Lincoln Electric Invertec STT II Technical Specifications

Invertec
Featuring the Surface Tension Transfer
Control Heat Input, Spatter and Fume
The revolutionary STT II power source combines high frequency inverter technology with
advanced Waveform Control Technology™ to provide a better welding solution than
traditional short arc MIG. Unlike CV MIG machines, the STT machine has no voltage control
knob. STT uses current controls to adjust the heat independent of the wire feed speed, so
changes in electrode extension do not affect heat. Low heat input welds can be produced
without overheating or burning through, and distortion is minimized. Spatter and fumes are
reduced because the electrode is not overheated — even when welding with larger
diameter wires and 100% CO 2 shielding gas.
Processes
GMAW-STT
Advantage Lincoln
• Controlled penetration and outstanding heat input control — Ideal
for welding joints with open root, gaps, or on thin material with no
burnthrough.
• Reduced spatter and fumes — Current is controlled to achieve
optimal metal transfer.
• Reduced welding costs — Ability to use 100% CO 2 shielding gas
with larger diameter wires.
• Various shielding gases — STT may be used with various gas blends
of Argon including Helium.
• Good bead control and faster travel speeds — Can replace TIG
(GTAW) in many applications without sacrificing appearance.
• Background and Tailout Current accurately control fine and coarse
heat input for reduced distortion and burnthrough as well as proper
penetration.
• Adjustable Hot Start controls the heat at the start of the weld.
• Manufactured under a quality system certified to ISO 9001
requirements and ISO 14001 environmental standards.
• Three-year Lincoln warranty on parts and labor.
Product Product
Name Number
Invertec K1525-1
STT II
K1526-1
International
K1526-2
International
K1527-1
CE-Approved
K1527-2
CE-Approved
® ®
STT II
TECHNICAL SPECIFICATIONS
Input Rated Output
Power Current/Voltage/Duty Cycle
208/230/460/3/60 225A / 29V / 60%
200A / 28V / 100%
200/220/380/415/ Max. OCV: 85V
440/3/50/60
200/208/380/400/
415/3/50/60
200/220/380/415/
440/3/50/60
200/208/380/
400/415/3/50/60
® (STT) Process
Description
DC
STT
Output
Base Unit Includes
Twist-Mate® Cable Plugs (Qty. 2), STT II Sense Lead Kit, 25 ft. (7.6m)
Recommended General Options
Power Source Remote Output Control, Inverter and Wire Feeder Cart, Dual
Cylinder Kit, STT II Sense Lead Kit, Coaxial Cable, Twist-Mate Cable Plug,
Twist-Mate Cable Receptacle, Twist-Mate to Lug Adapter
Recommended Wire Feeder Options
STT-10 Wire Feeder, LN-742 Wire Feeder, LN-15 Control Cable Model,
Magnum Gun and Cable Assembly, Magnum Connector Kit
Order
K1525-1 STT II 208/230/460/3/60
K1526-1 STT II International 200/220/380/415/440/3/50/60
K1526-2 STT II International 200/208/380/400/415/3/50/60
K1527-1 STT II CE-Approved 200/220/380/415/440/3/50/60
K1527-2 STT II CE-Approved 200/208/380/400/415/3/50/60
Input Current@
Rated Output
32/30/16A
33/30/18/17/16A
36/34/20/19/18A
33/30/18/17/16A
36/34/20/19/18A
MIG WELDERS
3
60 50
Input
Hz Hz
PHASE
Dimensions
Output H x W x D
Range inches (mm)
Peak Current: 23.2 x 13.2 x 24.4
0-450A (589 x 336 x 620)
Background
Current:
0-125A
Publication E4.52 3/05
www.lincolnelectric.com
Weight
lbs. (kg)
117
(53)