Imagine complete freedom of operation, no matter where your next project is located. The TELWIN SUPERIOR TIG 311 DC is equipped with an intelligent automatic voltage recognition system that allows you to work seamlessly with both single-phase 230V and three-phase 400V power. Forget the need for transformers or multiple different welders – this one device will adapt to the available infrastructure.

For the professional, this means invaluable versatility. You can easily complete jobs in modern production halls with access to a 400V mains to take full advantage of the machine’s power, and then move the welder to a smaller workshop or on a customer job where only a standard 230V outlet is available. The PFC (Power Factor Correction) system, often used in this class of Telwin equipment, further optimizes power consumption and reduces interference introduced into the grid, which is especially important when working on weaker installations or with generators. This feature not only increases your mobility, but also reduces operating costs and ensures stable operation even in less favorable power conditions.

The TELWIN SUPERIOR TIG 311 DC is a true command center for the TIG welder. The key to perfect welds is complete control over arc parameters, and this unit offers it down to the smallest detail. The TIG Pulse function, with adjustable frequency (from low values for better control of the weld pool in thicker materials, to high values for narrower welds and a smaller heat affected zone in thin sheets), base current and pulse fill factor, allows precise management of linear energy. The result? Less distortion, better penetration and an aesthetically pleasing weld face, even on demanding materials like stainless steel and titanium.

In addition, the welder offers advanced features such as Bi-Level, allowing the welder to quickly switch between two pre-programmed welding current levels using a button on the handle. This is extremely useful for welding materials with varying thicknesses or for tacking and filling welds without interrupting the process. Fully adjustable Slope Up and Slope Down times, as well as Pre Gas and Post Gas times, ensure optimal conditions for starting and finishing the weld, protecting the tungsten electrode and preventing oxidation of the hot pool. The Easy Pulse function simplifies the setting of pulse parameters, which is helpful for less advanced users, while giving full capabilities to experts.

The TELWIN brand has been synonymous with quality and reliability in the welding industry for years, and the SUPERIOR TIG 311 DC model continues this tradition. The unit was built for long-term and intensive use in harsh industrial environments. The rugged IP23-rated metal housing protects internal components from dust and water splashes, allowing safe use both indoors and outdoors (under a canopy).

The high duty cycle (e.g., 300A @ 35% at 400V) means that the welder is able to operate at high parameters for long periods of time without the risk of overheating, which is crucial for maintaining production continuity and on-time delivery. An advanced cooling system with a powerful fan activates when needed, optimizing the operating temperature of components. In addition, the welder is equipped with a number of protections: thermostatic, overvoltage (to protect against voltage fluctuations in the network or when working with a generator), under-voltage and overload. These systems not only protect the device itself, but also increase operator safety and equipment durability.