Mecc Alte welding alternators integrate both capabilities into a single rotating machine, helping OEMs develop compact, versatile equipment for applications where mains power is unavailable or impractical.
A welder-generator has two jobs: deliver stable welding performance and provide useful auxiliary electrical power. Depending on the selected range, welding and auxiliary power can be managed in different ways.
Weld or generate power. A dedicated selector allows the operator to choose between welding and auxiliary generator operation. Available on: HM1, PW2 and PW3.
No mode switching required. Welding and auxiliary power are available without manually changing operating modes. Available on: PW2 EL – Easy Load.
Weld and generate power simultaneously. Advanced electronic control enables welding and auxiliary generator power to operate simultaneously. Available on: EPW3, EPW4 and EPW5.
More than welding and generation. PW3A SCR combines electronically controlled DC welding and AC generation with additional functions including battery charging and jump-start capability. Available on: PW3A SCR.
Compare welding current, drive power, pole configuration, generator output and welding/power operation to identify the most suitable range for your application.
| Range | AC / DC | Poles | Welding Current | Drive Power | Generator Output | Welding + Power Operation |
| HM1 | AC | 2 | 55–220 A | 8.5–13 HP | 4–8 kVA | Switchable |
| PW2 | DC | 2 | 40–240 A | 9.5–15 HP | 2–6 kVA | Switchable |
| PW2 EL – Easy Load | DC | 2 | 40–240 A | 11.5–13.4 HP | 4.5–5.5 kVA | Seamless – no switching |
| PW3 | DC | 2 | 40–300 A | 20 HP | Up to 10 kVA | Switchable |
| PW3A SCR | DC | 2 | 35–300 A | 23 HP | Up to 12 kVA | Multi-Function |
| EPW3 | DC | 2 | 35–300 A | 20 HP | Up to 10 kVA | Simultaneous |
| EPW4 | DC | 2/4 | Up to 400 A | Model dependent | Up to 15 kVA | Simultaneous |
| EPW5 | DC | 4 | Up to 530 A | Up to 32 HP* | Up to 18 kVA* | Simultaneous |
*Ratings vary according to model and 50/60 Hz configuration. Select an individual range for full technical data, duty cycles, drive-power requirements and available configurations.
(55-200A – 4kVA–7kVA / 50Hz) (55-220A – 7kVA–8KVA / 60Hz)
The AC brushless generators-welders series denominated HM1 guarantees unlimited operation with minimum maintenance. In fact, its particular system enables the user to have full maximum power – either as a single phase generator or as a welder. With a distribution along the sides of the unit for output sockets, the product is really easy to use and delivers great accessibility and a comprehensive number of different panel options.
The AC welder is governed by a selector switch which controls the two functions (generator or welder) and by a commutator which regulates the welding current with seven positions on two scales (one scale for 130 amp version). All of this is packed inside a solid and rugged aluminium structure with a compact and light design and IP23 protection level. All units have insulation systems to Class H requirements through advanced impregnation processes and material selection.
The HM1 series has been engineered to satisfy the most common end-user needs and the use of a single phase generator with good performances is complemented by an excellent AC welder. This permits the use of the most common diameters of rutile-type electrodes.
| Code | Poles | Power cl. H [50Hz] | Power cl. H [60Hz] | Welding Current [50Hz] | Welding Current [60Hz] |
| HM1 130AC | 2 | 4kVA | – | 55÷130 | – |
| HM1 180AC | 2 | 6kVA | – | 55÷180 | – |
| HM1 200AC | 2 | 7kVA | – | 55÷200 | – |
| HM1 190AC | 2 | – | 7kVA | – | 55÷190 |
| HM1 220AC | 2 | – | 8kVA | – | 55÷220 |
(35-300A – 4-10kVA / 50Hz/ 60Hz)
The PW2 and PW3 generators–welders series are brush-type 2 pole alternators with compound or compound-electronic regulation. This feature guarantees output voltage precision and motor-starting capability.
Created due to well-established and continuous experiences in the welding sector, this rotating DC welder series has models with 3 phase and derived 1 phase or pure 1 phase generator output. A unique characteristic of the series (models 200, 220) is that it automatically disconnects the generator output when it is being used in the welder function. This avoids having dangerous voltage and prevents overload. Instead, in the generator function, there is a protection which, due to its specific system characteristics, prevents dangerous voltages in the generators – in case of accidental short circuit in the welding part. The selection of the required function, and of the output current regulation current, is governed by two commutators in the rear panel.
Again… a variety of socket boxes allows configuration of the socket on the side of the unit for maximum access. The frame is made of Fe P12 steel, and all shafts are C45, to ensure the unit can withstand rugged environments and is resistant to vibration. All units have insulation system to Class H requirements through advanced impregnation processes and material selection.
The PW series has been engineered to satisfy the end-user that has specific medium power requirements and it allows the use of single or three phase utensils and of a DC welder which uses all types of electrodes (rutile, basics, cellulosics).
| Code | Poles | Power cl. H [50Hz] | Power cl. H [60Hz] | Welding Current [50Hz] | Welding Current [60Hz] |
| PW2 170T DC | 2 | 2/4kVA | – | 40÷170 | – |
| PW2 200T DC | 2 | 3/5kVA | – | 40÷200 | – |
| PW2 220T DC | 2 | 3/6kVA | – | 40÷220 | – |
| PW2 200M DC | 2 | 4kVA | 4kVA | 40÷200 | 40÷200 |
| PW2 220M DC | 2 | 5kVA | 5kVA | 40÷200 | 40÷240 |
| PW2 200EL DC | 2 | 4.5kVA | 4.5kVA | 40÷200 | 40÷200 |
| PW2 220EL DC | 2 | 4.5kVA | 5.5kVA | 40÷200 | 40÷240 |
| PW3 300T DC | 2 | 4/10kVA | – | 40÷300 | – |
(35÷500A – 4kVA÷12kVA / 50Hz AND 60Hz)
This welder-generator is designed to manage and control the operation of a dedicated low voltage three-phase alternator to perform the MMA welding functions of the charger and “Starter” if it requires you to put in motion a vehicle having no battery charge enough to do it. It also has added an additional constant voltage energy function useful to the operation of a possible implementation M.I.G. (Optional ZEUS).
The selection of these functions are made via a switch on the front panel of the generator. Selecting the MMA mode gives a “range” current which varies from 35 to 300 by adjusting the “Current setting” potentiometer.
Through the charger function it is possible to charge different voltage batteries, such as a simple car battery with a voltage of 12V, large commercial vehicle batteries with a voltage of 24V and batteries for forklifts with 48V voltage.Of course the machine also offers the possibility of a dedicated A.C. 1ph/3ph. generator.
| Code | Poles | Power cl. H [50Hz] | Power cl. H [60Hz] | Welding Current [50Hz] | Welding Current [60Hz] | ||
| 1ph | 3ph | 1ph | 3ph | ||||
| PW3A SCRT5 | 2 | 4kVA | 10kVA | 5kVA | 12kVA | 35÷300 | 35÷300 |
| PW3A SCRM5 | 2 | 6/3kVA | 3/6kVA | 9/4kVA | – | 35÷300 | 35÷300 |
(35÷500A – 4kVA÷15kVA / 50Hz AND 60Hz)
This series of welder generators has been designed to ensure high performance and maintenance-free operation. The EPW3; EPW4; EPW5 welder-generators are brushless excitation (with rotating diodes) and a total electronic regulation. The generator is regulated using the EVR01 regulator, and the welding current is regulated by “chopper” technology to obtain high welding quality (DC high frequency 40KHz). Due to a special design, this system also allows for simultaneous use of the alternator and the welder. This special circuit also permits the forcing of the arc, anti–blockage, and is protected against short circuits on the exit from welding. The frame is made of Fe P12 steel, and all shafts are C45, to ensure that the unit can withstand rugged environments and is resistant to vibration. All units have insulation system to Class H requirements through advanced impregnation processes and material selection.
The EPW3-4-5 series has been sized to satisfy the most professional requirements of the welding sector, as it can be employed with high duty cycles in synergy with a 3 phase alternator which has optimum characteristics. All types of electrodes can be welded (rutile, basic cellulosic).
| Code | Poles | Power cl. H [50Hz] | Power cl. H [60Hz] | Welding Current [50Hz] | Welding Current [60Hz] |
| EPW3 300T DC | 2 | 4/10kVA | – | 35÷300 | – |
| EPW4 400T DC | 2 | 10/15kVA | 10/15kVA | 35÷400 | 35÷400 |
| EPW4 350T DC | 2 | 4/10kVA | 6/11kVA | 35÷350 | 35÷370 |
| EPW5 500T DC | 2 | 10/15kVA | 10/18kVA | 35÷500 | 35÷530 |
Engine-driven welder-generators operate in diverse environments where reliable, portable welding power is essential. Mecc Alte welding alternators are used across:
Stable and controllable welding current is fundamental to consistent arc behaviour and welding performance. Across the range, Mecc Alte offers solutions for different welding requirements, from straightforward AC electrode welding through to professional electronically controlled DC systems.
Depending on the selected range, capabilities include:
| AC and DC welding solutions | Adjustable welding current |
| Welding currents from 35 A to 530 A | Support for rutile, basic and cellulosic electrodes on applicable models |
| 2- and 4-pole configurations | High duty-cycle options for professional applications |
| 50 Hz and 60 Hz solutions | Electronic welding regulation on selected ranges |
| Single- and three-phase auxiliary generator configurations | High-frequency chopper regulation on the EPW range |
Full welding characteristics, duty cycles, electrode sizes and electrical data are available on the individual range and model pages.