Welding equipment such as the Resanta inverter is already well known in our country and is popular among both professional specialists and home craftsmen. The trademark itself, as well as the company whose specialists are developing Resanta devices, are registered in Latvia, and production facilities are located in China.
Welding equipment "Resanta"
On the domestic market, equipment of this brand is represented by several categories of equipment for welding and more:
- equipment for welding in semi-automatic mode - Resanta SAI PA;
- inverter type welding machines – Resanta SAI;
- inverters capable of operating at reduced supply voltage - AIS PN;
- equipment that can be used to perform welding in a shielding gas (argon) environment - SAI AD;
- devices intended for professional use (on such devices the welding arc can be adjusted) - Resanta SAI PROF;
- a series of highly compact equipment – SAI K;
- inverter devices for plasma cutting – Resanta IPR;
- inverters operating from a three-phase electrical network with a voltage of 380 V - Resanta SAI 315.
4 series of welding inverters "Resanta"
Among the reviews about welding machines of this brand, you can find both positive and negative. The technical characteristics, functionality and cost of Resanta brand equipment make it a good choice for equipping a home workshop. As experienced welders note in their reviews, such inverters have a lighter welding arc than machines from other brands.
Both professional welders, in their reviews, and representatives of organizations involved in the sale and service of Resanta equipment, point out the instability of its quality. Some devices that are actively used in production processes can work without breakdowns for years, but there may also be some that have to be taken to a service center for repairs after just a week of operation. At the same time, the most positive reviews for Resanta equipment come from those who use it for work in a home workshop, on a personal plot or in a country house.
An important parameter for all categories of equipment manufactured under the Resanta brand is the on-time (ON) duration (or load duration - LO). The value of this parameter is 70%, which means that in a period of time equal to 10 minutes, the Resanta inverter can operate continuously for 7 minutes, and 3 must be allocated for it to cool down.
Rules for choosing Resanta welding machines
If you are choosing a welding machine to carry out work at home or in the country, then it is better to pay attention to the Resanta SAI model or its modification, specially designed for operation at low voltage (SAI PN). Although the manufacturer indicates that the equipment can operate with deviations of the standard supply voltage from –30% (154 V) to +10% (242 V), such inverters operate effectively provided that the voltage does not fall below 190 V. If Since the voltage in the electrical network will be even lower, welding can only be performed with small-diameter electrodes.
Welding inverter Resanta SAI-190PN for operation from reduced mains voltage
It is no secret that the voltage in our electrical networks (especially in rural areas) rarely corresponds to the standard value of 220 V. There are situations when the network does not produce even 190 V voltage. If you live in an area where voltage drops in the network are a common occurrence, it is better to purchase an inverter specially designed for such cases - AIS PN. The technical capabilities of the Resanta devices of this series allow them to work effectively even with voltage drops to 140–160 V.
If the important parameters of a welding inverter for you are its dimensions and weight, then you should pay attention to the devices of the “Compact” series. Inverters of this series are distinguished by their reduced dimensions, and their weight is 1–1.5 kg less than that of equipment from other model lines.
Comparison of Resanta welding inverters by size and weight
Resanta inverters belonging to other categories are more suitable for semi-professional and professional use. They are distinguished not only by increased power, but also by expanded functionality, which is often not in demand by home craftsmen. There is no point in purchasing such devices for your workshop, since you will have to pay for unnecessary functionality.
A specific inverter model, if the category of this equipment has already been determined, is selected depending on how much welding current you need to perform the work. It is quite easy to determine what maximum current a particular device can generate: the value of this parameter is indicated in the designation of each model.
The main differences between the SAI-PN and SAI-PROF lines from other models
You should choose a device based on the maximum welding current depending on the thickness of the part you are going to weld and what diameter of the electrodes will be used for this. Thus, for working with electrodes with a diameter of 4 mm, Resanta inverters are suitable, which are capable of generating a welding current of at least 190 A. Naturally, to work on such devices, you can use any electrodes of a smaller diameter.
Electrodes with a diameter of 3 mm can be used for welding using those inverters that generate a welding current of 140 A. More powerful (and, accordingly, more expensive) devices that are capable of delivering a welding current of 220 and 250 A are used to work with electrodes with a diameter of 5 and 6 mm. When making a choice, always answer the question whether you will need such a powerful device at the moment or in the future.
Summary table of technical characteristics of Resanta welding inverters
The best Resanta welding machines
The rating includes models of devices for professional and household use. When compiling the list, we took into account: technical capabilities, cost, build quality, expert ratings and user reviews. The range of welding machines under the Resanta brand is diverse. The review will help you make the right choice of welding equipment, taking into account functionality, advantages and disadvantages.
Professional type welding machine - Resanta SAI 315
Average cost - 27,300 rubles
Despite the fact that the Resanta SAI 315 welding machine belongs to the category of industrial equipment, it can be used for domestic needs. When set to low values, the device can be used in delicate line work. All necessary connections are made on the front panel of the equipment.
The current in the device is regulated over a wide range and in a smooth mode. The machine with high welding current is suitable for long-term work with maximum load. The device is powered from a three-phase electrical network of 380 volts. Voltage deviations are allowed -10 and +10 percent, from 342 to 418 volts. The maximum current is 75 amps or 25 amps per phase.
The diameter of the electrodes for welding reaches 6 millimeters. The minimum diameter of the electrodes is 1.6 millimeters. The adjustment range is from 20 to 315 amperes. The maximum power of the device is 16.5 kilowatts. The open circuit voltage is 85 volts. Arc voltage is 33 volts. The device has protection against internal overheating.
In this case, the shutdown is automatic. The device has electrical protection (IP 21) when operating in damp and rainy weather. The design provides: hot start, arc forced, anti-sticking, forced cooling. The device is equipped with: a digital display, working indicators, stable legs. Kit includes cables and manual. The weight of the unit is 15.4 kilograms.
Pros:
- Automatic shutdown when overheating;
- rapid ignition of the arc;
- presence of smooth adjustment;
- power;
- ease of use;
- build quality;
- ability to perform large volumes of work;
- light weight for a professional device;
- presence of forced cooling;
- low noise level;
- ability to perform delicate work.
Minuses:
- Sensitivity to voltage changes (stabilizer required).
Welding machine Resanta SAI 220A
Average cost - 6700 rubles
The welding machine “Resanta SAI 220A” is classified as household equipment. The equipment is designed for manual arc welding. The device is powered from a single-phase electrical network of 220 volts. Voltage deviations are allowed -30 and +10 percent, from 154 to 242 volts. The maximum power of the device is 5.4 kilowatts.
The maximum welding current is 195 amperes. The minimum current is 10 amperes. At maximum load, current consumption is 30 amperes. The diameter of the electrodes for welding reaches 5 millimeters. The minimum diameter of the electrodes is 1.6 millimeters. At maximum current, the on-time is 70 percent.
The machine can be used to weld carbon and stainless steel. The stated adjustment range is from 10 to 220 amperes. At idle, the voltage value is 80 volts. The device has electrical protection (IP 21) when operating in rainy and damp weather. The device can be operated at a low temperature of -20 degrees.
The design provides: hot start, anti-sticking, cooling, automatic shutdown when overheating (thermal sensor). The device has compact dimensions of 13x31x19 centimeters. The device is equipped with: a digital display, operating indicators, stable legs, two cooling fans. The kit includes wires, a cable with a clamp, with a grounding terminal, a case for transportation and storage, a fastened belt, and an instruction manual. The cable length is 2 meters. The weight of the unit is only 5 kilograms.
Pros:
- Metal durable body;
- good quality/cost ratio;
- light weight;
- high-quality welding at low voltage;
- hot start and anti-stick function;
- high-quality assembly;
- arc stability.
Minuses:
- The adjustment knob rotates freely;
- does not handle welding with 5 mm electrodes;
- short cables.
Welding machine – Resanta SAI 160A
Average cost - 5400 rubles
The inverter device "Resanta SAI 160A" for household use is suitable for inexperienced users. The model is easy to use. As the amperes increase, it is easy to select the electrode diameter using a simple current adjustment scale. The equipment is designed for manual arc welding. The device is powered from a single-phase electrical network of 220 volts.
Voltage deviations up to 149 volts and 260 volts are allowed. The maximum power of the device is 4.9 kilowatts. The stated adjustment range is from 10 to 160 amperes. At maximum current, the on-time is 70 percent. The diameter of the electrodes for welding reaches 4 millimeters. At idle, the voltage value is 80 volts.
The maximum current value is 160 amperes. The design provides: anti-sticking, hot start, electrical protection in humidity IP 21, automatic shutdown when overheating, forced cooling (2 fans). The device has compact dimensions of 340x140x260 millimeters. The weight of the unit is only 4.5 kilograms. The kit includes: cable with grounding terminal, cable with clamp, strap, plug, instruction manual. The cable length is 1.5 meters.
Pros:
- Reasonable cost;
- reliable cable sockets;
- average power without network congestion;
- simple adjustment scale;
- quick ignition;
- small size and weight;
- normal welding with voltage drop;
- the presence of anti-stick and quick start functions.
Minuses:
- Short cable, extension cord required;
- lack of a carrying and storage case;
- it is not possible to work with 5 mm electrodes;
- weak clamp on the ground cable.
Welding inverter for construction – Resanta SAI 250 PN
Average cost - 12,500 rubles
The Resanta SAI 250 PN apparatus is used in professional activities in the manufacture of pipelines and various metal structures. The equipment is designed for manual arc welding. The device is powered from a single-phase electrical network of 220 volts. Allowable voltage drops are 140-240 volts. The stated adjustment range is from 10 to 250 amperes.
The maximum current is 250 amperes. The diameter of the electrodes for welding reaches 6 millimeters. The maximum power of the device is 7.7 kilowatts. The design provides: hot start, anti-sticking, electrical protection in humidity IP 21, automatic shutdown when overheating, forced cooling. The device can be operated at a low temperature of -25 degrees. The weight of the unit is only 5.2 kilograms. The device has compact dimensions of 420x160x300 millimeters.
Pros:
- Seam quality;
- good power-price ratio;
- high power;
- quick ignition;
- light weight;
- works until 10 o'clock.
Minuses:
- Short cables (2 meters).
How is power supplied to the equipment?
One of the reasons for the high popularity of Resanta brand inverters as equipment for the home workshop is that they successfully operate from a conventional electrical network with a voltage of 220 V. Some models, which is especially convenient for performing work in places where there is no centralized power supply, can operate from autonomous sources of electric current - gasoline or diesel generators.
It is very important that the electrical outlet to which the Resanta inverters are connected is grounded, since they comply with protection class IP 21.
So that when the inverter is operating, the machine installed in the electrical panel does not turn off the power supply, it must withstand a current of at least 16 A (when welding at a current of 190 A).
To connect the welding inverter, you need to make a dedicated power line
Features of operation of Resanta inverters
Before connecting the inverter to the electrical network, it is necessary to connect the power cable and ground cable to its connectors, and also check that its switch is in the off state. Before pressing the power button, it is necessary to set the minimum value of the welding current on the equipment.
The power switch for Resanta inverters is located on the rear panel
The electrical cable that connects the inverter to the power supply must be completely unwinded from the reel so that it does not create an inductor that could negatively affect the welding process. In addition, in order for the Resanta brand inverter to serve you for a long time and allow you to effectively perform welding operations, you must adhere to a number of recommendations.
- It is not recommended to work in the immediate vicinity of the inverter with an angle grinder or other tools, which are a source of metal dust that can damage welding equipment.
- There should be enough free space around the inverter, and its body should not be covered with cloth or other objects. This rule must be followed in order to ensure effective ventilation of the equipment.
- Inverters react very critically to high humidity, so they can be used and stored in dry rooms. It is also necessary to protect them from direct exposure to precipitation.
- If you brought the device into a warm room from the cold, you can start using it only after the condensation on the internal elements has completely dried (about 2 hours).
- The inside of the inverter should be regularly cleaned of accumulated dust, this will extend its life and minimize the risk of sudden failure.
Budget inverter models
Resanta welding equipment is presented in a wide range, but today we will tell you about the SAI line. The SAI welding inverter is an inexpensive compact device that will appeal to a novice welder or summer resident. Devices of this class are not intended for professional work, but are suitable for study or minor repairs.
Resanta SAI 140
Price: ≈5000 rubles (≈75$)
The Resanta SAI 140 inverter welding machine is designed for RDS welding with coated stick electrodes. This is the most budget and least powerful device in the AIS line. This inverter produces up to 140 Amps.
This is a good choice to start learning if you are on a budget. But over time, we recommend purchasing a more powerful inverter. The device is equipped with anti-stick and hot start functions. They will help you light the arc without any problems and make welding easier.
Resanta SAI 160
Price: ≈5400 rubles (≈80$)
The welding inverter Resanta SAI 160 is no different from the SAI 140, except for power. Here you already have 160 Amperes available. If you choose an inexpensive inverter, we still recommend paying an additional 400 rubles and buying this model. It will give you a little more options.
SAI 160 is just as light, silent and has a “hot start”.
