Hobart 180 SD manual Volt-Ampere Curves, Weld Output Terminals And Selecting Cable Sizes

Models: 180 SD

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2-6. Volt-Ampere Curves

Volt-ampere curves show minimum and maximum voltage and amper- age output capabilities of welding power source. Curves of other set- tings fall between curves shown.

AC MODE

DC MODE

 

80

70

60

50

 

 

 

 

 

 

 

VOLTS

 

 

 

 

 

 

 

40

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

10

 

Stick MIN

 

Stick MAX

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

0

50

100

150

200

250

300

350

AMPERES

VOLTS

80

70

60

50

40

30

20

 

 

TIG–MAX

STICK–MAX

 

 

 

 

 

10

TIG–MIN

STICK–MIN

 

 

 

 

 

 

 

0

 

 

 

 

 

0

50

100

150

200

250

AMPERES

ssb1.1 10/91 – ST-188 277 / ST-188 278

2-7. Weld Output Terminals And Selecting Cable Sizes

Y ARC WELDING can cause Electromagnetic Interference.

To reduce possible interference, keep weld cables as short as possible, close together, and down low, such as on the floor. Locate welding operation 100 meters from any sensitive electronic equipment. Be sure this welding machine is installed and grounded according to this manual. If interference still occurs, the user must take extra measures such as moving the welding machine, using shielded cables, using line filters, or shielding the work area.

 

 

 

Total Cable (Copper) Length In Weld Circuit Not Exceeding

 

 

 

100 ft (30 m) Or Less

150 ft

200 ft

250 ft

300 ft

350 ft

400 ft

 

 

(45 m)

(60 m)

(70 m)

(90 m)

(105 m)

(120 m)

 

 

 

 

Weld Output

Welding

10 – 60%

60 – 100%

 

 

 

 

 

 

Duty

Duty

 

 

10 – 100% Duty Cycle

 

Terminals

Amperes

 

 

 

Cycle

Cycle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100

4

4

4

3

2

1

1/0

1/0

 

150

3

3

2

1

1/0

2/0

3/0

3/0

Electrode

 

 

 

 

 

 

 

 

 

Work

200

3

2

1

1/0

2/0

3/0

4/0

4/0

 

 

 

 

 

 

 

 

 

 

250

2

1

1/0

2/0

3/0

4/0

2-2/0

2-2/0

Ref. ST-802 238

 

 

 

 

 

 

 

 

 

Weld cable size (AWG) is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere.

S-0007-D

 

 

 

 

 

 

 

 

OM-355 Page 11

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Hobart 180 SD manual Volt-Ampere Curves, Weld Output Terminals And Selecting Cable Sizes