TIG 400STG
3-Phase DC TIG/MMA/Gouging Inverter
Industry-first Silicon Carbide welding inverter operating at 50kHz. Delivers 100% duty cycle at 400A with multi-process capability including arc gouging and cellulose electrode applications, 85% efficiency, and 100m remote control for heavy-duty industrial operations.
Silicon Carbide Technology Overview
Advanced SiC Power Electronics
Integrating next-generation Silicon Carbide semiconductor technology to deliver superior performance, enhanced efficiency, and compact power density in professional welding systems.
Engineering Excellence
Developing advanced welding systems through systematic innovation methodologies, precision engineering practices, and comprehensive technical validation protocols that exceed industry performance benchmarks.
Manufacturing Precision
Operating state-of-the-art production facilities with integrated quality management systems, advanced automation technologies, and rigorous process controls ensuring consistent product excellence.
Global Distribution Network
Delivering comprehensive equipment solutions through strategic logistics infrastructure, providing expedited international shipping, technical consultation services, and dedicated customer support worldwide.
| Parameter | Unit | Specification |
|---|---|---|
| Power Supply | ||
| Frequency | Hz | 50 |
| Rated Input Voltage | V | 3-Phase 380V AC |
| Input Voltage Range | V | 320 ~ 415 |
| Rated Input Capacity | kVA | 17 |
| Rated Input Current | A | 25.8 |
| Output Characteristics | ||
| No-Load Output Voltage | V | 70 |
| TIG Welding Current Range | A | 10 ~ 400 |
| Manual Arc Welding Current Range | A | 0 ~ 400 |
| Performance Specifications | ||
| Rated Duty Cycle (at 40°C) | % | 400A @ 100% |
| Efficiency (η) | % | 85 |
| Power Factor (Cosφ) | - | 0.8 |
| Control Parameters | ||
| Arc Starting Current | A | 0 ~ 400 |
| Force Current | A | 0 ~ 400 |
| Decay Time | s | 0 ~ 8 |
| Technology & Features | ||
| Technology | - | Silicon Carbide (SiC) Technology @ 50kHz |
| Welding Process | - | DC TIG / MMA |
| TIG Ignition Methods | - | High-Frequency TIG / Scratch TIG |
| Electrode Support | - | Cellulose Electrodes (CEL) / All-Position Welding |
| Material Compatibility | - | Carbon Steel, Low Alloy Steel, Stainless Steel |
| Hot Start | - | 100% Arc Ignition |
| Arc Force | - | Adjustable for All Positions |
| Remote Control Distance | m | 100 |
| General Features | ||
| Protection | - | Overheat, Overcurrent, Short-Circuit Protection |
| Cooling System | - | Air Cooling |
| Generator Compatible | - | YES |
| Voltage Fluctuation Tolerance | - | YES |
| Enclosure/Standards/Approvals | ||
| Insulation Class | Grade | H |
| Protection Class | IP | IP23S |
| Physical Specifications | ||
| Dimensions (L×W×H) | mm | 512.5 × 220 × 398 |
| Net Weight | kg | 19.2 |
| Gross Weight | kg | 21 |
Product Overview
SILICON CARBIDE (SiC) TECHNOLOGY @ 50kHz · 100% DUTY CYCLEAdvanced Silicon Carbide (SiC) welding system operating at 50kHz frequency with 100% duty cycle at 40°C. Specially designed for harsh industrial environments with friendly user operation interface and stable arc for manual welding. Industry-first SiC implementation delivers high-performance DC TIG and stick welding for alloy fabrication, pipe welding, and workshop maintenance with 400A TIG / 400A MMA output, 85% efficiency, multi-process capability (high-frequency/scratch TIG, MMA), wired remote control functionality, cellulose electrode compatibility, and generator compatibility in a compact 19.2kg configuration (512.5×220×398mm) with optimized dust/water protection.
Industry-First SiC Technology: 400A @ 100% Duty Cycle
400A TIG / 400A MMA at 100% duty cycle (40°C) with 50kHz SiC technology—industry-first Silicon Carbide welding system specially designed for harsh industrial environments enables continuous operation without thermal interruption, 85% efficiency compared to conventional 70-75%, friendly user operation interface with digital display, stable arc for manual welding, 100% arc starting success rate with HF/Scratch TIG, adjustable parameters (arc force, hot start, down-slope time), 2-step or 4-step trigger mode, wired remote control, extra arc force current for deep penetration and perfect vertical down-welding of cellulose electrodes (CEL), 100m remote control capability, generator compatibility (optional), optimized dust/water protection, and lightweight 19.2kg design (512.5×220×398mm) representing 2/3 the size and weight of conventional units.
Target Applications
Harsh industrial environments, alloy fabrication, pipe welding, workshop maintenance, long-distance welding operations, construction projects, manufacturing facilities, and field construction requiring maximum duty cycle and cellulose electrode compatibility.
Core Technology
Silicon Carbide @ 50kHz, 100% duty cycle at 40°C, HF/Scratch TIG with 100% arc starting success rate, adjustable parameters (arc force, hot start, down-slope time), 2-step/4-step trigger mode, digital display, wired remote control, 85% efficiency, 0.8 power factor, optimized dust/water protection.
Protection Systems
Comprehensive overheat, overcurrent, and short-circuit protection. Optimized dust/water protection for harsh industrial field conditions. IP23S rating, Grade H insulation, voltage fluctuation tolerance, generator compatibility (optional).
Key Features
Industry-first Silicon Carbide welding technology for harsh industrial environments
Silicon Carbide Technology
Industry-first SiC semiconductors operating at 50kHz—superior switching performance, 85% efficiency compared to conventional 70-75%, extremely low energy loss, reduced thermal output, compact architecture.
100% Duty Cycle at 400A
Continuous operation at 400A without thermal interruption at 40°C ambient temperature. Maximizes productivity and eliminates downtime in extended welding operations and high-intensity tasks.
Harsh Industrial Environment Design
Specially designed for harsh industrial environments with optimized dust/water protection, robust inner structure, and unconditional usage for optimum welding results under severe conditions.
Friendly User Operation Interface
Intuitive user interface with digital display for voltage and current monitoring, easy parameter adjustment, and simplified operation for enhanced productivity and reduced training time.
Stable Arc for Manual Welding
High-frequency inverter technology ensures stable current and soft arc for manual welding. Maintains consistent arc performance even during power fluctuations or arc length changes with beautiful weld formation.
High-Performance DC TIG & Stick Welding
Provides high-performance DC TIG and stick welding for alloy fabrication, pipe welding, and workshop maintenance with professional-grade arc characteristics and weld quality.
HF/Scratch TIG: 100% Arc Starting Success Rate
High-frequency and scratch TIG ignition with 100% arc starting success rate ensures reliable arc initiation every time without failed starts or electrode contamination.
Adjustable Parameters
Comprehensive parameter adjustment: arc force (0-400A), hot start (0-400A), and down-slope time (0-8s) provide precise control for various welding conditions and applications.
2-Step or 4-Step Trigger Mode
Selectable 2-step or 4-step trigger mode for TIG welding provides operational flexibility for different welding techniques and operator preferences.
Digital Display
Dual digital displays for voltage (V) and current (A) provide clear, precise readouts for accurate monitoring and control during welding operations.
Wired Remote Control
Wired remote control enables flexible operation up to 100 meters with remote adjustment of welding current, force current, and down-slope time for enhanced process control.
Generator Compatibility (Optional)
Optional generator compatibility with voltage fluctuation tolerance (320-415V input range) ensures reliable operation with generator power sources for field construction applications.
Multi-Process Capability
High-frequency TIG (10-400A), scratch TIG (default on startup), and MMA welding (0-400A). Supports cellulose electrodes (CEL) and all-position welding for operational flexibility.
Hot Start Function
Ensures 100% arc ignition with guaranteed reliable arc initiation. Adjustable hot start (0-400A) for all welding positions and stable performance during voltage variations.
Adjustable Arc Force
Brings great performance for all-position welding with independent arc force adjustment (0-400A) for precise control and superior arc characteristics.
Down-Slope Time Control
Adjustable TIG arc down-slope time (0-8s) provides precise control of welding completion phase, preventing crater cracks and ensuring clean weld termination.
Extra Arc Force Current
Ensures deep penetration and brings perfect vertical down-welding of cellulose electrodes (CEL) with superior arc performance and weld quality for demanding applications.
100m Remote Control Capability
Extended remote control capability up to 100 meters enables flexible operation in large work areas with support for remote adjustment of welding parameters.
Long Distance Welding
Suitable for 100m welding operations with full power input ensuring stable arc during long cable welding and voltage fluctuation for extended reach applications.
85% Efficiency
Industry-leading 85% efficiency with 0.8 power factor reduces energy consumption and operational costs. SiC technology delivers superior performance with 17kVA input capacity.
Cellulose Electrode Compatibility
Specially designed for MMA welding with cellulose electrodes (CEL) with extra arc force current for deep penetration and perfect vertical down-welding performance.
High-Frequency TIG Ignition
Professional high-frequency arc starting delivers clean, non-contact TIG ignition. Activated by pressing TIG torch switch for superior arc stability and control characteristics.
Scratch TIG Capability
Default scratch start method on startup for TIG welding. Alternative for environments where high-frequency ignition may interfere with sensitive electronic equipment.
Lift TIG Process Support
Supports lift TIG process for versatile TIG welding applications and operational flexibility across different welding scenarios and requirements.
Comprehensive Protection
Multi-level thermal monitoring, overcurrent protection, short-circuit safety. IP23S environmental resistance, Grade H insulation for extended operational life and operator safety.
Compact & Lightweight Design
512.5×220×398mm, 19.2kg—2/3 the size and weight of conventional units. SiC technology enables lightweight design while maintaining 400A output capacity and 100% duty cycle performance for easy transport on construction sites and confined spaces.
Standard Quick Connectors
Two Chinese-style 50mm quick connectors (standard) for fast and secure cable connections, reducing setup time and improving efficiency.
Optional Remote Control Box
Optional wired remote control box available for enhanced process control and operational flexibility without being at the machine during welding operations.
M5 Hex Key Included
M5 hex key included (standard) for maintenance and adjustment operations, ensuring convenient servicing and operational readiness.
Material Compatibility
Applications
Silicon Carbide technology for professional industrial operations and harsh environments
Alloy Fabrication & Pipe Welding
- Alloy fabrication
- Pipe welding
- Workshop maintenance
- Structural steel work
- Precision TIG welding
Ironwork & Metal Fabrication
- Ironwork production
- Door and window processing
- Fence manufacturing
- Metal enclosure production
- Steel furniture manufacturing
Construction & Installation
- Building installation
- Interior decoration
- Renovation projects
- Equipment installation
- Field construction welding
Maintenance & Repair Services
- Machinery maintenance
- Agricultural equipment repair
- Motorcycle repair
- Automotive maintenance
- Industrial machinery service
Application Scenarios: Harsh industrial environments, alloy fabrication, pipe welding, workshop maintenance, long-distance welding operations (up to 100m), all-position welding requirements, cellulose electrode (CEL) applications, generator power supply situations. This welding machine series is designed for professional industrial applications, particularly suitable for high-quality welding requirements under severe conditions with optimized dust/water protection and friendly user operation interface.
Silicon Carbide Technology Advantages
Industry-first SiC implementation in welding equipment
50kHz Operating Frequency
SiC operates at 50kHz—substantially higher than conventional IGBT technology (20-30kHz) delivering superior switching performance, extremely low energy loss, and enhanced efficiency.
85% Efficiency Rating
SiC delivers 85% efficiency compared to conventional 70-75% IGBT efficiency—substantial energy optimization, reduced operational costs, and improved welding machine efficiency.
Reduced Thermal Output
Superior thermal conductivity and lower switching losses result in reduced heat generation, enabling 100% duty cycle in lightweight 19.2kg configuration without thermal interruption.
Compact Architecture
Higher frequency operation enables reduced transformer and component dimensions—lightweight 19.2kg design (512.5×220×398mm) at 400A output capacity, 2/3 the size and weight of conventional units.
Optimized Power Efficiency
Lower conduction and switching losses translate to improved efficiency, reduced thermal output, and optimized 17kVA input capacity for 400A output with reduced energy consumption.
Industry-First Implementation
Industry-first implementation of SiC technology in professional welding equipment—establishing new performance standards for industrial welding systems with advanced iterative product design.
Technical Innovation: The TIG 400STG represents an industry-first implementation of Silicon Carbide technology in welding equipment. SiC semiconductors operating at 50kHz (compared to conventional 20-30kHz) deliver 85% efficiency (versus typical 70-75%) with extremely low energy loss, enabling 100% duty cycle at 400A in a 19.2kg configuration (2/3 the size and weight of conventional units). Specially designed for harsh industrial environments with friendly user operation interface, stable arc for manual welding, and high-performance DC TIG and stick welding for alloy fabrication, pipe welding, and workshop maintenance. This represents an advanced iterative product design establishing new performance standards for professional industrial welding operations.
Summary
The TIG 400STG features industry-first Silicon Carbide (SiC) technology—advanced SiC-powered welding system operating at 50kHz frequency with extremely low energy loss. Specially designed for harsh industrial environments with friendly user operation interface and stable arc for manual welding. Provides high-performance DC TIG and stick welding for alloy fabrication, pipe welding, and workshop maintenance. Delivers 400A TIG / 400A MMA at 100% duty cycle (40°C) with continuous operation capability without thermal interruption. HF/Scratch TIG with 100% arc starting success rate ensures reliable arc initiation every time. Adjustable parameters: arc force (0-400A), hot start (0-400A), and down-slope time (0-8s) provide comprehensive control. 2-step or 4-step trigger mode for TIG welding operational flexibility. Digital display with dual voltage and current readouts for precise monitoring. Wired remote control enables flexible operation up to 100 meters with remote parameter adjustment. Generator compatible (optional) with voltage fluctuation tolerance (320-415V range). Multi-process functionality: high-frequency TIG (10-400A), scratch TIG (default on startup, activated by pressing TIG torch switch for high-frequency TIG), and MMA welding (0-400A). Specially designed for MMA welding with cellulose electrodes (CEL) with extra arc force current ensuring deep penetration and perfect vertical down-welding performance. Lift TIG process support for versatile TIG welding applications. 85% efficiency (Cosφ=0.8) compared to conventional 70-75% with 17kVA input capacity. High-frequency inverter technology ensures stable current and soft arc, maintaining consistent arc performance even during power fluctuations or arc length changes with beautiful weld formation. Optimized dust/water protection for harsh industrial field conditions with special inner structure ensuring robust design with unconditional usage for optimum welding results. Comprehensive overheat, overcurrent, and short-circuit protection systems. IP23S rating, Grade H insulation, air cooling system. Compact 512.5×220×398mm, 19.2kg configuration—2/3 the size and weight of conventional units for easy transport on construction sites and confined spaces. Two Chinese-style 50mm quick connectors (standard), M5 hex key included (standard), optional wired remote control box available. Compatible with carbon steel, low alloy steel, stainless steel, and cast iron. Optimized for alloy fabrication, pipe welding, workshop maintenance, ironwork production, door and window processing, fence manufacturing, metal enclosure production, steel furniture manufacturing, building installation, interior decoration, renovation projects, equipment installation, machinery maintenance, agricultural equipment repair, motorcycle repair, automotive maintenance, and industrial machinery service. Suitable for harsh industrial environments, long-distance welding operations, all-position welding requirements, cellulose electrode (CEL) applications, and generator power supply situations. Industry-first iterative product delivering superior performance for professional industrial welding operations under severe conditions.
Industry-First SiC Technology: 400A @ 100% Duty Cycle
Industry-first Silicon Carbide welding system delivers 400A TIG / 400A MMA at 100% duty cycle with 50kHz operation—specially designed for harsh industrial environments with friendly user operation interface, stable arc for manual welding, high-performance DC TIG and stick welding for alloy fabrication, pipe welding, and workshop maintenance. Advanced SiC technology enables continuous operation without thermal interruption, 85% efficiency compared to conventional 70-75%, HF/Scratch TIG with 100% arc starting success rate, adjustable parameters (arc force, hot start, down-slope time), 2-step/4-step trigger mode, digital display, wired remote control, generator compatibility (optional), extra arc force current for cellulose electrode (CEL) applications, 100m remote control capability, optimized dust/water protection, and lightweight 19.2kg design (2/3 the size and weight of conventional units) for professional industrial welding operations under severe conditions.
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Core Advantages
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Advanced Technology
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Key Benefits
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