What generator is needed for a welding machine: how to choose and where to order? – Setafi

With the choice of a generator for welding, there are often difficulties. What to buy? How to choose the right one? Where to save on the budget, but get a normal welding machine with gasoline? In our article you will find answers to all problem situations. Let's start!

Which generator is needed for a welding machine: evaluation criteria

Any technique has a whole list of technical characteristics. They are indicated on the box, in the passport or instructions for use. The whole list is enough to make a choice in favor of one or another version of the welding gasoline unit.

For the right choice, only five parameters are enough:

• Device power
• Welding current
• What diameter electrodes are used in the machine
• Is the generator compatible with the welding machine
• Synchronous generator or with hybrid technology (also called Duplex)

This is enough to figure out which generator is needed in a particular situation for a welding machine.

It is worth saying that all generator models are divided into several more. Duplex hybrid versions exist. For welding, we are only interested in a synchronous or hybrid generator, others will not work: the inverter does not have enough generator power for welding.

Power generator equipment for inverter

The parameter is easy to determine, since the manufacturer is obliged to indicate it in the technical documentation. All in sight. Even a child can find information.

The main thing here is not to confuse the units of measurement (because there may be several, the main one is kW) and the generator power options for the welding inverter: nominal and maximum.

The generator is only efficient with a quarter or half more power than you need for a welding inverter. This is because the constant use of the generator produces a maximum value over time, it decreases. Without a certain “reserve”, the inverter at one time may simply not start from it, since there will be little power.

The current strength of the gas generator for welding: which one to choose

There is also an option how you can use the generator weaker than necessary for the welding machine, but you will have to make a limitation - set a lower current strength on it than is required in normal conditions. The device works all the same, but a little weaker.

Example: A 4kW generator model requires 136A. This means that without losing the quality of the current strength, you can cook at 130 A. You just need to lower the parameter on the inverter and calmly connect the motor.

How to choose the correct electrode diameter

One of the parameters on how to choose a generator for a welding machine is whether the generator power is suitable for the diameter of the working electrode. Below is a list by which you can navigate in the approximate parameter of the electrodes:

• 2.5 Kilowatt - 2mm
• 3.5 Kilowatt - 3mm
• 4.5 Kilowatt - 4mm

Thus: for work with an inverter and a motor of 4.5 kW and above, electrodes from 4 mm are needed. For other situations, proceed similarly to the list.

Which generator is suitable for a particular brand of welding device

In order to orient a little in the entire range, below we have presented a small selection of inverters, according to which the motors were approximately made up.

Svarog - strong and durable inverters with a five-year warranty. To help them, it is enough to purchase a generator of an inexpensive segment like Huter and Fubag.

Kemppi - the model has proven itself in production and in harsh situations. Here you need a device with low fuel consumption and resistance to wear. You have to work hard and at full capacity.

Resanta is small in size, but no less powerful. For household versions, BRIMA brand generators are perfect, which can also be installed as a backup power source when welding is not needed in operation.

What else you should pay attention to when buying an engine

There are some more useful tips that are overlooked by experts and not mentioned in video reviews. They will definitely come in handy when buying your first generator for welding.

1. If your device has a power rating of up to 10 kilowatts, then it is better to look for a fuel-powered option. These are the most common devices. More - on gasoline, more powerful - on a diesel basis.
2. A margin of 50% of capacity is not required. Enough 15-25% to facilitate the ignition of the arc between the electrodes. For a diesel model, a reserve of half the original power is required.
3. The most functional stations are with cast-iron sleeves. The minimum time the system will work is about one and a half thousand hours. Similar models, but with an aluminum base, work three times less.
4. There are welding machines with the PFC marking. Such models received a device power correction system. The result is that you can work even at low powers by simply adjusting the mark to be compatible with the generator.

The purpose of our article is to tell readers about engine models for domestic use. For professional purposes, the parameters may vary, be careful.

Semi-automatic welding machines that use argon may have problems connecting to the generator unit. The manufacturer must indicate this in the technical data sheet. If there is no information, consult with experts before buying a motor for your inverter.

Using just a few tips, you will get a high-quality and reliable inverter motor that can be used not only for welding, but also for other domestic purposes. However, it never hurts to consult with a professional. Ask for advice in the store, analyze the knowledge gained with your own and determine the ideal model for yourself. See you soon!