Section 1 - Specifications; Volt-Ampere Curve And Duty Cycle Chart - MAC TOOLS MW150K Owner's Manual

Specification
Type Of Output
Rated Weld Output
Type Of Input Power
Input Amperes At Rated Output
KVA/KW Used At Rated Output
Max. Open-Circuit Voltage
Control Circuit Voltage At Gun
Welding Processes
Speed Range
Wire Diameter Range
Overall Dimensions
Weight
Welding Gun
Rated Output (Air Cooled)
Cable Length

1-1. Volt-Ampere Curve And Duty Cycle Chart

CAUTION
USING GUN BEYOND DUTY CYCLE RATING can damage gun.
Do not use gun beyond rated amperage when using CO
Use gun at 30% duty cycle when using mixed shielding gas.
OM-154 500 Page 1
SECTION 1 – SPECIFICATIONS
Table 1-1. Welding Power Source
Direct Current/Constant Voltage (DC/CV)
120 Amperes, 21 Volts DC, 30% Duty Cycle
Single-Phase; 60 Hz; At 230 Volts AC
20A
4.7 kVA/3.9 kW
32 Volts DC
24 Volts DC
Gas Metal Arc (GMAW) And Flux Cored Arc Welding (FCAW)
47 To 690 ipm (1.2 To 17.5 mpm)
.023 To .035 in (0.58 To 0.89 mm)
Length: 27 in (686 mm); Width: 12 in (305 mm); Height: 22-1/2 in (571 mm)
Net: 117 lb (53 kg); Ship: 120 lb (54 kg)
160 Amperes At 60% Duty Cycle Using CO
10 ft (3 m)
shielding gas.
2
Figure 1-1. Volt-Ampere Curve And Duty Cycle Chart
Description
Shielding Gas
2
The volt-ampere curves show the
minimum and maximum voltage
and amperage output capabilities of
the welding power source. Curves
of other settings fall between the
curves shown.
Duty cycle is how long the unit can
operate within a ten minute period
without causing overheating or
damage.
This unit is rated at 30% duty cycle
allowing welding 3 minutes out of
every 10 minutes.
This gun is rated at 60% duty cycle
when using CO
30% when using mixed shielding
gas.
ssb1.1 10/91 – SB-124 625 / sb1.3 10/91 – SB-124 624
wfwarn8.1 10/91
shielding gas and
2