Russian manufacturer and supplier of electrical products company Eldin In addition to creating highly efficient electric drives of general industrial orientation, it also occupies a leading position in the development of multi-speed electric motors. Multi-speed electric motors produced by this brand were created on the basis of single-speed drives with modified winding circuits. As a rule, in electric motors of this type, two types of windings are used: pole-switched (having an electrical connection between the poles), and separate (each pole has its own single-speed winding). These types of windings are not electrically connected to each other. Further, in terms of power and torque, multi-speed electric motors are divided into two main types: drives that have a constant load moment on the shaft (that is, the load moment of which does not change when the rpm changes), as well as drives with fan characteristics that are used in fans and pumps (the load moment varies quadratically depending on the change revolutions).
Multi-speed electric drives of the brand Eldin The RA series are supplied with an embedded key. It should be noted that before using multi-speed electric motors of this series, it is necessary to balance drive elements such as a pulley and clutch mounted on the shaft, taking into account the balancing of the rotor of the engine itself. All drives of the RA series meet the requirements of customers in terms of application, high technical data, compliance with standards and requirements for environmental protection, and at the same time high operational reliability. As a rule, multi-speed electric motors of the above series, Multi-speed electric motors of the brand Eldin The RA series can be equipped with radial fans made of plastic or aluminum alloy, operating regardless of the direction of rotation. Standard painting Depending on where the multi-speed electric drive will be installed (room, street), you can order its painting. All models of multi-speed electric motors of the brand Eldin The RA series comply with international standards.
Technical parameters of Eldin multi-speed electric motors of the RA series:
- Dimensions: from 71 to 355 mm;
- Type of rotor: short-circuited;
- Voltage: up to 380 V;
- Rated power: from 1.5 to 55 kW;
- Rated speed: from 500 to 3000 rpm;
- Rated current: from 3.9 to 102 A;
- Frequency: up to 50 Hz;
- Number of poles: from 2 to 8;
- Insulation class: F;
- Type of cooling: IC411;
- Type of mounting design: IM1001;
- Protection class: IP54, IP55.
Technical characteristics of standard sizes of Eldin multi-speed electric motors of the RA series:
Type electric drive | Power, kW | Speed, rpm | EFFICIENCY, % | The coefficient. capacities | Armature current, A |
RA90S4/2 | 1.5 | 2820 | 69 | 0.85 | 3.9 |
RA100LA4/2 | 2 | 2800 | 71 | 0.87 | 4.8 |
RA100LB4/2 | 2.65 | 2865 | 78 | 0.84 | 6.1 |
RA112M4/2 | 4.6 | 2900 | 81 | 0.91 | 9.5 |
RA132S4/2 | 6 | 2920 | 84 | 0.90 | 12 |
RA160L4/2 | 14 | 2950 | 85.5 | 0.90 | 27 |
RA180M4/2 | 17 | 2950 | 86 | 0.91 | 33 |
RA180M4/2 | 20 | 2950 | 87.5 | 0.92 | 38 |
| RA225S4/2 | 35 | 2935 | 89.9 | 0.92 | 64 |
| RA225M4/2 | 40 | 2940 | 90.4 | 0.93 | 72 |
| RA250M4/2 | 47 | 2950 | 90.3 | 0.94 | 84 |
| RA160L6/4 | 8.5 | 1455 | 87 | 0.91 | 16 |
| RA180L6/4 | 13 | 1455 | 88.5 | 0.92 | 24 |
| RA132MB6/4 | 5.5 | 1450 | 83 | 0.83 | 12.1 |
| RA100L8/4 | 1 | 1420 | 72 | 0.85 | 2.3 |
| RA132M8/4 | 5.3 | 1420 | 81 | 0.94 | 10.5 |
| RA160MA8/4 | 6 | 1470 | 81 | 0.88 | 13 |
| RA160L8/4 | 9 | 1460 | 84 | 0.88 | 18 |
| RA180L8/4 | 13 | 1475 | 87 | 0.89 | 26 |
| RA225SA8/4 | 22 | 1468 | 87.4 | 0.92 | 41 |
| RA225MB8/4 | 25 | 1463 | 87 | 0.92 | 48 |
| RA250MA8/4 | 34 | 1475 | 90.5 | 0.91 | 63 |
| RA250MB8/4 | 39 | 1478 | 91 | 0.90 | 72 |
| RA280S8/4 | 47 | 1479 | 90.5 | 0.89 | 88 |
| RA280M8/4 | 55 | 1479 | 91.2 | 0.90 | 102 |
You can specify the price, place an order and also buy Eldin multi-speed electric motors of the RA series by calling us by phone: saluteh.