Until recently, various kinds of welding work were carried out mainly with the help of bulky transformer equipment. Such devices could be used exclusively in production. With the advent of inverters, craftsmen got the opportunity to manufacture and repair metal structures by welding, including in domestic conditions. Such equipment weighs an order of magnitude less than transformer and at the same time differs in good performance. There are many brands of devices of this variety in the modern market. For example, the Kedr welding inverter of domestic production is considered a very good model .
MMA modification
Most of the Kedr devices supplied to the market today belong to the MMA class (manual) . They are intended mainly for use precisely at home. However, in some cases, the inverter welding "Cedar" MMA can also be used in production.
One of the features of MMA devices of this brand is that it can function even under reduced voltage. In this case, there is absolutely no danger of equipment breakdown. The minimum acceptable indicator for the Kedr inverters operating voltage is 140 V. Thus, you can use them if necessary, including in the garage or in the country. According to the manufacturer, it is allowed to connect such devices not only directly to the outlet, but also through an extension cord up to 50 meters. Therefore, with the help of such equipment it is possible to carry out work in any part of the courtyard of a country house.
MMA Inverters Overview
There are several models of MMA brand "Cedar":
- MMA-160. This entry-level inverter is compact in size. It is suitable only for domestic use. It is impossible to use the Kedr MMA-160 welding inverter for metal cutting.
- MMA-180. It is an improved version of the MMA-160. It has a lot of power in comparison with this model.
- MMA-180F. It features an increased efficiency of the converter and the presence of additional adjustment.
- MMA-180 GDM. In this model, among other things, a digital current indicator is provided. Such an inverter can also be used for welding sheet metals.
- MMA-200. It is this model in the family that is the most popular. The welding inverter "Cedar" 200 is characterized by a good current margin and a relatively low cost.
- MMA-200GDM. This semi-professional model is complemented by TIG mode and a digital display.
- MMA-220 and 220F. Inverters of this modification are a more powerful version of the MMA-200. Version F, among other things, can be used for argon welding.
- MMA ARC250. This is the last, most productive model of this brand. At very high power, the Kedr 250 welding inverter is compact in size. You can perform work with it both at high altitude and in inaccessible places. This model is used mainly in production and in construction.
How to use
It is not difficult to make welding work using the Kedr MMA inverter . Ease of use is one of the undoubted advantages of this domestic equipment. You can cook seams with this machine without having any professional skills. This became possible due to the availability of such additional convenient functions as ArcForce, HotStart and AntiStick at the Kedr inverter . Welding on MMA devices is carried out using simple piece electrodes. The current in this equipment is configured in a few seconds.
In some cases, the welding and inverter “Kedr” MMA (not all modifications) , among other things, can also be used to work with contact arc excitation in a shielding gas medium with a non-consumable electrode.
Welding-friendly features
Anyone can learn to quickly perform high-quality seams with the help of Cedar inverters. The ArcForce function , available on all models of this brand, is designed to prevent the electrode from sticking to the part. When the arc length in the inverter decreases, the current strength automatically increases.
The AntiStick feature actually complements ArcForce. If the electrode nevertheless sticks to the part, the Kedr welding inverter simply automatically stops the current supply. As a result, the melting of the electrode stops.
The Hot Start function provides arc ignition in the device at the beginning of work. Due to its presence, the melting of the tip of the electrode occurs very quickly. In the future, the device automatically reduces the current to the set value.
What metals can be cooked
You can work with the Cedar inverter with a variety of materials. Most often, on this equipment, of course, welding of seams on steel is performed. But if necessary, Kedr devices can be used to work with copper or some other non-ferrous metals.
Specifications
The performance of the Kedr inverter MMA inverters is very good. This is due, of course, primarily to their excellent technical characteristics . The efficiency of Cedar inverters usually exceeds 85%. The characteristics of some models can be found in the table below.
Inverters "Cedar"Parameter | MMA-200 | MMA-160 | MMA-180F |
Power | 7.2 kVA | 4 kW | 7.2 kVA |
Maximum current | 200 A | 160 A | 180 A |
Electrode diameter | 1.6-4.0 mm | 1.6-3 mm | 1.6-4 mm |
Weight | 6 kg | 3.5 kg | 3.5 kg |
The welding inverter "Cedar" 250 has such technical characteristics:
- power - 12.7 kVA;
- maximum current - 250 A;
- electrode diameter - 1.6-5 mm;
- weight - 17 kg.
Inverters MIG, MAG and TIG
Most often on the market you can find devices of exactly the MMA class of this brand. However, in specialized stores there are MIG models, as well as TIG and MAG from this manufacturer.
The TIG Cedar welding inverter is designed to work with ferrous and non-ferrous alloys in argon using tungsten electrodes. Such models include, among other things, the high-frequency ignition function.
MAG and MIG are welding machines designed to work with cast iron, steel, stainless steel and non-ferrous metals in a carbon dioxide and inert medium (argon), respectively. Such units are used mainly in the assembly of light metal structures and in car body repair.
Welding inverter "Cedar": consumer reviews
Welders attribute the advantages of devices of this brand in the first place:
Digital displays in models above MMA-160 at Kedr inverters, according to consumers, are quite bright. Therefore, it is very convenient to adjust the current when working with them. The only thing is that the scale itself in the inverters of this brand is not too clear.
The advantages of this equipment are welders and quite a high-quality assembly, a convenient burner, the presence of a gearbox with heating. In addition to the inconvenient current adjustment scale, some drawbacks of inverters of this brand are considered to be that the cables supplied with them are quite short and at the same time inflexible.