8
SECTION 1
DESCRIPTION
TABLE 1-1. SPECIFICATIONS
POWER SOURCE
251cv
Rated Output
250 Amps @ 30 Volts d.c.
Duty Cycle,
40%
Primary Input, Volts AC
200/230/460; 230/460/575; 220/400(380/415)
Primary Input, Amperes
52/58/31; 58/31/25; 59/34(36/32)
Output Current Range
30 to 300 Amps.
Maximum Open Circuit Volts
36 v.d.c.
PHYSICAL
Net Weight
138 lbs (63 Kg.)
Height
20.9 inches (530 mm)
Width
12.9 inches (330 mm)
Depth
26.1 inches (660 mm)
Fig. 1.1 Duty Cycle Curves
Figure 1.2 Volt/Ampere Curves
% DUTY CYCLE
WELDING
AMPERES
20
25
30
35
40
50
60
70
80
90 100
300
250
200
150
RATED OUTPUT
VOLTS
AMPS
1.7 VOLT/AMPERE CURVES (Figure 1.2)
The Volt/Ampere curves show the output voltage avail-
able at any given output current for the various Voltage
Selector positions.
The actual operating point of load voltage and current is
determined by type of process, electrode, shield gas,
wire feed speed, and operating technique.
