A braking resistor is part of an electromechanical system designed to dissipate excess energy in the form of heat when braking electric motors and other devices. Its main task is to quickly stop or slow down the mechanism by creating a braking torque.
During rheostat braking, the electrical energy of an engine operating in generator mode is transferred to a braking resistor, where it is converted into thermal energy and dissipated in the form of heat.
As an electrical load, resistors are used in electric rolling stock, electric elevator drives, some vehicles with hybrid engines, and on various industrial equipment. For the long-term and safe operation of such systems, it is extremely important to choose durable and wear-resistant materials.
FeCral is an alloy that combines high electrical resistance, heat resistance, increased hardness and corrosion resistance, which makes it an ideal solution for the manufacture of braking resistors.
Braking resistor design: main components and their role
The main structural elements of the braking resistor include:
- The building. It protects the internal elements of the device from external influences and overheating. It is made of non-combustible, heat-resistant materials, such as ceramics or heat-resistant steel, which guarantees the safe operation of the equipment.
- Resistive element. The main component of the braking resistor. Its task is to convert electrical energy into thermal energy by creating resistance. Therefore, their manufacture requires materials with high resistivity, which make it possible to effectively dissipate heat.
- Thermistors. They protect against overheating, increasing the service life of the brake resistors. The temperature is automatically controlled and, if the allowable value is exceeded, the system is turned off, preventing overheating and device failure.
- Terminals. They are needed to connect a resistor to an electrical circuit. They must ensure stable contact, eliminating possible power outages.
Applications of braking resistors
The presented devices are widely used in various industrial equipment and traction systems where it is necessary to convert and dissipate energy. They also protect equipment from overheating.
The main applications of braking resistors are:
- Industrial systems. In industry, resistors are used in various machines and mechanisms to stop electric motors and prevent them from overheating.
- Vehicles. In electric cars and hybrid cars, braking resistors are used to recover energy during braking and convert it into heat.
- Traffic control systems. In elevators, escalators and other similar devices, braking resistors ensure smooth and safe braking and reduce the risk of overloads.
- Traction systems. In electric trains, trams and similar systems, resistors help to effectively control speed and control braking, ensuring the safety and stability of vehicles.
The design of the braking resistor ensures the safe and reliable operation of various electrical systems and mechanisms. And the range of applications covers various industries, transport and other areas of activity.
Why is fechral the best choice for braking resistors?
FeCral is a high-temperature alloy consisting of gland, chromium and aluminum. It has high resistivity and increased heat resistance, which makes it an ideal material for the manufacture of devices operating at high temperatures.
The advantages of fechral for the production of braking resistors:
- High heat resistance. FeCral can withstand extreme temperatures without losing its physical and mechanical properties. This is especially important for resistors, since when electrical energy is converted into thermal energy, they are intensively heated.
- Resistivity. The material has a high resistivity, which makes it possible to create resistors with the necessary electrical characteristics that are effective for dissipating heat in different operating modes.
- Stable characteristics. The alloy retains its physical and mechanical properties even during prolonged use, which ensures stable operation of brake resistors under different operating conditions.
- Strength. Fechral is resistant to mechanical damage. This allows it to be used in devices that are exposed to intense loads and vibrations.
- Durability. The material maintains its characteristics for a long time, which significantly increases the life of the resistors and reduces maintenance costs.
- Versatility. The alloy is ideal for the manufacture of brake resistors of various types and sizes, which expands its scope of application in various industries and technological processes.
- Cost-effectiveness. Compared to other heat-resistant materials, fechral has a relatively low cost, since its structure is based on iron, and not more expensive nickel, titanium or copper. This makes it possible to reduce production costs without sacrificing quality.
PZPS products: high-quality materials for braking resistors
The St. Petersburg Precision Alloy Plant produces high-quality fechral tape X15YU5 et X23U5 up to 4 mm thick and 3 to 250 mm wide, which are suitable for the production of various industrial equipment, vehicles and traction systems. You can also buy cold-rolled strip made of nichrome and other precision materials from us:
- alloy grades X23YU5T, X20N80N et X15N60N, which have high electrical resistance;
- soft magnetic alloys 27KH, 49K2FA-VI, 50N, 50NP, 79NM, 80NM, 81NMA;
- alloys 40KHNM, 36NHTYU, 17HNGTused for the production of various elastic elements;
- alloys with a given TCLR (temperature coefficient of linear expansion) 29NK, 36N, 42N.
Our company's product range includes a variety of steel and alloy grades, which allows you to choose the optimal material for the specific requirements of each project. We are every year we introduce new technologies production and we use only proven raw materials that have undergone strict input overseeing, which guarantees the durability and reliability of our products. Please contact us at +7 (812) 740-76-57 or make an application on the site. We will take into account all the features of your project and select the most effective solution for your production.