Operation .............................................................................................................Section E
General Description ...............................................................................................................E-2
Battery, Starter, Engine Alternator and Oil Switch Circuits (Classic III) ................................E-3
Battery, Starter, Engine Alternator and Engine Protection Circuitry (Classic IIID) ................E-4
Engine, Generator Armature and Frame, Alternator Stator and Rotor..................................E-5
Excitation (Flashing)........................................................................................................E-5
Auxiliary and Field Feedback Coils .................................................................................E-5
Interpole and Series Coils...............................................................................................E-5
Current Range Selector ..................................................................................................E-6
Fine Current Adjustment .................................................................................................E-6
Engine Idler Circuit..........................................................................................................E-6
DC Generator Machines........................................................................................................E-7
TABLE OF CONTENTS
-THEORY OF OPERATION SECTION-