
How much copper is in the electric motor, depending on the types and dimensions - copper content in the electric motor
The content of copper in the electric motor depending on the power, speed and weight | ||||||||
Power, kWt | 3000 rpm | 1500 rpm | 1000 rpm | 750 rpm | ||||
Electric motor kg. | Copper kg. | Electric motor kg. | Copper kg. | Electric motor kg. | Copper kg. | Electric motor kg. | Copper kg. | |
0.06 kW | 3.3/3 | 0.419/0.485 | ||||||
0.09 kW | 3.3/3 | 0.426/0.440 | 3.3/3 | 0.542/0.534 | ||||
0.12 kW | 3.3/3 | 0.542/0.534 | 4.5/4.3 | 0.50/0.48 | ||||
0.18 kW | 4.5/4.3 | 0.42/0.38 | 4.5/4.3 | 0.55/0.63 | 6.3/6.1 | 0.64/0.62 | ||
0.25 kW | 4.5/4.3 | 0.45/0.44 | 6.3/6.1 | 0.59/0.61 | 6.3/6.1 | 0.83/0.85 | 15.10/14 | 0.950 |
0.37 kW | 6.3/6.1 | 0.58/0.55 | 6.3/6.1 | 0.59/0.61 | 15.1/14 | 0.97 | 17.50/17.1 | 1.160 |
0.55 kW | 6.3/6.1 | 0.60/0.62 | 15.1/14 | 0.92/0.93 | 15.1/14 | 1.08/1.11 | 20/19.5 | 1.33/1.34 |
0.75 kW | 15.1/14 | 0.91/0.93 | 15.1/14 | 0.94/0.97 | 17.5/17.1 | 1.24/1.19 | 25.50 | 1.58/1.62 |
0.9 kW | 25.50 | 1.59/1.53 | ||||||
1.1 kW | 15.1/14 | 0.96/0.92 | 17.5/17.1 | 1.36/1.35 | 20/19.5 | 1.58/1.51 | 25.50 | 1.91/1.90 |
1.2 kW | 25.50 | 1.91/1.87 | ||||||
1.5 kW | 17.5/17.1 | 1.59/1.51 | 20.0/19.5 | 1.49/1.44 | 28.7/25.5 | 1.95/1.92 | 42/40.5 | 2.28/2.25 |
1.7 kW | 28.7/25.5 | 1.88/1.900 | 42/40.5 | 2.56/2.49 | ||||
2.2 kW | 20.0/19.5 | 1.82/1.74 | 28.7/25.5 | 1.92/1.87 | 42/40.5 | 2.280/2.250 | 56/54 | 3.04/3.16 |
2.4 kW | 28.7/25.5 | 1.92/1.93 | ||||||
3 kW | 28.7/25.5 | 2.51/2.6 | 36/36.4 | 2.80/2.95 | 56/54 | 3.050/2.990 | 56/54 | 3.45/3.65 |
3.5 kW | 28.7/25.5 | 2.50/2.42 | ||||||
4 kW | 36/36.4 | 3.76/3.64 | 42/40.5 | 2.81/2.95 | 56/54 | 3.420/3.42 | 77/72 | |
5.5 kW | 42/40.5 | 4.12/4 | 56/54 | 3.49/3.53 | 77/72 | 4.35/4.38 | 93/90 | |
7.5 kW | 56/54 | 4.79/4.71 | 77/72 | 5.44/5.20 | 93/90 | 4.94/5.07 | 135 | 7.30 |
11 kW | 93/90 | 93/90 | 6.09/6.26 | 135 | 7.90/8.10 | 160 | 8.40/8.50 | |
15 kW | 130 | 9.0/9.20 | 135 | 9.9/10.9 | 160 | 9.20/9.30 | 195 | 11.70/11.60 |
18.5 kW | 145 | 9.70/9.6 | 160 | 11.3/11.2 | 195 | 12.10/12.20 | 270 | 13.5/13.10 |
22 kW | 165 | 12.5/12.3 | 175 | 13.2 | 270 | 15.90/15.80 | 310/300 | 14.50 |
30 kW | 185 | 14.8/14.4 | 195 | 14.5/14.4 | 310/300 | 16.8./16.60 | 355 | 19.40/19.3 |
37 kW | 255/250 | 19.7/19.5 | 270 | 17.6/18.1 | 355 | 21.30/21.60 | 490 | 22.70/23.50 |
45 kW | 280/275 | 21/20.7 | 310/300 | 20.5/19.5 | 490 | 26.60 | 535 | 26.8/25.8 |
55 kW | 355/350 | 24.8/24.7 | 355 | 25.8/25.1 | 535 | 27/27.9 | 785 | |
75 kW | 470 | 33 | 490 | 39.6/38 | 785 | 835 | ||
90 kW | 510 | 34.8/35 | 535 | 43.8/40 | 835 | 875 |
Depending on the types and dimensions, there is a certain amount of copper in an electric motor. The table below shows the copper content in electric motors.
There are several methods of dismantling an electric motor. The videos below provide examples of industrial and household methods of dismantling an electric motor. They also demonstrate methods that are not recommended for extracting copper.
The video below shows the fastest method of dismantling an electric motor for copper extraction:
The video below demonstrates a suboptimal method of dismantling an electric motor. However, in certain cases where the wire inside the motor is thick enough, this method can be efficient:
It is possible to disassemble the motor in a "barbaric" way if the wire winding is thick enough:
Those who work with electric motors often wonder how much copper is present in different types of motors. Firstly, it's worth noting that an electric motor consists of a shaft that rotates around the motor's axis. The correct name for it is the rotor, and it is surrounded by a winding made of copper wire, known as the stator. The copper content in an electric motor depends on its construction and specifications, such as power (kW), voltage (V), number of revolutions per minute, and the number of poles.
On our website, you can find information about the copper content in electric motors based on their power, dimensions, and number of revolutions per minute.
The table below provides data on the copper content in three-phase asynchronous motors ranging from 0.06 kW to 90 kW, with voltages of 220/380 V, 380 V, and 380/660 V.
Electric motors play a vital role in various industries, not just in manufacturing but also in other fields of human activity. The primary principle of an electric motor is to convert electrical current into rotational mechanical energy. Electric motors are made from various grades of steel and cast iron, as well as copper windings that enable the rotation of the motor shaft.
Copper content in the motor:
Main components of electric motors, such as cables, winding wire, and collectors, are made from copper. Therefore, it is necessary to know the amount of copper in a motor during its production. The main parameters for determining the exact amount of copper are weight in kilograms and power in kilowatts. The voltage in the electric motor is also important and can be 220 V, 380 V, or 660 V.
Copper winding in the electric motor:
The winding wire is essential for motor repair and rewinding. For this purpose, the metal is deliberately contaminated to reduce starting currents. The winding of the electric motor can be made of rectangular or round sections, and the grade and specific characteristics of the material depend on the wire and insulation. Typically, winding wires are made from copper components coated with fibrous or enamel insulation. Proper selection of these components can simplify repair and operation in the future. Such components are chosen considering heat susceptibility, moisture resistance, chemical resistance, frost resistance, and resistance to damage. Motor rewinding wire is usually sold in coils or spools.
If you need to dispose of an electric motor as scrap metal, you can determine the amount of copper components and the total copper content in the motor using the table provided above in the article.
The price per kilogram of an electric motor or how to correctly dismantle an electric motor for scrap metal:
In conclusion, if you have a broken electric motor, it's worth spending a little time to extract the copper rather than throwing it away.