Duty cycle and overheating, Cutting speed, 2. duty cycle and overheating – Miller Electric ICE-100T User Manual

Page 15: 3. cutting speed

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OM-201 872 Page 11

4-2.

Duty Cycle and Overheating

Duty Cycle is percentage of 10
minutes that unit can cut at rated
load without overheating.

If unit overheats, output stops, and
cooling fan runs. Wait fifteen min-
utes for unit to cool. Reduce amper-
age or duty cycle before cutting.

Y

Exceeding duty cycle can
damage unit and void war-
ranty.

Overheating

0

15

A

OR

Reduce Duty Cycle

Minutes

duty1 4/95

230 Volts AC Three-Phase Input Power:

50% Duty Cycle

208 Volts AC Three-Phase Input Power:

40% Duty Cycle

380-575 Volts AC Three-Phase Input Power:

80% Duty Cycle

5 Minutes Cutting

5 Minutes Resting

8 Minutes Cutting

2 Minutes Resting

4 Minutes Cutting

6 Minutes Resting

4-3.

Cutting Speed

The cutting speed curve shows the
rated cutting speed capabilities of
the power source and torch for mild
steel, stainless steel, and aluminum
of various thicknesses.

Y

Exceeding recommended
cutting speeds will cause
rapid erosion of the tip and
electrode.

Rated Cutting Speed vs Material Type & Thickness

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

150

160

170

0.25”

0.375”

0.5”

0.625”

0.75”

1”

1.25”

Material Thickness (Inches)

C

u

tt

in

g

Spee

d

(I

n

ch

es

pe

r

M

in

ut

e)

Aluminum

Stainless Steel

Mild Steel

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