On sale you can find a huge number of all kinds of welding machines with different parameters to suit any budget. It is very easy to get confused in this assortment, so many, before purchasing a particular model, look for reviews about it both on the Internet and from friends.
Today we will talk about the Resanta SAI-220 PN device, you will find out what reviews there are about it, what its advantages are, and how to use this device correctly. It is quite popular among consumers, so if you want to opt for it, additional information will only be useful.
Operating principle of the device "Resanta SAI-220 PN"
The operating principle of the Resanta apparatus of this modification is as follows:
- phase-to-phase voltage of 0.4 kV alternating current and standard frequency equal to 50 Hz is converted to direct 400 V;
- as a result, the inverter converts into high-frequency voltage, which is rectified by means of a diode bridge;
- unlike welding transformers equipped with a simple rectifier, in the Resanta SAI-220 PN apparatus, which is an inverter product, the alternating voltage has three stages, and the constant operating voltage is 90 percent versus 60, respectively, in the transformer;
- The device produces constant voltage even at 95% fullness, which makes it possible to maintain a uniform welding arc more stable than other welding devices.
Repair of inverter welding machines
Craftsmen know how to repair everything. And no one has anything against this hobby. But repairing the Resanta SAI-220 PN is far from an easy task. Its high technical characteristics are ensured due to the fact that all the components of this welding machine are very precisely balanced. No inverter will fit into it. No, if there is another inverter that allows the device to pass a current at the low side output of about 220 A, then the device will work, but the stability of the welding arc will decrease. This is clear. A mismatch between the input and output resistances of the inverter and the power current rectifier unit will significantly reduce its durability. And this is true for each node.
If the SAI welding machine fails, then it is best to contact a service center, where the components that have become unusable will be replaced with original ones. It should be noted: if you do not allow moisture and metal dust and shavings to get inside the device, if you do not allow long-term overheating of the components, then the device will faithfully serve for decades.
Among the inverter welding machines that are difficult to classify clearly as industrial or household, there is the Resanta Sai 220 inverter. Its characteristics differ from those of the Resanta line due to its high values of maximum welding current.
This gives you more room to work efficiently, as it allows you to weld more consistently and perform serious welding using thick electrodes.
Advantages of the device "Resanta SAI-220 PN"
The welding device "Resanta SAI-220 PN" has the following advantages:
- there is a current regulator on the welding arc;
- ensuring continuous long-term operation of the device due to the presence of intensive forced cooling of the device, which passes a large current;
- “anti-sticking” function, which automatically reduces the operating current in case of electrode sticking when igniting the arc. When the electrode comes off, the device restores the previously configured parameters;
- hot start function, improving the process of igniting the arc with a short pulse and an increased operating current parameter;
- the arc burns steadily, there are no unexpected extinctions, as when working with a conventional transformer.
And of course, an important factor is the positive reviews about the Resanta Sai-220 PN device from both amateurs and professional welders . Many reviews from professionals focus on the fact that inverter-type welding machines such as “Resanta” greatly facilitate welding work and make it of higher quality.
Operation of inverter welding machines
Basically, the reviews for the Resanta SAI-220 welding machine are the most positive and flattering. But there are those that say that when working on it in wet weather, it is “pinched” by electric current. It is worth reminding such consumers once again that working with any electrical devices and instruments is fraught with danger if you do not follow basic safety rules. A device weighing only 5.5 kg during welding with an electrode with a diameter of 5 mm has a power of 15 kW, which is enough to throw a stone weighing 10 kg to the height of a three-story building. Therefore, there is no need to be extra careful when working with energy-intensive equipment.
All precautions and safety precautions described in the instructions for the device must be strictly observed. If there is no RCD and a three-wire power supply system with a stationary grounding device, then it is imperative to have a portable temporary grounding and use it.
Technical characteristics of the device "Resanta SAI-220"
The technical characteristics of the Resanta devices are designed so that the worker can use a wide range of input and output voltages and stably maintain the operating current in the arc. And good arc control is ensured by intensive cooling of the soul, which is maintained for a long time.
Other characteristics of the “Resanta SAI-220 PN” look like this:
- input voltage ranges from 140 to 240 V, respectively;
- the maximum current consumption at the input is 30 A;
- no-load voltage – 80 V;
- voltage during arc burning – 28.8 V;
- working welding current – from 10 to 220 A, respectively;
- continuous load of the device – 154 A;
- electrode diameter – from 1.6 to 6 mm;
- protection class - IP21;
- The optimal ambient temperature for Resanta operation is 10 degrees below zero – 40 degrees above zero.
You cannot use the Resanta SAI-220 device outdoors during precipitation.
Why is it convenient to buy at 220 Volt?
- We have a large selection of related products: welding helmets, power cables, terminals, gloves, workwear and much more.
- We quickly deliver orders to your nearest pickup point or directly to your home.
- Pay for the goods in the way that is convenient for you: by card, electronic wallet or cash upon receipt of the order.
Inverter SAI 220 160-240V 10-220A 1.0-5.0mm
The Resanta SAI 220 inverter welding machine is used in manual arc welding with coated stick electrodes; it is lightweight and has compact overall dimensions.
The device is protected from overheating. The welding current is adjustable from 10 A to 220 A. Reliable operator protection is provided - protection class IP21. Equipped with the “ANTI STICK” (anti-sticking) and “HOT START” functions (hot start). Built on IGBT transistors.
SPECIFICATIONS:
Operating voltage range, V: 220 (+10%; -30%) Open circuit voltage, V: 80 Arc voltage, V: 28 Load duration, %: 70% 220A Protection class: IP21 Connectors for wires D35.
ADVANTAGES:
Built on IGBT transistors; Equipped with the “ANTI STICK” (anti-sticking) and “HOT START” (hot start) functions; Forced tunnel cooling; The presence of a practical strap for easy transportation of the device; Overheat protection; The high-performance device does not require maintenance; Protection class IP21.
EQUIPMENT:
Inverter; Cable with electrode holder (2m); Cable with grounding terminal (1.5m).
Today, the welding machine market offers a huge selection of different models and brands of manufacturers. One of the presented brands that should be given attention is a modern welding machine with an inverter “Resanta SAI-220 PN”.
Design of the Resanta SAI-220 apparatus from the outside and inside
the Resanta inverter apparatus , in front of which there is a panel. It contains elements such as:
- operating current regulator;
- “Network” and “Overheat” indications;
- power connectors for DC cables.
Since Resanta is equipped with a forced cooling system, it is strictly forbidden to block the ventilation hole on the body.
The overheating protection system is activated when the light bulb located on the panel lights up. Next to the DC work cable connectors on the chassis are plus and minus symbols for the power terminals . There is also an off switch and an indicator light. There is a strap at the top that helps you conveniently transport the device.
The internal structure of the Resanta SAI-220 PN device includes the following key components:
- transistor rectifier power unit with standard and reduced voltage;
- power inverter unit for converting direct voltage current into high-frequency alternating current;
- high-frequency power transformer to reduce the input voltage to the required and safe level;
- high-frequency rectifier power unit for current correction with a reduced voltage transformer;
- stabilizing choke, smoothing out the pulsation of the rectified stabilizing current of the operating voltage for welding.
Semiconductor elements have excellent properties that ensure stable dynamics of arc combustion.
Protective properties of the Resanta device
One of the features of the Resanta SAI-220 device is its safety of use not only for welding professionals, but also for beginners and amateurs. Thus, the conductive parts of the device are insulated .
And the device is connected to standard equipment via a flexible cable equipped with double insulation, which can withstand voltages of up to 3 thousand V for several minutes. From the inside, the device components are tightly fixed to insulators, which under no circumstances should be contaminated with metal dust or shavings. Also, liquids must not be allowed to get inside the device so that the phase does not short-circuit to ground. Objects up to a maximum thickness of 12 mm may be allowed to enter.
How to prepare the Resanta SAI-220 device for operation
According to the instructions and reviews from professionals, the device must be connected from the low voltage operating circuit assembly:
- check the off position of the “network” switch;
- we connect welding cables with the required cross-section to the working power terminals;
- check the connection of the electrode holder;
- connect the second power work cable to the product you will be working with;
- connect the body of the Resana device to a stationary type grounding device; if there is none, then you need to prepare a pin with a length of 140 cm, which is driven into the ground;
- We connect the device to the network and supply it with standard voltage. Turn it off by turning the “power” switch;
- we set the required current mode using regulators for the operating direct current;
- We check the device for short circuits in the power working cables.
Operating modes depend on the diameter of the electrode used and the type of work.
Safety rules and operating features of the device "Resanta SAI-220"
If you study the reviews of users of this device, you can conclude that it is very convenient and safe. However, its use is subject to compliance with the following safety regulations:
- if there is no grounding through the socket cord, you need to install portable grounding;
- the welding site must have good ventilation, since this process releases harmful and toxic substances;
- you need to wear a special suit to prevent burns;
- You need to wear a mask or welding shield on your face;
- Observe fire safety measures according to the instructions.
Despite the fact that reviews of the device are mostly positive, some contain some warnings related to the operating features of the Resanta device. For example, in damp weather the device may “pinch” with current. You also need to be extremely careful when working with the device and not deviate from the rules set out in the instructions.
Safety precautions when operating AIS
If we analyze the reviews of welders who have worked on it for a long time about the Resanta SAI-220, we can conclude that this device is very safe and easy to use. However, the following safety precautions must be observed:
- If there is no grounding through the outlet cord, then installing a portable grounding is a must.
- The place where welding work is carried out must be well ventilated, because welding produces a lot of toxic and harmful gases.
- To avoid burn injuries, the welder must work in a special welding suit.
- To protect your eyes and face, be sure to use a welding shield or welder’s mask.
- Fire safety measures when carrying out welding work must be carried out in full in accordance with the standard instructions, from which deleting items is not permissible.
Features of device repair
Many home craftsmen have become adept at repairing everything without exception, however, it will be extremely difficult to repair the Resanta device. All components of the device are very precisely balanced, so a “foreign” inverter or other spare part will not fit into it. A “foreign” body will interfere with the high-quality operation of the device .
That is why, if the Resanta breaks down, it is better to take this device to a special service center, where it is possible to replace non-working spare parts with new original ones. In order for the device to last as long as possible, do not allow chips and dust to get inside it, try not to overheat the components, then you will not have to repair anything for several decades.
The Resanta SAI-220 device has gained immense popularity due to positive reviews, its compact size and ease of use . Also, the price of the device is quite affordable and ranges from 150 to 250 USD. for a unit. The final cost depends on what semiconductor elements and blocks are used.
The manufacturing company carefully studies the feedback and wishes of consumers, due to which the quality of the device is constantly improved, and the device itself is modified.
Inverter welding machine on the Russian market
Inverter welding machines are becoming increasingly popular among consumers. They have become especially popular among non-professionals due to their low weight (up to 6 kg), ease of operation and ease of use. Their prices are quite affordable: from $150 to $250 per device.
For the Resanta SAI-220 PN, the price ranges from $210 to $240 for various modifications, the execution of which depends on the semiconductor elements and blocks used. Ease of maintenance allows SAI to gain a leading position among similar products.
The manufacturer constantly listens to the opinions of its customers and monitors the dynamics of not only sales, but also reviews of its product. For this purpose, a special website has been created on the Internet, where every interested and caring person can leave their feedback. These reviews are of interest not only to the manufacturer, but also to other consumers.
Customer reviews about the device "Resanta SAI - 220"
Below we suggest reading some customer reviews about the use of the Resanta SAI-220 welding device.
The device is simply a great thing and has a huge number of advantages compared to welding transformers. First of all, this is the compactness of the device. There is also a system against sticking of electrodes, thanks to which even a beginner can use it. It’s also nice to have an anti-overheating system that actually works. It doesn’t work in a transformer; the device simply turned off when it got too hot, and we had to wait for it to cool down. I am pleased with the affordable price and wide range of models, from household to professional. The only negative is that the wire for connecting to the network is very short.
Novel
I have been using this device for two years now, and there have been no breakdowns yet. The short, awkward wires were extended, but otherwise there were no problems. The arc holds perfectly when welding with three or four. The device weighs little, is easy to carry, and is also quite strong. I recommend to all.
Nova
For small jobs this device is the most practical.
During the construction of a building with several floors, I had to work with it for several hours without a break and in the heat, but the overload light did not even light up. At that moment, the device was already a year and a half old. It can withstand heavy loads, the device weighs less than 5 kilograms, and has a good level of protection. The case is made of metal, but the cables are short, I lengthened them, and the voltage did not weaken. Pulls heavy electrodes well. I do not recommend using it on heavy metal structures so that it does not burn out and nothing falls on it. But welding parts of a fence, car, heating pipes is the best!
Fedor
