ASPECT 375 AC/DC
TIG WELDING MACHINE
Advanced
Technology
Made Simple.
A quality weld is always important. In some industries
and applications, lives may even depend on it. If this is
the challenge you face every day, choose a TIG welding
machine that meets the demanding quality standards of
the aerospace, motorsports, shipbuilding, education and
fabrication industries.
The Aspect® 375 is the perfect choice for mission critical
welds, especially on applications that must stand up to the
most rigorous testing requirements.
Base Model Shown (K3945-1)
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Auto or Manual: The Choice is Yours
Effortless arc control Customization when you need it Processes »
Stick, TIG
Extremely fast arc response and stability for AC Wave Shape control enables you to customize the
the smoothest and most efficient weld possible. arc for critical aluminum welding requiring: Applications »
»» A higher degree of penetration on thicker materials. Aerospace, Motorsports, Shipbuilding,
Simplicity when you want it »» Increased cleaning action in breaking through heavy
Education, Fabrication
Activate Intellistart™ technology to automatically provide for oxide layers. Output »
softer starts and minimal distortion on thinner materials »» Narrower arc profile enhancing control around corners
and hotter starts required for thicker materials. Optional AC and other tight configurations.
Auto Balance® technology offers simplicity by automatically Input »
providing the optimal mix of cleaning and penetration when
welding aluminum.
Product Number »
Max Cleaning • K3945-1 Base Model
• K3946-2 Ready-Pak®
Max Penetration
AC Auto Balance®
Amperage Set Point
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Aspect 375
Controls »
1. Polarity
2. Process
- High Frequency TIG
- Touch Start TIG
- Stick - Soft Mode
- Stick - Crisp Mode
3. Output
- 2 Step 1
6
- 4 Step
- ON 2
4. AC Wave Shape 7
- AC Auto Banance® 3
- AC Frequency
- AC Balance 4 8
- EP/EN Offset
5. Sequencer
- Pre Flow 5 9
- Starting Amperage
- Initial Slope
- Amperage
- Final Slope
- Finishing Amperage
- Postflow
- Percent Peak Current (When Pulse Active)
- Pulses Per Second (When Pulse Active)
- Background Current (When Pulse Active)
6. Memory Settings
7. Amperage/Exit Button
8. Encoder Knob
9. Pulse
Ready-Pak
(shipped fully assembled)
Aspect
ACCESSORIES Product Number (K3946-2)
CoolArc 47 Water Cooling System K3950-1 •
Inverter Cart K3949-1 •
20H-320-25R Water Cooled TIG Torch with 25 ft. (7.6m) cable assembly K4168-2 •
Zippered Torch Cable Cover - 25 ft. (7.6 m) K918-4 •
Twist Mate Torch Adapter - for Water Cooled TIG Torch
™
K1622-5 •
Parts Kit for 20H-320-25R Water Cooled TIG Torch - contains: long back cap, 1/16 in., 3/32 in., 1/8 in. collets, 1/16 in., 3/32 in., 1/8 in. collet bodies, KP510 •
1/16 in., 3/32 in., 1/8 in. 2% Ceriated tungsten, and three Alumina nozzles (5/16 in., 3/8 in., 7/16 in. orifices)
One Gallon of Low Conductivity Coolant (Two Gallons included Included with Ready-Pak) KP4159-1 •
Foot Amptrol with 25 ft. (7.6 m) cable assembly
™
K870 •
Gas Regulator/Flowmeter and 10 ft. (3.0 m) Hose Kit 3100211 •
15 ft. Work Lead Assembly K1803-3 •
Water Cooled TIG Torch Quick Connect Fitting for Cool Arc 47 9ST14557-27 •
• Included
Aspect 375 Ready-Pak with
Foot Amptrol™ Shown (K3946-2)
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PRODUCT SPECIFICATIONS
Input Current Net
Product Product Input Rated Output @ Rated Output Output HxWxD Weight
Name Number Power Current/Duty Cycle (208/230/400*/460/575) Range in (mm) lb (kg)
Aspect 375 K3945-1 1 & 3 Phase 3 Phase 3 Phase 3 Phase: 21 x 11.8 x 25.5 105
200-600/50/60 GTAW 350A/24/30% 30% DC GTAW 32/29/17/15/12 2-375A (533 x 300 x 648) (47.6)
GTAW 250A/20/100% 100% DC GTAW 19/17/10/9/7
SMAW 350A/34/30% 30% DC SMAW 46/41/24/21/17
Aspect 375 K3946-2 SMAW 250A/30/100% 100% DC SMAW 29/26/15/13/10 1 Phase: 47 x 23 x 45 290
Ready-Pak® Pkg. 2-250A (1,194 x 584 x 1,143) (132)
1 Phase 1 Phase
GTAW 240A/19.6/30% 30% DC GTAW 32/27/17/15/12
GTAW 180A/17.2/100% 100% DC GTAW 21/19/11/9/7
SMAW 240A/29.6/30% 30% DC SMAW 47/43/25/21/17
SMAW 180A/27.2/100% 100% DC SMAW 33/30/17/15/12
*Includes 380 to 413 V
AC WAVE SHAPE CONTROLS
Setting Range Results
AC Frequency 40-400 Hz A lower frequency results in a wider bead. A higher frequency results in a more focused bead.
AC Balance control 35-99% (EN%) A lower AC Balance (EN%) results in an arc with increased cleaning action. A higher AC Balance (EN%) results in an arc with higher penetration.
Electrode Positive (EP) and 2-375 Amps EP A higher Electrode Positive (EP) current value results in intensified cleaning action.
Negative Offset (EN)
2-375 Amps EN A higher Electrode Negative (EN) current value results in intensified penetration.
PULSE FUNCTIONS
Setting Range Results
AC Pulse Frequency 0.1-25% of AC output frequency Alternating the current between peak and background helps better manage heat input and minimize material distortion.
setting in pulses per second
Provides for better arc control and faster freezing for uphill welding.
DC Pulse Frequency 0.1-2,000 pulses per second Helps moderate filler metal deposition at low pulse frequencies (less than 10 pulses per second).
AC WAVE FORMS
Setting Results
Soft Square Increased puddle control
Sine A soft sounding arc
Square Faster travel speeds
Triangular Reduced heat input on thinner materials. Also provides for better cleaning on anodized applications
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Base Unit Aspect Ready-Pak
ADDITIONAL ACCESSORIES Product Number (K3945-1) (K3946-2)
TIG
TIG Welding Gloves K2981-M,-L,-XL • •
VIKING™ 2450D K3230-3 • •
Arc Start Switch with 25 ft. (7.6 m) cable assembly K814 • •
Hand Amptrol (Rotary Track Style) with 25 ft. (7.6 m) cable assembly K963-3 • •
Wireless Pedal K4217-1 • •
Parts Kit (KP509) for PTW-18 and PTA-26 series TIG torches KP509 • •
Twist-Mate Adapter for PTA-26 TIG Torch
™
K1622-3 • •
PTA-26 200 AMP Air Cooled TIG Torch with 1pc 25ft. (7.6m) cable K1783-3 • •
20H-320-25R TIG Torch K4168-2 •
Water Cooled TIG Torch Quick Connect Fitting for Cool Arc 47 9ST14557-27 •
Low Conductivity Coolant (1 Gallon) KP4159-1 •
Electrode Holder Kit with Ground Clamp and Twist-Mate™ Adapters K2394-1 • •
TIG Cut Length Consumables See publication C1.10 • •
• Included
• Optional
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C U S TO M E R A S S I S TA N C E P O L I C Y
The business of The Lincoln Electric Company® is manufacturing and selling high quality welding equipment, consumables, and cutting equipment. Our challenge is to meet the needs of our customers and to exceed their expectations. On occasion, purchasers may ask
Lincoln Electric for information or advice about their use of our products. Our employees respond to inquiries to the best of their ability based on information provided to them by the customers and the knowledge they may have concerning the application. Our employees,
however, are not in a position to verify the information provided or to evaluate the engineering requirements for the particular weldment. Accordingly, Lincoln Electric does not warrant or guarantee or assume any liability with respect to such information or advice. Moreover,
the provision of such information or advice does not create, expand, or alter any warranty on our products. Any express or implied warranty that might arise from the information or advice, including any implied warranty of merchantability or any warranty of fitness for any
customers’ particular purpose is specifically disclaimed.
Lincoln Electric is a responsive manufacturer, but the selection and use of specific products sold by Lincoln Electric is solely within the control of, and remains the sole responsibility of the customer. Many variables beyond the control of Lincoln Electric affect the results obtained
in applying these types of fabrication methods and service requirements.
Subject to Change – This information is accurate to the best of our knowledge at the time of printing. Please refer to www.lincolnelectric.com for any updated information.
The Lincoln Electric Company
22801 St. Clair Avenue • Cleveland, OH • 44117-1199 • U.S.A.
Publication E3.117 | Issue Date 12/17
© Lincoln Global, Inc. • All Rights Reserved. www.lincolnelectric.com
