Hobart Welding Products OM-947 - Manual (Page 15)

OM-947 Page 11
SECTION 3 − SPECIFICATIONS
3-1. Specifications
Rated Welding
Output
Amperage
Range
Maximum Open-
Circuit Voltage
DC
Amperes Input at
Rated Load Output
115 V, 60 Hz, Single-
Phase
KVA KW
Weight
W/ Gun
Overall
Dimensions
90 A @ 19 Volts DC,
20% Duty Cycle
63 A @ 21 Volts DC,
20% Duty Cycle*
30 − 125 29
20
15*
2.90
2.20*
2.50
1.77*
50 lb
(22.7 kg)
Length: 16-7/8 in
(429 mm)
Width: 9-7/8 in
(251 mm)
Height: 12-1/8 in
(308 mm)
Wire Type
And Dia
Flux Cored Solid/
Stainless**
Wire Feed Speed Range
.030 − .035 in
(0.8 − 0.9 mm)
.024 − .030 in
(0.6 − 0.8 mm)
0 − 500 IPM (0 − 13 m/min) At No Load
0 − 415 IPM (0 − 11 m/min) Feeding Wire
* CSA Rating
** When shielding gas is required, MIG conversion kit 195 158 must be installed.
3-2. Duty Cycle And Overheating
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
If unit overheats, thermostat(s)
opens, output stops, and cooling
fan runs. Wait fifteen minutes for
unit to cool. Reduce amperage or
duty cycle before welding.
NOTICE − Exceeding duty cycle
can damage unit or gun and void
warranty.
Overheating
0
15
A or V
OR
Reduce Duty Cycle
Minutes
duty1 4/95 − 210 517
20% duty cycle at 90 amps
2 Minutes Welding 8 Minutes Resting
Duty Cycle %
Output Amperes
1 4 10 20 40 60 100 2 6 80 8
10
20
40
60
80
100
200
135