Weldmatic 180 | Operator Manual | Model No CP141-1
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Duty Cycle
The term duty cycle indicates the
percentage welding time available at the
rated output current, for each 10 min period
over 4 hours.
The Weldmatic 180 is rated 180 Amps,
10% duty cycle. If the machine is operated
at a reduced welding current, a higher
duty cycle is available. The diagram below
illustrates the appropriate duty cycle rating
for the range of welding currents available
and so allows the maximum welding time
per 10 minute period to be determined.
The power source is protected by in built
over temperature protection devices. These
will operate if the machine is operated in
excess of its current and duty cycle rating. If
this occurs, the fan will continue to run, but
the machine will not deliver welding current
until the unit has cooled sufficiently.
0
1
2
3
4
5
6
7
8
9
10
0
20
40
60
80
100
120
140
160
180
200
M
inut
es
Amps
180 Duty Cycle
