Resanta welding machines. Resanta welding machines Inverter welding machine sai 220 characteristics

Inverter welding machine SAI-220 Resanta is intended for manual electric arc welding with a covered electrode.

The compact design, as well as the low weight of the device, allow the welder to move throughout the entire area of ​​the work being performed.

Design and principle of operation of the SAI-220 inverter

Inverter welding machine SAI-220 made in a metal case. The front panel has a welding current regulator (Fig. 1, item 2), a “network” indicator (Fig. 1, item 3), an “overheating” indicator (Fig. 1, item 4), as well as power connectors for connecting welding cables (Fig. 1 pos. 5,6). Welding machine SAI-220 is equipped with a forced ventilation system 3, therefore, it is strictly forbidden to cover the ventilation holes in the housing with anything.

Principle of operation welding machine SAI-220 consists of converting alternating mains voltage with a frequency of 50 Hz into a direct voltage of 400 V, which is converted into high-frequency modulated voltage and rectified. To regulate the welding current, pulse-width modulation of high-frequency voltage is used.

Inverter SAI-220 has protection against overheating - if the protection is triggered (the light on the front panel lights up), you should make sure that there is no short circuit in the working cables and stop work without turning off the device for at least 5 minutes.

Welding machine SAI-220 equipped with the “ANTI STICK” (anti-sticking) and “HOT START” functions (hot start)

When starting welding, it is necessary to ignite the arc. This often leads to sticking of the electrode on the SAI-220 inverter. Welding inverter SAI-220, equipped with the “ANTI STICK” function, automatically reduces the welding current when the electrode “sticks”. Subsequently, after tearing off the stuck electrode, inverter SAI-220 resumes the set welding parameters.

To ensure better arc ignition at the beginning of welding, inverter SAI-220, equipped with the “HOT START” function, automatically increases the welding current. This will greatly facilitate the start of the welding process.

*Note. The figure shows the SAI220 inverter model. The panels of other models look similar.

1. Switch "Network"
2. Welding current regulator
3. Network indicator
4. "Overheat" indicator
5. Power terminal "-"
6. Power terminal "+"

SAI-220 delivery set

• AIS "Resanta" 1 pc.
• Cable with electrode holder 1 pc.
• Cable with grounding terminal 1 pc.
• Product passport 1 pc.
• Packing 1 pc.

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Features and Benefits

• Inverter welding machine SAI-220 runs on household power and does not require a special connection method.
• The inverter system uses a relatively small transformer complete with IGBT transistors and ensures a small size and light weight of the device, which allows it to be easily moved to the location required by the operator. There is a special convenient shoulder strap for this purpose.
• The device is equipped with warning elements against dangerous overheating, which makes its operation safe and reliable.
• The unit has the functions “anti-sticking” (ANTI STICK) and “hot start” (HOT START), and the duration of its activation is 70%.
• A high-quality, durable housing protects the components of the welding machine from damage and at the same time ensures reliable cooling of the working transformer.
• The ability to convert high-frequency current (hence the small parameters of the transformer) and a wide range of control of the welding current power are the advantages of this device.
• It is possible to use AC or DC electrodes.
• The device does not require special training to connect and use it. It is enough for the user to have initial knowledge and practice.

general description

The Resanta SAI-220 device is a portable inverter-type device for manual welding, capable of providing full-fledged welding work at the household (and not only) level. The unit is simply connected to a household power supply with a voltage of 220 V and is designed to work with coated welding electrodes and a metal core diameter of up to 5 mm inclusive.

Welded joints of metal elements are quite common both in production and in domestic conditions. Welding transforms different iron elements into a single, strong, non-demountable structure, the strength of which is incomparable to anything else. As a rule, this connection method is used to obtain the most reliable connection where it is impossible or impossible to use a threaded connection. Manual welding is quite widespread both in everyday life and in production (any construction, installation, repair work, etc.). And if earlier, to carry out such work, bulky and heavy units were required, then with the advent of inverter devices, these shortcomings were eliminated.

The described Resanta SAI-220 unit is one of the most convenient and compact tools for performing work of this kind. He can do almost any welding operation. Light weight and dimensions, a comfortable and durable shoulder strap allow the welder to easily move the device to the location required for work.

The system includes working cables (power with electrode holder and grounding cable). The length of each working cable SAI-220 is 2 meters. The system also has a power cable (170 cm) with a plug. If necessary, you can use an extension cord of the appropriate cross-section.

A special welding helmet and other personal protective equipment must be purchased separately.

To make the welder’s work easier (especially for beginners), the designers of Resanta SAI welding machines have created such a useful function as a “hot start” (HOT START). At the moment the electrode is sufficiently close to the elements being welded, the system automatically creates an increased operating current pulse, which contributes to the rapid formation of an electric arc. At the same time, the welding process is greatly facilitated.

The “anti-stick” function (ANTI STICK), also characteristic of all Resanta SAI devices, in turn is designed to facilitate the work of the welder, eliminating the phenomenon of electrode sticking during the arc burning period. In this situation, the device automatically reduces the welding current, facilitating easy tearing of the electrode. Immediately after this, the system restores operating parameters.

The main part of Resanta welding machines is made on the basis of high-tech IGBT transistors. As a result, it was possible to achieve a significant increase in the service life of the system, as well as significantly reduce its dimensions and weight. The transistor board is typically located in a vertical plane, which prevents the accumulation of dust and, as a result, unnecessary overheating.

Another characteristic feature of the system is the on-duration (ON). This is a value that characterizes the ability of the device to operate continuously over a certain period of time. The basis was a 10-minute time interval. For the SAI-220 device, this parameter is 70% at maximum load. This means that welding can be carried out continuously for 7 minutes out of 10 and 3 minutes - a break at idle.

The welding machine of this model has a fairly significant open circuit voltage (85 V). This facilitates easy and quick ignition of the electric arc, which allows you to work with non-ferrous metals.

The creators of the welding machine also took care of its safe use. The main danger for devices of this kind is overheating, which can cause breakdown of the unit and other undesirable consequences. Resanta SAI-220 has a special warning system, which turns on (before dangerous overheating) an emergency indicator light. When the indicator lights up, it indicates the need to pause welding work. A 5-minute break is enough to restore the unit’s functionality. There is no need to disconnect it from the power supply.

Design and functionality

The body of the Resanta SAI-220 welding machine has a compact rectangular shape, dimensions 265x100x150 mm and is made of high-quality sheet metal with a protective coating. The flat base of the case allows it to be placed stably on any surface, even with a slight slope. There are specially made slots on the sides of the housing through which ambient air can easily circulate, cooling the main transformer. The electrical safety of the housing meets the criteria of class IP 21 (protection against the ingress of foreign objects, but work should be done in a fairly dry atmosphere).

The switch and power cable are located on the rear panel of the case, and the control panel is located on the front panel. It is very simple, understandable and will allow even a beginner to understand it. Here the designers placed a rotary regulator for operating current from 10 to 220 A, a network indicator and an indicator warning of the approach of emergency overheating. On the same panel there are terminals for connecting the power cable with the electrode holder and the cable that ensures the closure of the electrical circuit for the welding process. At the top of the case there are fastenings for a shoulder strap.

All the components of the welding machine are located inside the housing, ensuring its safe functionality within the limits of technical capabilities. The main element in this matter is a conversion transformer with special equipment that converts alternating current with a frequency of 50 Hz (power grid) into direct current, followed by its reverse conversion into alternating current, but with a much higher frequency (more than 20 kHz). Thus, it is possible to increase the current to 220 A at a voltage of 85 V. These transformations make it possible to achieve significant quality of the weld, which is especially important for the final result. The transformer has a finned light alloy surface that promotes intense heat transfer and efficient cooling of the element. This is also facilitated by two built-in fans.

Reliable operation and safety of the Resanta SAI-220 welding machine is ensured by a special protective system. Temperature sensors detect the approach of dangerous overheating in advance and warn the user by turning on the emergency indicator.

The principle of welding is that between the edges to be joined and the electrode close to them, with the help of a working current, an electric arc lights up, heating them to the melting temperature. The molten electrode firmly welds the joined edges together, forming a weld seam. The hot start and anti-stick functions are provided by automatic adjustment of the operating current. The initial approach of the electrode to the edges provides an increased impulse for rapid ignition of the arc. Then the current drops sharply, preventing the electrode from sticking. The special coating of the electrode consists of a special flux and prevents direct contact of the melt with oxygen and nitrogen impurities contained in the surrounding air. The quality of the weld directly affects the strength of the joint, so it must be checked. To do this, you should beat off the slag deposit with a hammer and make sure that the seam is uniform and intact.

Preparation for work and safety measures

The Resanta SAI-220 inverter welding machine is not complicated. Almost any adult can prepare it for work and operate it. Initially, you should take into account and ensure some safety points in order to prevent electric shock and other unpleasant consequences. The device is grounded through the power cord, so you should make sure that the outlet has the appropriate equipment. After the working cables have been connected to the required terminals, you can plug the power cable into the outlet (the “mains” toggle switch should be off and the operating current regulator should be in the lowest position). Now you can turn on the device and set the required operating current. After completing welding work, turn off the device in the reverse order.

If welding work is carried out not outdoors, but indoors, care must be taken to ensure that it is well ventilated and free of flammable materials and gases. When starting work, the user must use protective equipment (gloves, headgear, special clothing and a special mask to protect the eyes and face). In addition, it is necessary to strictly adhere to fire safety rules and requirements for the safe operation of equipment of this kind.

The manufacturer of the welding inverter Resanta SAI-220 provides a guarantee for its impeccable operation for 24 months from the date of its official sale.

RESANTA welding equipment has an excellent combination of price and quality and is connected to a regular household electrical network without additional devices. It is used both in professional activities during construction and installation work, and in the home. With its help, you can reliably connect metal parts and plastic pipes to each other, as well as cut products made of ferrous and non-ferrous metals.

The welding equipment provides a wide range of additional functions and properties, such as: automatic increase or decrease of welding current, non-stick coating, overheating protection. They allow even craftsmen with minimal knowledge and experience to effectively use welding machines, plasma cutters and pipe soldering irons.

Types of welding equipment RESANTA

Inverter welding machines.

Equipment for welding polypropylene pipes.

Inverter plasma cutters.

Welding masks.

The range includes conventional and semi-automatic welding machines with functions of anti-sticking of the electrode and simplified ignition of the arc. Inverters installed inside ensure stable and economical operation from a single-phase network. In addition, the equipment provides automatic protection against excess loads.

Welding soldering irons are used for installing polypropylene pipes using fittings. They are equipped with heat regulators and a protective coating on the heating elements, which provides significant control during operation. The sword-shaped shape of the working part of the soldering irons allows welding of polypropylene pipes in hard-to-reach places and in confined spaces.

Plasma cutters are used to cut carbon steel and non-ferrous metals. Using an inverter plasma cutter, you can cut sheets up to 12 mm thick, depending on the basic technical characteristics of the selected model.

RESANTA welding masks have an automatic polarizing layer. Darkening occurs immediately after ignition of the arc to provide eye protection from flash, ultraviolet and infrared radiation. The filter sensitivity, degree of darkness and delay can be adjusted manually.

You can get more information, answers to your questions, learn more about the features of the model and buy RESANTA welding equipment at a competitive price in our retail store or online store.

The Resanta SAI 220 welding machine is used for welding metal parts using an electric arc. Lightweight and not bulky, the unit is equipped with a durable strap for carrying the device. Not afraid of overheating. The welding current varies from 10 A to 220 A. It has anti-stick and quick start systems. The circuit is based on IGBT transistors.

Basic parameters

• Maximum power – 6.6 kW;
• Maximum current value - 220 A;
• Minimal. current value – 10 A;
• PV at max. current – ​​70%;
• Voltage – 220 V;
• Minimal. input voltage – 140 V;
• Electrodes (wire) – 2 – 5.0 mm;
• TIG welding - no;
• Dimensions – 190x325x315 mm;
• Weighs – 4.9 kg.

Comes with:

• carrying strap;
• cable with electrode holder;
• grounding cable;
• box.

Advantages

• the welding current varies from 10 to 190 A, which guarantees more accurate welding and neat seams;
• protection from damage caused by external influences, thanks to a durable and wear-resistant metal case;
• “anti-sticking” and “quick start” systems.
• efficient air cooling;
• The plastic handle makes it easy to carry the unit;
• durable strap for carrying the device;
• protection from strong heat;
• does not require servicing.

The welding inverter Resanta SAI 220 can be purchased in our online store at an affordable price. Delivery in Moscow within the Moscow Ring Road - 300 rubles, check the cost of delivery in the Moscow region with the operators, the cost of delivery in Russia depends on the remoteness of your region.

Our managers will be happy to answer your questions and help you choose the right products.