Lincoln Electric NA-3S, Service Manual, Page: 8 / 110

TABLE OF CONTENTS
- INSTALLATION SECTION -
NA-3 AND NA-4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section A
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Control Box Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Welding Head Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6
Input Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6
Control Box to Welding Head Connections . . . . . . . . . . . . . . . . . A-6
Power Supply to Control Box Connections . . . . . . . . . . . . . . . . . A-7
NA-3N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7
NA-3S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
NA-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
Power Source Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . . A-9
Figure A.7: Connection of NA-3 (All) to a SF-600 or SF-800,
Types “-O” or “-OF” and M.G. Solid State Field Control . . . . . . A-10
Figure A.8: Connection of NA-3 (Set for Constant Current
Welding) to a SAF-600 or SA-800, Type “-F” and M.G.
Solid State Field Control . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-11
Figure A.9: Connection of NA-3 (All) to an SAN . . . . . . . . . . . . A-12
Figure A.10: Connection of NA-3 (All) to a SAM Motor-Generator
or Engine Driven Welder . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-13
Figure A.11: Connection of NA-3 to R3S-400, 600, or 800 with
Line Voltage Compensator . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14
Figure A.12: Connection of NA-3 to R3S-400, 600, or 800 with
No Line Voltage Compensator . . . . . . . . . . . . . . . . . . . . . . . . A-15
Figure A.13: Connection of NA-3 to Idealarc DC-400 and to
CV/CVI Power Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-16
Figure A.14: Connection of NA-3 to Idealarc DC-1000 and
DC-1500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-17
Figure A.15: Connection of NA-4 (Which Has Rheostat for
Current Control) to an AC-1000 . . . . . . . . . . . . . . . . . . . . . . . A-18
Figure A.16: Connection of NA-4 (Which Has Rheostat for
Current Control) to an AC-1200 . . . . . . . . . . . . . . . . . . . . . . . A-19
Figure A.17: Connection of NA-3 to SAF-600 “F” or SA-800
“F” and M.G. Solid State Field Control and K240 Contactor Kit . A-20
Figure A.18: Connection of NA-3 to Idealarc DC-600 . . . . . . . . A-21
Figure A.19: Connection of NA-3 to Non-Lincoln Power Sources A-22
Section A Section A