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Invertec® STT ® II

Invertec® STT ® II
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ADVANCED PROCESS WELDERS ® ® Invertec STT II Processes GMAW-STT® Input Power 208/230/460/3/60 Output Range Peak Current: 0-450A Product Number K1525-1 208/230/460/3/60 K1526-1 200-208/220-230/380-415/440-460/3/50/60 K1526-2 200/208/380/400/415/3/50/60 K1527-1 200/220/380/415/440/3/50/60 K1527-2 200/208/380/400/415/3/50/60 Input Current at Rated Output 32/30/16A Weight/Dimensions (H x W x D) 117 lbs. (53 kg) K1560-2 Rated Output Current/Voltage/Duty Cycle 225A/29V/60% 23.2 x 13.2 x 24.4 in. (589 x 336 x 620 mm) STT®-10 Wire Feeder See back for complete specs Featuring Surface Tension Transfer® (STT®) Process. The Invertec® 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. FEATURES Shown: K1525-1 Sheet Metal Fabrication Pipe Root Pass Welding WHAT’S INCLUDED 3 50 PHASE Hz IN CO LN ELECT DC RI K1525-1 Includes: Sense Lead Kit, 25 ft. (7.6 m) Two Year Extended Warranty Available in the U.S.A. and Canada. ISO 9001:2000 14001:2004 THE LINCOLN ELECTRIC COMPANY Publication E4.52 | Issue Date 06/12 © Lincoln Global, Inc. All Rights Reserved. OUTPUT INPUT L APPLICATIONS C 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. Various shielding gases - STT® may be used with various gas blends including 100% CO2 and Argon or Helium blends. Larger diameter wires can typically be used. Good bead control and faster travel speeds - Can replace TIG (GTAW) in many applications without sacrificing appearance or quality. 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. 22801 St. Clair Avenue • Cleveland, OH • 44117-1199 • U.S.A. PH: +1.216-481-8100 • www.lincolnelectric.com

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WHAT IS STT® (SURFACE TENSION TRANSFER®)? STT® (Surface Tension Transfer®) is a controlled GMAW short circuit transfer process that uses current controls to adjust the heat independent of wire feed speed, resulting in superior arc performance, good penetration, low heat input control, and reduced spatter and fumes. For more information see Nextweld® Document NX-2.20 Conventional CV short circuit transfer using CO2 and .045 in. solid wire. STT® using CO2 and .045 in. solid wire. Note reduced spatter and fume. A. STT® produces a uniform molten ball and maintains it until the “ball” shorts to...

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A CLOSER LOOK Using STT® for Open Root welding Open root welding is used for pipe and single-sided plate welding in situations that preclude welding from both sides of the material. This type of welding is common in the petrochemical and process piping industries. Open Root Pass with Stick Electrode Advantages of STT® Open Root • Penetration Control - Provides reliable root pass and complete back bead. Ensures excellent sidewall fusion. Stick welding with cellulose electrodes provides good fusion characteristics, but leaves deep wagon tracks (requiring more labor for grinding), a very...

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KEY CONTROLS STT-II 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. Tailout Control Hot Start Control Peak Current LED Display Peak Current Control Knob 10 Pin Remote Control for Peak and Background Current 14 Pin Wire Feeder Control with 42V/115V Auxiliary Power Sense Lead Connection, [K940-25, 25 ft. (7.6 m) Sense Lead Kit included] Twist Mate™ Output Connectors 42V/115V Circuit Breakers Power Switch Background Current Control Knob Background Current LED Display Wire Mode Switch Wire Diameter Switch 1 2 14 13 3 12 4 11 5 6 7 10 8 9 STT®-10 Control Box 1. Adjust WIRE FEED SPEED to control...

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SYSTEM SELECTION Bench System Invertec® STT® II Power Source/STT® 10 Wire Feeder Top wire feeder user interface and added traction with four roll drive system. • Invertec® STT® II (K1525-1) • STT®-10 Wire Feeder (K1560-2) • Power Source to Feeder Cable (K1758-10) • Drive Roll Kit [KP1505-035S for .035 in. (0.9 mm) wire or KP1505-045S for .040-.045 in. (1.0-1.1 mm) wire] • Magnum® PRO Curve™ 200 Ready-Pak®, 15 ft. (3 m), .035-.045 (0.9-1.1 mm) wire diameter with K466-10 Gun Connector Kit • Work Cable and Work Clamp • Optional K940 Sense Leads STT®-10 Wire Feeder Portable System Invertec®...

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RECOMMENDED ACCESSORIES GENERAL OPTIONS Weld Fume Control Solutions Lincoln Electric offers a wide variety of weld fume control solutions, ranging from portable systems easily wheeled around the shop to shop-wide central systems servicing many dedicated welding stations. Request Publication MC08-70 Inverter and Wire Feeder Cart Rear-wheeled cart includes front casters and no-lift gas bottle platform. Convenient handles allow for easy cable storage while full length side trays store parts and tools. Shipped fully assembled. Small footprint fits through 30 inch door. Order K1764-1 Dual...

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