4-3. Volt-Ampere Curves

 

35

 

 

 

 

 

 

 

30

 

 

 

 

 

 

VOLTS

25

 

 

 

 

 

 

20

 

 

 

 

Range 6

 

 

 

 

 

Range 4 Range 5

 

DC

 

 

 

 

 

 

 

 

 

 

 

15

 

 

 

Range 3

 

 

 

 

 

Range 2

 

 

 

10

 

 

Range 1

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

0

0

50

100

150

200

250

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.

.Ranges 4, 5, and 6 apply to 230 VAC only.

DC AMPERES

ssb1.1 10/91 − 199 212

4-4. MIG Welding Gun Duty Cycle And Overheating

CAUTION

WELDING LONGER THAN RATED DUTY CYCLE can damage gun and void warranty.

Do not weld at rated load longer than shown below.

 

Using gasless flux cored wire reduces gun duty cycle.

warn7.1 8/93

Definition

0

10

Minutes

Duty Cycle is percentage of 10 minutes that gun can weld at rated load without overheating.

.023 To .045 in (0.6 To 1.1 mm)

Hard Or Flux Cored Wires

100% Duty Cycle At 100 Amperes

Using CO2

Continuous Welding

.023 To .045 in (0.6 To 1.1 mm) Hard Or Flux Cored Wires

60% Duty Cycle At 100 Amperes

Using Mixed Gases

6 Minutes Welding

4 Minutes Resting

 

SB1.1 8/93

OM-1330 Page 11

Page 15
Image 15
Miller Electric M-10 Gun, Millermatic DVI manual Volt-Ampere Curves, MIG Welding Gun Duty Cycle And Overheating, Definition