Design and function
Tables of current carrying capacity
099-008232-EW501
26.05.2020
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5.8 Tables of current carrying capacity
The indicated gas flow rates are guide values. Depending on the application, other values may
lead to a better welding result. The plasma gas must stream out with a minimum quantity depen-
dent on the nozzle aperture and current. If the quantity falls below the minimum, damage to the
welding torch can be expected.
Figure 5-8
Item Symbol Description
0
1
Plasma gas quantity
2
Plasma nozzle size
The plasma nozzles and electrodes have a limited current consumption capacity that should not be
exceeded. The limit values are listed in the table below:
5.8.1 Current carrying capacity and plasma gas quantities for standard nozzle 18 mm /
0.71 inch
Guide values for the current-carrying capacity of PHW 100 plasma nozzles, electrode at the negative po-
le, electrode diameter 1.0, 1.5, 2.4 mm / 0.04, 0.06, 0.09 inch.
The plasma gas used is generally Argon.
Diameter of plasma nozzles
Amount of plasma
gas
Electrode diameter
Current
0.5 mm / 0.02 inch
0.1-0.2 l/min
0.03-0.05 gal/min
1.0/1.5 mm / 0.04/0.06 inch
8 A
0.6 mm / 0.02 inch
1.0/1.5 mm / 0.04/0.06 inch
10 A
0.8 mm / 0.03 inch
0.2-0.3 l/min
0.05-0.08 gal/min
1.0/1.5 mm / 0.04/0.06 inch
20 A
1.0 mm / 0.04 inch
1.0/1.5 mm / 0.04/0.06 inch
25 A
1.2 mm / 0.05 inch
1.5 mm / 0.06 inch
30 A
1.4 mm / 0.06 inch
1.5 mm / 0.06 inch
40 A
1.6 mm / 0.06 inch
0.25-0.4 l/min
0.07-0.11 gal/min
1.5 mm / 0.06 inch
50 A
1.8 mm / 0.07 inch
1.5 mm / 0.06 inch
60 A
2.0 mm / 0.08 inch
1.5/2.4 mm / 0.06/0.09 inch
70 A
2.2 mm / 0.09 inch
0.3-0.5 l/min
0.08-00.13 gal/min
1.5/2.4 mm / 0.06/0.09 inch
80 A
2.4 mm / 0.09 inch
1.5/2.4 mm / 0.06/0.09 inch
85 A
2.6 mm / 0.10 inch
1.5/2.4 mm / 0.06/0.09 inch
90 A
3.0 mm / 0.12 inch
0.4-0.6 l/min
0.11-0.16 gal/min
1.5/2.4 mm / 0.06/0.09 inch
100 A
3.2 mm / 0.13 inch
1.5/2.4 mm / 0.06/0.09 inch
100 A