If today we take any mechanism used in industries such as agriculture, construction, industry, or even any household appliance, then the electric motor will certainly appear in its details. This unit assembly is very important. It is from general industrial electric motors that the success of virtually any operation depends.
Application of aggregates
Currently, such devices are used very widely. They are used in almost all systems where open or closed mechanisms are involved. The use of a general industrial electric motor is possible in the presence of an electric network with such voltages as 220/380/660 V. In this case, the current frequency should be equal to 50 Hz.
It is also important to say that these units may differ from each other in their design. Depending on their design, such electrical mechanisms can be used in such aggressive environments as explosive, wet, dusty, as well as in various other adverse conditions. For this reason, when choosing a general industrial electric motor, it is necessary to take into account its design and the place in which it will be installed.
Performance Features
The first thing to understand is that, by design, all electric motors initially differ in the structure of an asynchronous AC consumer with a squirrel-cage rotor. This design feature of common industrial electric motors excludes the possibility that a spark will form inside. And this, in turn, makes it possible to use units in hazardous areas, as well as where air humidity reaches 98%.
Marking
Currently, in the manufacture of such devices, enterprises are guided by GOST 15150, which states that the electric motor should be made of a combination of any metals. It can be steel, cast iron, duralumin. Also, these units are divided into four main types according to their design features, which is always reflected in the labeling of the device:
- Y - means that the engine must be located in a moderate climatic zone or has a macroclimatic design.
- UHL - this marking indicates that a general-purpose electric motor can be used in a moderately cold zone.
- CL - this marking indicates that installation of the unit is possible in the cold zone.
- T is the last marking that shows that the engine has a tropical design.
It is also important to note that a letter is often followed by a number. These symbols indicate the specific location of each electric motor:
- 1 - the engine can be operated outdoors;
- 2 - use this type of aggregates, it is necessary under a protective canopy, which shelters from adverse factors with direct exposure;
- 3 - operation of the electric motor should be carried out indoors without ventilation;
- 4 - the use of the device is carried out indoors with temperature control.
AIR motor
AIR 80 V4 common industrial motors are asynchronous closed models in their design, which are used in all industries. Most often, they are installed as an electromotive part for industrial devices, mechanisms or machines. The design of such models, as well as the conditions for their operation, are regulated by GOST 2479-79.
The advantages of these machines include the following:
- ability to withstand short-term mechanical overloads;
- the design of such a mechanism is very simple;
- the launch of a general industrial AIR motor is simple, as is the automation of the entire process;
- maintaining speed in almost any situation;
- the efficiency (efficiency) of the unit is increased to 75% due to the fact that the manufacturing accuracy of the product is high;
- during assembly, high-precision bearings are used, which reduces the noise level from the device to 55 dB;
- degree of protection of the IP54 electric motor, which provides increased protection of the unit from water and dust;
- casting of the device body is made of gray cast iron;
- the level of reactive currents is reduced to 0.86, which implies a decrease in the risk of network overvoltage.
Technical specifications
The asynchronous general industrial air motor has a rotor speed of 1500 rpm, and its power is 1.5 kW. The operability of the device is ensured by an electric network with alternating current with a frequency of 50 Hz. If this indicator is 60 Hz, then it is necessary to purchase an engine under the order. This unit is intended for operation in a temperate climatic zone. However, it is possible to purchase an engine with a different design: for cold climates (HL), for marine (OM2), for tropical (T). In addition, there is the possibility of acquiring a general industrial AIR motor with chemical protection, with increased accuracy, etc.
Three phase motors
Three-phase models of electric motors have the following features:
- energy indicators, such as efficiency, as well as mechanical (starting and maximum moments) are very high;
- in the manufacture, conversion technologies are used, as well as low-noise bearings, which fully ensures the mean square value of the vibration velocity, both normal and increased;
- degree of protection of three-phase asynchronous common industrial motors - IP54;
- such engines can be produced with different design features, for different climatic conditions, and can also be equipped with protection from high or low temperatures;
- Also, such models are distinguished by modern design and ergonomic design.
When creating these units, specially selected materials are used, as well as special components, which ensures the availability of high and stable energy indicators.
Engine purpose
Three-phase asynchronous general industrial electric motors with a squirrel-cage rotor are intended for use in various areas of industry and agriculture. There they are used to drive machines, pumps, compressors, fans, mills, etc. It is also worth noting that this series of electric motors in their installation and mounting dimensions is completely interchangeable with such a series of engines as 4A, 5A, AIR, 2AI, 4AM.
It can be added that the production of such models is carried out using materials and technologies that are used for the manufacture of explosion-proof engines.
Motor performance
The production of these devices is carried out under the rated voltage of the electric network - 220, 380, 660 V, as well as under the rated frequency of alternating current 50 Hz. However, it is possible to order special electric motors that will work with a different voltage, as well as with a frequency of 60 Hz. It is also worth noting that the industrial design of electric motors involves three output ends. However, under the order of the consumer, it is possible to manufacture an assembly with six lead ends. The connection of the winding in such general-purpose electric motors is most often a "star" or "triangle".