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2.4 Duty Cycle
The rated duty cycle of a Welding Power Source, is a statement of the time it
may be operated at its rated welding current output without exceeding the
temperature limits of the insulation of the
minute duty cycle period the following exa
Power Source is designed to operate at a
volts. This means that it has been designe
amperage (90A) for 2 minutes, i.e. arc we
period (20% of 10 minutes is 2 minutes). D
minute period the Welding Power Source
Duty cycle is percentage o
load without overheating.
Exceeding duty cycle ca
GMAW (MIG): 20% Duty Cycle at 90 A A C/DC
2.5 Transportation Methods
Electric Shock can kil
DO NOT
conductors
welding power so
Lift unit with handle on top of case. Use handcart or similar device of adequate
capacity. If using a fork lift vehicle, place secure unit on a proper skid before
transporting.
component pa
mple
20% duty cycle, 9
d and built to prov
lding time, out of e
uring the oth
must idle and a
f 10 minutes that unit can
n damage unit a
l.
TOUCH live electric parts. Disconnect input power
from de-energi
zed supply line b
urce.
2‐3
rts. To explain the 10
is used. Suppose a Welding
0 amperes at 18.5
ide the rated
very 10 minute
er 8 minutes of the 10
llowed to cool.
nd void warranty.
efore moving the
weld at rated
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