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TELWIN SUPERIOR TIG 311 DC: Dual Voltage Power and TIG Precision for Professionals
A TIG welder has to adapt to the power supply in the workshop or on the building site and still leave you in control of every detail of the bead. The TELWIN SUPERIOR TIG 311 DC does both. It was designed for professionals who do not accept compromises, and it combines inverter technology, solid construction and controls that are quick to learn.
Tired of depending on which socket happens to be available? The TELWIN SUPERIOR TIG 311 DC solves that with a dual voltage system (230V/400V) that adjusts automatically to the mains it is connected to. Whether the job is precision work on stainless steel parts, structures in carbon steel, or welding titanium, copper or nickel, the machine delivers a stable and clean arc and beads of high quality. It suits specialists in the chemical, food, shipbuilding and automotive industries, and in pipeline fabrication and maintenance work.
At the core of the SUPERIOR TIG 311 DC is a microprocessor that controls all welding parameters and keeps them repeatable and matched to the material and its thickness. Pulsed TIG DC, adjustable slope up and slope down times and the choice of HF or LIFT arc striking give you full control of the process and reduce the risk of distortion and burn-through, especially on thin material. The machine also welds MMA, which makes it useful on a broader set of jobs.
The TELWIN SUPERIOR TIG 311 DC is bought for output, reliability and comfort at work. The accessory set supplied with it (+ACC.) lets you start welding almost as soon as it is unpacked. Telwin control technology keeps the result consistent from one joint to the next.
The Capabilities of the TELWIN SUPERIOR TIG 311 DC 230V/400V + ACC.
Dual Voltage (230V/400V): Flexible Power Supply
You can work wherever the next job takes you. The TELWIN SUPERIOR TIG 311 DC has an automatic voltage recognition system that lets it run without trouble on single-phase 230V mains and on three-phase 400V mains. No transformer and no second welder are needed, one machine adjusts to the infrastructure available.
For a professional this means real flexibility. You can take on work in modern production halls with a 400V supply and use the full power of the machine, then move the welder to a smaller workshop or to a customer site where only a standard 230V socket is available. The PFC system (Power Factor Correction), used in this class of Telwin equipment, also optimizes energy consumption and reduces the disturbance fed back into the mains, which matters on weaker installations and when working from a generator. That function adds mobility, cuts running costs and keeps the machine stable even where the supply is poor.
Precision Within Reach: Advanced TIG DC Welding Functions
The TELWIN SUPERIOR TIG 311 DC is a command centre for the TIG welder. Clean beads come from full control of the arc parameters, and this machine offers it down to the smallest detail. The TIG Pulse function, with adjustable frequency (low values give better control of the weld pool on thicker material, high values give narrower beads and a smaller heat affected zone on thin sheet), adjustable base current and adjustable pulse duty factor, allows precise management of heat input. The effect is less distortion, better penetration and a clean bead face, even on demanding materials such as stainless steel or titanium.
The welder also offers advanced functions such as Bi-Level, which lets the operator switch quickly between two preset welding currents using a button on the torch. That is useful when welding material of varying thickness and when tack welds and filling passes are made without interrupting the process. Full adjustment of the slope up time and the current slope down, and of the gas flow before welding (Pre Gas) and after welding (Post Gas), sets up the start and the end of the bead correctly, protects the tungsten electrode and prevents oxidation of the hot weld pool. The Easy Pulse function simplifies the pulse settings, which helps less experienced users while leaving the full set of adjustments to experts.
Reliability and Output: Construction Made for Professionals
TELWIN has stood for quality and reliability in welding for years, and the SUPERIOR TIG 311 DC continues that line. The machine was built for long and intensive use in hard industrial conditions. The solid metal housing with IP23 protection rating keeps dust and splashing water away from the internal components, so the welder can be used safely in the hall and outdoors under a roof.
A high duty cycle (for example 300A @ 35% at 400V) means the welder can run for long periods at high settings without the risk of overheating, which keeps production continuous and orders on time. The cooling system with its efficient fan switches on when needed and holds the working temperature of the components down. The welder is also fitted with a set of protections: thermostatic, overvoltage (against mains fluctuation and generator operation), undervoltage and overload. These systems protect the machine, improve operator safety and extend the life of the equipment.
Technical Specification
| Parameter | Value |
|---|---|
| Full name | TELWIN SUPERIOR TIG 311 DC 230V/400V + ACC. |
| Catalog number | 816123 |
| EAN code | 8004897972909 |
| Supply voltage | 230V (1ph) / 400V (3ph) - automatic detection |
| Mains frequency | 50/60 Hz |
| TIG DC welding current range | 5 - 300 A |
| TIG DC duty cycle (EN60974-1, 40°C) | 300 A @ 35%; 220 A @ 60%; 180 A @ 100% (for 400V); (for 230V the duty cycle may be lower, for example 200A @ 30%) |
| MMA DC welding current range | 10 - 270 A (400V); 10 - 180A (230V) |
| MMA DC duty cycle (EN60974-1, 40°C) | 270 A @ 35% (400V); 180 A @ 30% (230V) |
| Open circuit voltage | 90 V |
| Maximum coated electrode diameter (MMA) | 5 mm (for 400V); 4 mm (for 230V) |
| Protection rating | IP23 |
| Dimensions (L x W x H) | 470 x 200 x 375 mm |
| Weight | approx. 17.5 kg |
| TIG functions | Non-contact HF striking / contact LIFT striking, TIG Pulse (frequency and pulse balance adjustment), 2T/4T mode, Bi-Level, start and end current adjustment, slope up and slope down times, gas flow time before and after welding (Pre Gas, Post Gas), Easy Pulse function. |
| MMA functions | Arc Force, Hot Start, Anti-Stick |
| Protections | thermostatic, overvoltage, undervoltage, overload, generator (+/-15%) |
| Control | Microprocessor, digital display |
| Cooling | Fan |
Key Features and Benefits
- Versatile Dual Voltage Supply (230V/400V): Thanks to the automatic voltage recognition system, the SUPERIOR TIG 311 DC welder can be connected both to a single-phase 230V mains and to a three-phase 400V mains. That removes downtime and the need to own several machines, and keeps the welder usable in the workshop, on assembly and on site, whatever the power infrastructure. For a professional it means mobility and readiness to work in typical workshop conditions.
- Advanced Pulsed TIG DC with Full Adjustment: The TIG Pulse function, with precise adjustment of frequency, base current and pulse duration, gives close control of the weld pool and of the heat put into the joint. The result is minimal distortion, the ability to weld very thin material (even below 1 mm) and clean, even beads with good penetration, in particular on stainless steel and other high alloy grades. This is the key to sound joints where every detail counts.
- High Output and Duty Cycle for Professionals: Designed for intensive use, the welder offers a duty cycle of 300A at 35% for TIG on a 400V supply. That means longer continuous work at high currents without the risk of overheating, which translates directly into productivity, in particular on large structural projects and series production.
- Microprocessor Control and Digital Interface: Precise microprocessor control keeps welding parameters stable and repeatable. The clear digital display and the control panel make it quick and accurate to set every function, including advanced options such as Bi-Level (switching between two welding current levels) and Easy Pulse. That saves time and reduces errors, even for less experienced operators.
- Support Functions for TIG and MMA Welding: Beyond the standard functions, the SUPERIOR TIG 311 DC offers non-contact HF arc striking or contact LIFT striking for environments sensitive to interference, adjustable gas flow before and after welding to protect the weld pool, and Arc Force, Hot Start and Anti-Stick for the MMA method. Starting is easier, the arc is stable and the electrode does not stick, which raises both comfort and weld quality.
- Solid Construction and Mobility: The machine has a housing that stands up to workshop and building site conditions (IP23 protection rating). Despite its capability and power, the welder keeps relatively compact dimensions and moderate weight, which makes it easier to transport and to move around the workplace. Durability combined with practicality.
Product Applications
- Welding stainless steel structures in the food, chemical and pharmaceutical industries
- Precision workshop work, small series production and prototyping
- Repair and maintenance of industrial machinery and equipment
- Construction and assembly of pipelines and pressure installations
- Shipbuilding and offshore work (carbon steel and stainless steel parts)
- Automotive work, welding exhaust system parts, reconditioning of components
- Welding parts in copper, nickel, titanium and their alloys
- Installation and assembly work on site that needs a mobile and versatile power source
Kit Contents
- TELWIN SUPERIOR TIG 311 DC 230V/400V welder
- TIG welding torch (for example ST26, 4m)
- Earth cable with clamp
- Gas pressure regulator with two gauges (may be optional or dependent on the specific "+ACC." offer, worth confirming)
- Set of consumable parts for the TIG torch (ceramic nozzles, collets, current connector, torch cap)
- Operating manual and warranty card
Summary: TELWIN SUPERIOR TIG 311 DC 230V/400V + ACC. - Your Best Investment
The TELWIN SUPERIOR TIG 311 DC is an investment that redefines the standard for professional TIG welding. The combination of dual voltage supply (230V/400V), advanced pulsed TIG DC functions and reliable construction gives you a tool ready for any demanding job, with high weld quality and strong output. Stop accepting compromises and choose precision, power and versatility. Contact us today to learn more and to join the professionals who work with Telwin technology.
Catalog number: 816123
EAN code: 8004897972909
