Priate leads. see, Table f.1, Troubleshooting & repair – Lincoln Electric INVERTEC V250-S User Manual

Page 45: Auxiliary transformer test (continued)

F-13

TROUBLESHOOTING & REPAIR

F-13

7. If the correct test voltages are pre-

sent the auxiliary transformer is good.

8. If any of the voltages are missing or

very low, with the proper primary
voltage applied, the auxiliary trans-
former may be faulty. Replace.

9. If the auxiliary transformer tests good

but does not function when connect-
ed to the V250-S check the harness
wiring to the auxiliary transformer.
See wiring diagram.

AUXILIARY TRANSFORMER TEST (continued)

INVERTEC V250-S

Return to Section TOC

TEST POINT

EXPECTED VOLTAGE

H1 (1J7)

H2 (4J7)

200 - 208VAC

H1 (1J7)

H4 (3J7)

380 - 415VAC

H1 (1J7)

H5 (6J7)

440 - 460VAC

RED LEAD (1J1)

RED LEAD (3J1)

18VAC (SECONDARY)

On Control Board

TABLE F.1 Auxiliary Transformer Test Points