15 best welding inverters

The Resanta brand is of Baltic origin - the company is registered in Latvia. Factories, as has become common, are located in China. Welding inverters of several lines are supplied to the Russian market:

Semi-automatic devices Resanta SAIPA.
Welding inverters Resanta SAI.
Inverters operating at reduced voltage AIS PN.
Units with argon-arc welding function SAI AD.
Professional ruler with adjustable arc SAI PROF.
“Compact” line - SAI-K.
Inverter plasma cutter - IPR.
Inverter welding operating from 380 V - SAI 315.

This is what the Rsanta SAI-250 PN welding inverter operating at reduced voltage looks like. Reviews about this equipment are mostly positive.

The product, according to reviews, is generally quite good, with its pros and cons. If you need a welding machine for home use, Resanta is a worthy choice. As the pros say: its arc is not as heavy as other brands in the same price category. But the quality is unstable: for some, under constant load (in workshops and in production), it works for years, while for others, it takes it for repairs every two to three weeks (also in production). Only production and welders are different. And those who use Resanta welding inverters for domestic purposes - in a private house, in a rural area, in a garage - respond positively to the operation of the units.

The operating mode of welding machines of any line is 70% to 30%. Which means that when working at 140 A, out of 10 minutes you can cook/cut 7, but 3 will have to rest - wait until the device cools down. The ratio is not the worst and the mode is generally convenient.

The best manufacturers of welding inverters

Many inverters with good properties are Russian. There are manufacturers specializing in welding equipment. Among the popular brands:

Aurora;
Svarog;
RESANTA;
Wester.

Aurora is a Russian manufacturer that actively cooperates with Chinese enterprises. The range includes units for industrial purposes. Some operate on a network with a voltage of 380 V. Aurora inverters work well with aluminum, cast iron elements and bases made of other materials.

Svarog is another Russian manufacturer that has been developing and producing welding equipment for more than 10 years. The company offers varieties for all types of activities. The products are distinguished by their performance, durable body, and rubberized elements. Has stable good results at low voltage.

RESANTA produces lightweight models with an average productivity potential of 5 kW. The difference between the supplied equipment is the long warranty period. The brand itself is registered in Latvia, and its industrial facilities are located in China. In Russia, products are represented by devices for solving problems with minimal power. Can operate in a protected gas environment.

Wester is a multifunctional organization that develops and produces power equipment, as well as compressor and pneumatic equipment. Specifics - a productive potential of 8 kW, support for a stable arc, a high degree of protection against fire and electric shock to the user.

Many manufacturers are improving the proposed devices. For example, it is easy to do welding work in a horizontal, vertical position and at an angle. Almost all models of these brands are characterized by minimal sparking and reduce the use of consumables. Household and semi-professional inverters do not require special qualifications of a welder, since all equipment is easy to operate and is complemented by various options.

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Rating of semi-automatic welding machines

Semi-automatic machines are widely used in auto repair shops and garages for car repairs and mass production of metal structures (fences, gates). They are also relevant for the home, especially if you have a car or other equipment.

Aurora OVERMAN 205 (MIG/MAG, MMA)

Rating:5.0

NAKS certificate: no
welding inverter
manual arc welding MMA
semi-automatic welding (MIG/MAG)
Max. welding current: 180 A (MMA), 200 A (MIG/MAG)
power: 8 kVA

Average price: RUB 36,100

Reliable semi-automatic from the Overman series with reduced splashing of molten metal. Optimized cooling is provided by four radiators and a massive fan. Cooks with electrodes, self-shielding wire and in an inert gas environment. Proven in welding sheet metals and aluminum. The controls on the front side allow you to control the main parameters of the device without opening the cover. Electronics stabilizes operation in networks with voltage dips up to 140 V.

Peculiarities:

smooth adjustment of current and voltage;
inductance adjustment for arc control;
variable wire feed speed;
reduced splash formation;
perfect Japanese transistors.

Fubag INMIG 200 SYN PLUS (TIG, MIG/MAG, MMA)

Rating:4.9

welding inverter
argon arc welding TIG
manual arc welding MMA
semi-automatic welding (MIG/MAG)
Max. welding current: 170 A (MMA), 200 A (MIG/MAG), 200 A (TIG)

Average price: RUB 45,680

A universal synergetic unit with the ability to control the parameters of detachable drops of liquid metal: selection of the type of protective gas, wire, and burner operating mode. Easily converted for argon arc welding. Suitable for both auto repair shops and small industries where various types of welding are needed. The electronics are protected from overheating and overloads. At 400 C the operating cycle time is 4 minutes. There is a mode for short seams with pulsed automatic wire feed.

Peculiarities:

use of IGBT transistors;
indication of operating parameters;
selection of material type and shielding gas;
synergetic management

Svarog REAL MIG 200 (N24002N) (MIG/MAG, MMA)

Rating:4.8

NAKS certificate: no
welding inverter
manual arc welding MMA
semi-automatic welding (MIG/MAG)
Max. welding current: 160 A (MMA), 200 A (MIG/MAG)
power: 7.70 kVA

Average price: RUB 32,580

Professional apparatus for joining metals in an atmosphere of protective gases. For MIG/MAG modes, polarity changes with wire afterburning are available, and with experienced hands you will be able to weld stainless steel and aluminum. The circuit using IGBT modules demonstrates a stable arc during mains voltage drops of up to 160 V. Current and voltage are adjustable within a wide range, making it possible to work with any grade of steel up to 8 mm thick. The FCAW mode is designed for welding with flux-cored wire even in a draft - the protective atmosphere will prevent oxidative processes.

Peculiarities:

reliable arc burning at 160 V;
afterburning and dry running of wire;
aluminum welding;
polarity change.

Wester MIG 140i (MIG/MAG, MMA)

Rating:4.7

NAKS certificate: no
welding inverter
manual arc welding MMA
semi-automatic welding (MIG/MAG)
Max. welding current: 140 A (MMA), 140 A (MIG/MAG)
power: 4.70 kW

Average price: RUB 16,690

Device for semi-automatic welding with flux-cored wire, refractory electrodes and electrode wire in a gas atmosphere. Regulators on the control panel allow you to change the current over a wide range and the speed of the wire. Light indicators notify you about the operating mode and status of the device. The PF factor is 60% - withstands 6 minutes of continuous operation at peak load. Rubber feet hold the tool firmly on any surface, and their height prevents dust from entering the body.

Peculiarities:

integrated thermal protection;
smooth control of operating parameters;
three types of welding;
rich equipment.

SPECIAL MAG-170 INVERTOR (MIG/MAG)

Rating:4.6

NAKS certificate: no
welding inverter
semi-automatic welding (MIG/MAG)
Max. welding current: 150 A (MMA), 160 A (MIG/MAG)
power: 6.40 kW
electrode diameter: 1.60-4mm

Average price: RUB 15,720

Inexpensive unit for a construction site, production workshop or metalworkshop. Supplied in a durable case with protection from shock, dust, dirt and vertically falling drops of water. With a power of up to 6.4 kW, it is powered from a single-phase household network. Equipped with a pair of indicators: overheating and power availability. IGBT transistors stabilize the arc during supply voltage surges. Regulators allow you to change the operating current and wire feed speed.

Peculiarities:

quick polarity change;
protection of electronics from overloads, overheating and the external environment;
welding in inert gases and without them;
rich set of supplies.

What to look for when choosing a welding inverter

The inverter type welding device is divided into:

for industrial purposes;
performing professional tasks;
solving everyday problems.

The first type is intended for continuous use throughout the day. Such a device has a significant price, can withstand significant loads, and allows you to weld massive metal structures.

The second type is relevant for repairing pipes and metal frames. It is used by professionals, but in a situation where it is possible to give the device a rest. The current reaches 200-300 A. These often include universal inverters, suitable for solving several problems at once.

The household option is ideal for welding small areas; it requires periodic breaks to prevent overheating. Such inverters are ideal for small-volume and rare repairs and have an affordable price. In them, the welding current is almost always below 200 A.

When purchasing a welding inverter, emphasis is placed on the following indicators:

availability of modes;
welding current;
open circuit voltage;
time of continuous activity;
diameter of conductors;
thickness of metal elements;
dimensions and weight.

One of the important parameters before purchasing is the welding current adjustment range. To solve household and economic problems you need 16-200 amperes. The indicator depends on the thickness of the workpieces used and the diameter of the conductor. Therefore, this indicator must be adjusted.

The simplicity and stability of the arc is affected by the voltage between the two terminals of the electrical circuit. Beginners should focus on models with 60-90 V data; masters will need a device with a wider range.

Duration of activation is another important parameter. If switched on continuously and at high currents, the unit may overheat. In this situation, it usually turns off to cool down further. For example, with a duty cycle of 30%, keeping the arc at maximum current is permissible for 3 minutes out of 10. The device will need to rest for the remaining seven minutes.

Some inverters have additional protection against dust and moisture. The protection class is often IP21, less often IP23, but in any case, welding in the rain is not recommended. Metal dust is also dangerous, so you should not turn on the angle grinder near a functioning inverter.

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General information about the manufacturer

The headquarters of the Resanta company is located in Latvia; the devices are assembled partly from Chinese components. The company specializes in the production of welders for various fields of activity:

Household.
They can be used both in the country house and in the garage to perform a small amount of work. Connect to a 220 V power supply. Recommended for beginners and those just learning to cook. The welding current range ranges from 120-200 A. Some models are equipped with smooth arc adjustment.
Professional. Allows you to obtain a higher quality seam. Popular among small car repair shops and ordinary housing and communal services employees. Ideal for repair work in harsh conditions. They have an increased time of continuous operation when compared with household models, which are designed for intermittent short-term operation. Welding current varies between 200-300 A.
Industrial. They are used in welding critical structures made of various materials, when high demands are placed on the quality of the weld. The power of the devices varies between 250-500 A. It is allowed to use welding wire on a reel with a diameter of 0.5 to 0.8 mm.

The line of welding machines is represented by plasma cutting devices, as well as inverters of the following lines:

Compact;
PN (ability to operate on reduced voltage);
PROF (professional with extended continuous operation time).

In addition, the company is engaged in the development and production of stabilizers (which may be required to ensure stable operation of a welder in a country or garden area), thermal equipment, and measuring equipment.

Which welding inverter is better to choose?

Welding inverters have good efficiency and allow you to save on scarce electrical materials. They also differ in that they have mode adjustment over a wide range. Values can range from a few amps to values in the hundreds and thousands. The welding process is carried out using coated conductors. When choosing, the welding method and the stability of the arc ignition are selected. To expand the scope of application, it is worth choosing models that allow you to join difficult-to-weld steels and alloys.

Inverter devices have a more substantial price than transformer devices, but are used without problems to solve a huge number of problems. When choosing, focus on the static current-voltage characteristic; the functionality of the device depends on it. Universal machines allow operation in different modes and have an extended input voltage range.

When choosing, pay attention to the class, where each one corresponds to certain tasks, quality, volume and productivity. Sometimes a welder's mask and shield are included.

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Practical advice for repairing Resanta welds

If you are skilled in such work, then the diagrams below will help you. There are also several recommendations based on DIY experience.

After a year and a half of operation, Resanta 220 began to shut down due to overheating if operated at currents greater than 140 A. The warranty had expired, so I went and looked at it myself. All that happened was that the input cable was not properly tightened. By the way, it was worn out - it worked every day for a year and a half. I replaced the cable, tightened the terminals in an unladylike manner, and also vacuumed it.

Timofey, Primorsky Krai

I bought myself Resanta 250 Prof. The seam holds perfectly and cooks smoothly. I like. Only after a month of work (1 kg of troika a day, but not always, it happened less), after a pop inside, he died. I sent it in for repair and waited 45 days. After the repair, a breakdown occurred a month later. It happens if the electrical wire is not clamped in the holder. I didn’t want to wait another 45 days, I promoted it myself. There were almost no wires attached to the board. Only baited. And how did the service people look? Or are they specialists? A piece of the board has burned out. I soldered the wire to the terminal and screwed it on. Works. True, at sub-zero temperatures the indicator now shows something unthinkable, but it works.

Vitaly, Krasnodar

My Resanta SAI 220, after a month of working in threes, stopped showing signs of life. I opened it, checked, two FGH40N60SFD transistors burned out. I found them, bought them, changed all four, even though two burned out. At the same time I replaced the 12 W resistor with a 51 Ohm one. It worked, but not for long. The transistors burned after several turns on. Apparently, the batch was defective. I bought others, installed them, and they work fine. Yes. The scheme from 250 was more suitable for my 220 - with minor discrepancies. What can I say, the board is made normally, the tracks do not peel off. Though it pleases. Although the parts could have been tested before they were put into production.

Anatoly, Nizhny