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INVERTEC V300-I
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TROUBLESHOOTING & REPAIR
F-60
NOTE: 50 Hz machines may be tested
using 60 Hz power.
Should a machine under test be rejected for
any reason requiring the removal of any
mechanical part that could affect the
machine’s electrical characteristics, or if any
electrical components are repaired or
replaced, the machine must be retested.
RETEST AFTER REPAIR
Input
Single Phase
Three Phase
Volts/Hertz
Max. Amps
Max. Watts
Max. Amps
Max. Watts
220/50 or 60
2.75
425
2.75
425
230/60
3.00
450
3.00
450
440/50 or 60
1.38
425
460/60
1.50
450
380/50 or 60
1.67
425
575/60
—
—
INPUT IDLE AMPS AND IDLE WATTS
Min. Acceptable,
Max. — All Modes
V300-I
V300-PRO
1 phase @ 200A
380V
220/440V
208V
230/460V
575V
—
38V
—
38V
36V
3 phase @ 300A
32V
36V
34V
38V
36V
OUTPUTMINIMUM ACCEPTABLE VOLTS (AT MAXIMUM OUTPUT SETTINGS,
WITH FULL LOAD)
Output
Min. (Max. acceptable), all machines:
CC modes
12A @ 10V.
(GTAW, SOFT, CRISP)
CV modes
20A @ 19V.
(FCAW, GMAW)
MAXIMUM ACCEPTABLE OUTPUT AMPS (AT MINIMUM OUTPUT SETTINGS)
AUXILIARY TRANSFORMER — 50 Hz or 60 Hz
TEST POINTS
RANGE
18 VAC winding to Power Board J9 pins 1 and 2 Welding
17-20 VAC
terminals sw. remote
24 VAC winding to Control Board J2 pin 4 to lead 212
23-26.5 VAC
STANDARD CODES: (Test at Amphenol)
24 VAC with load, measure across pins C and D
22-25 VAC
42 VAC with load, measure across pins I and K
39-44 VAC
115 VAC with load, measure across pins A and J
109-120 VAC
OCV at rated INPUT: V300-PRO, V300-I
60-75V