Lincoln Electric Demo Zone, Operator'S Manual

Page: 14 / 22

B-3
OPERATION
B-3
WELDER OPERATION
DUTY CYCLE
Full output and duty cycle may not be obtained from
all power sources. The output and duty cycle may be
limited by the 40 amp input power limitation of the
Demo Zone. The duty cycle of the power source must
be adjusted to be within the capability of the 40 amp
input supply.
Duty cycle is based upon a ten minute period. A 10%
duty cycle represents 1 minute of welding and 9 min-
utes of idling in a ten minute period.
Some examples of allowable duty cycles of the Demo
Zone are given. If the duty cycle or input currents
exceed the capability of the 40 amp circuit breaker,
the breaker will trip off. For lower output currents, the
duty cycle is extended from what is listed.
V350-PRO
200A at 28v 100% duty cycle 41A input
275A at 31V 10% duty cycle 62A input
Power MIG 255 (machine limited)
200A at 28v 60% duty cycle 37A input
250A at 30v 40% duty cycle 46A input
Pro Cut 55
55A 15% duty cycle 55A input
Square Wave TIG 175
150A 10% duty cycle 65A input
AUXILIARY POWER OPERATION
Duty cycle and maximum current may be less than
rated value if the power sources are powered from the
Ranger 250.
(Refer to Ranger 250 Operator’s Manual).
DEMO ZONE