Lincoln Electric FLEXTEC 450 CE - Manual (Page 19)

B-2 OPERATION B-2
FLEXTEC™ 450 CE
PRODUCT DESCRIPTION
The FLEXTEC™ 450 CE is a multi-process CC/CV
DC inverter and is rated for 450 amps, 38 volts at a
60% duty cycle. The Flextec is intended for both fac-
tory and field operation. It comes in a compact,
rugged case that is designed for portability and out-
door use with an IP23 environmental rating. The user
interface of the FLEXTEC™ 450 CE is simple and
intuitive. Weld modes are selected by a 4 position
selector switch. Volts and Amps are displayed on an
easy to view LED display, and the amps and volts are
set by a large output control knob. A hot start toggle
selector switch and an arc control knob allow for finer
tuning of the welding arc. The FLEXTEC™ 450 CE
operates on 380V, 400V, or 415V 50hz or 60hz
power.
DUTY CYCLE
The FLEXTEC™ 450 CE is capable of welding at a
100% duty cycle (continuous welding) at 400 amps
rated output. The 60% rating is 450 amps base off of
a 10 minute cycle - 6 minutes on time and 4 minutes
off time. The maximum output of the machine is 500
amps.
The FLEXTEC™ 450 CE is also rated for Desert Duty,
elevated temperature operation, in a 55°C(131°F)
ambient. The machine is output de-rated for this
application.
DESIGN FEATURES
• Severe Duty Design for outdoor use (IP23 rating).
• Passive Power Factor Correction – reliably gives
95% power factor for lower installation costs.
• 89% Efficiency rating – reduces electrical utility
costs.
• Simple user interface - designed with the operator in
mind. Getting setup for the weld is several clicks
away and even the most novice welder can be confi-
dent he is setup properly.
• F.A.N. (fan as needed). Cooling fan runs when the
output is energized and for a 5 minute cool down
period after output is disabled.
• Thermal protection by thermostats with Thermal
Indicator LED.
• Error Codes display on LED screen for ease of trou-
ble shooting.
• Electronic over current protection.
• Input voltage misconnection protection.
• Utilizes digital signal processing and microprocessor
control.
• VRD™ Voltage Reduction Device - Enable this func-
tion for reduced OCV in CC modes for added safety.
OPEN CIRCUIT
VOLTAGE
INPUT VOLTAGE
OUTPUT VOLTAGE
INPUT CURRENT
OUTPUT CURRENT
PROTECTIVE
GROUND
WARNING or CAUTION
Explosion
Dangerous Voltage
Shock Hazard
GRAPHIC SYMBOLS THAT
APPEAR ON THIS MACHINE
OR IN THIS MANUAL
U0
U1
U2
I1
I2