Hobart Welding Products AIRFORCE OM-279 - Manuel (Page 13)

OM-279 Page 9
SECTION 2 – INSTALLATION
2-1. Specifications
Model
Amperes Input at Rated Load
Output 60 Hz Type of Plasma Rated
Rated
Cutting
Maximum
Open-
Circuit Model
200 V 230 V 460 V 575 V KVA KW
Output Gas Output
Cutting
Capacity
Circuit
Voltage
DC
Single-
Phase
42.30
(3.40*)
36.80
(2.95*)
18.40
(1.50*)
––
8.49
(0.68*)
6.55
(0.20*)
Direct
Current, Air Or
50 A @
110 Volts
0.7 in
3-Phase ––
18.40
(2.13*)
9.20
(1.07*)
7.40
(0.85*)
7.32
(0.85*)
6.60
(0.32*)
Straight
Polarity
(DCEN)
Nitrogen
Only
110 Volts
DC, 60%
Duty Cycle
(18 mm)
At 10 IPM
280
*While idling
2-2. Dimensions And Weight
C
Dimensions
A 36-3/4 in (934 mm)
B 24-1/2 in (622 mm)
C 21 in (533 mm)
A
Weight
A
Single-Phase Models: 147 lb (66 kg)*
Three-Phase Models: 168 lb (76 kg)*
Ref. ST-801 454-B
B
*Without Torch
6 Minutes Cutting 4 Minutes Resting
2-3. Duty Cycle And Overheating
Duty Cycle is percentage of 10 min-
utes that unit can cut 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 cutting.
Y Exceeding duty cycle can
damage unit and void war-
ranty.
60% Duty Cycle
Overheating
0
15
A
OR
Reduce Duty Cycle
Minutes
duty1 4/95