Fronius's TransPocket electrode welding systemClick image to enlarge

Whether in mechanical engineering and plant construction, in steel, metal and portal construction, in metalworking and forging or in workshops, many users depend on mobile welding systems which deliver outstanding results with different types of electrodes, even in harsh operating conditions. Fronius has developed such a solution with the TransPocket 150 and the TransPocket 180, the new generation of their single-phase stick (SMAW) welding system.

This new development has offers a simple operation and an increased range of functions. A digital resonance inverter ensures perfect weld properties in a variety of applications. Thanks to their innovative PFC (Power Factor Correction) technology, the compact and easy-to-handle Fronius systems are also very energy-efficient.

Depending on the main intended use, the welding systems are available in different versions. Fronius is also adding a single-phase electrode welding system with a welding current range of up to 180 amperes to its portfolio for the first time, in the form of the TransPocket 180. The new models are designed primarily for stick (SMAW) welding and can utilize stick electrodes with diameters up to 4.0 mm (5/32 in.). When using cellulose electrodes (CEL), a specially selectable operating mode ensures perfect welding results. New, extended dynamic settings allow the user to precisely adapt the ignition to the electrode used. The HotStart function facilitates the ignition of CEL and rutile electrodes, whereas SoftStart ensures a stable arc in the case of basic electrodes, which ignite at a low welding current.

Fronius TransPocket Click image to enlarge

This latest generation of devices from Fronius is also suitable for TIG welding: With a new TIG Multi Connector and a welding torch with an Up/Down Function at the user's disposal to adjust the welding current via a key. In the case of the TransPocket 150, the amperage is between 10 and 150 amperes, and in the case of the TransPocket 180, even between 10 and 220 amperes. Two-step and four-step TIG welding is possible with the TransPocket, as well as current pulsing. For fast and easy joining of thin sheets without filler metal, the TAC tacking function is also available.

Fronius TransPocket Click image to enlarge

One of the innovations according to Fronius is the digital resonant intelligence developed by the company. This enables almost ideal output characteristics and, due to the continuous availability of power reserves, ensures the most stable arc possible with reduced energy consumption. This results in outstanding ignition and weld properties that are evident in the welding process, primarily because the electrode ignition is optimized and spattering is minimized. The low short-circuit current of approximately five amperes when in contact with the workpiece prevents the electrode from sticking. The current then increases to 35 amperes in order to ensure that the arc does not break off. The device then reaches the target current, which the user can set precisely.

Another highlight of the new TransPocket generation is the PFC (power factor correction) technology: This automatic power factor correction models the input current in such a way that it has an almost ideal sinusoidal wave. This minimizes the reactive power and uses the mains current in an optimal and effective manner. The output power is additionally increased by equalizing the harmonics. In comparison with devices without PFC, this allows a higher welding current of up to 180 amperes with the same mains fuse. Furthermore, the Fronius technology ensures higher stability in the event of voltage fluctuations.

With a tolerance of -20/+15 per cent, the welding systems are extremely well suited for generator-powered operation and supply the maximum power even in the event of high fluctuations in the grid voltage. In this case, they are protected against surges of up to 400 volts – an important benefit if, for example, the device is mistakenly connected to a high-voltage current connection. Long mains leads with a length of 300 ft or more can also easily be implemented. The user therefore has a greater operating radius and more flexibility when welding.

For reliable operation in the varied and often harsh operating conditions, the power source has a sturdy and robust plastic housing. Thanks to the IP 23 protection class, the delicate electronics are safely shielded from dust and moisture, also aided by a permanent dust filter and improved cooling. By means of a special slat arrangement on the front of the housing and an optimized air duct, this prevents contamination in the device. The air flow is only conducted where cooling is required–for example to the transistors. The PC boards are therefore protected against dust and dirt. Plastic feet prevent damage to the housing, which may occur for example when the housing is dragged over the floor. Ergonomic handles make it easy to carry, and welding power-leads can be easily and conveniently wound up on the device.

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