Section 4 - Specifications; Specifications; Duty Cycle And Overheating - Bernard Q20 Series Owner's Manual

4-1 Specifications

Air-Cooled MIG Guns for GMAW Welding

4-2 Duty Cycle and Overheating

Duty Cycle is percentage of 10 minutes that unit can weld at rated load without overheating.
Using mixed gases other than CO
Please reference Section 4 — Specifications on page 11 for duty cycle ratings by amperage.
SECTION 4 — SPECIFICATIONS
200 amp gun feeds maximum wire size of 1/16" (1.6 mm)
Duty Cycle Rating:
100%: 200 amp with CO
60% 200 amp with Mixed Gases
300 amp gun feeds maximum wire size of 5/64" (2.0 mm)
Duty Cycle Rating:
100%: 300 amp with CO
60%: 300 amp with Mixed Gases
400 amp gun feeds maximum wire size of 5/64" (2.0 mm)
Duty Cycle Rating:
100%: 400 amp with CO
60%: 400 amp with Mixed Gases
500 amp gun feeds maximum wire size of 3/32" (2.4 mm)
Duty Cycle Rating:
100%: 500 amp with CO
60%: 500 amp with Mixed Gases
600 amp gun feeds maximum wire size of 1/8" (3.2 mm)
Duty Cycle Rating:
100%: 600 amp with CO
60%: 600 amp with Mixed Gases
reduces duty cycle ratings 10-50% depending on gas mixture and welding parameters.
2
Shielding Gas
2
Shielding Gas
2
Shielding Gas
2
Shielding Gas
2
Shielding Gas
2
OM-BTB-2.4 11