Analysis of the advantages of relays
创建于04.17
With the development of electricity meters, relays have also developed rapidly and have become an indispensable important component in electricity meters. They feature small size, strong load capacity, high isolation between input and output, low power consumption, and low temperature rise. They have a high market share and are widely used, favored by consumers. Relays were originally mainly used in IC card prepaid electricity meters and centralized meter reading systems. In recent years, relays have been widely used in the composite switches of reactive power compensation devices. When used in conjunction with thyristors in composite switches, they have become the main switching devices in reactive power compensation devices, used to switch high-current circuits. They can also be applied in various household appliances and automatic control devices (such as lighting control systems).
Analysis of the advantages of relays
- It features high reliability. Due to the strict selection of military-grade components, the reliability of the relay has been significantly enhanced. All electrical connection points are connected with fasteners. The relay's working power supply adopts an independent power supply mode. All output signals of the relay are isolated and transformed without interfering with each other. The cables used for connection with various instruments and meters are double-shielded cables. As long as one end is reliably grounded, the interference introduced by the line can be effectively suppressed.
- Relays can protect motors under various starting conditions and have high operational reliability, such as motor overload and phase loss protection, as well as grounding protection. They can be centrally controlled by a computer, enhancing the degree of automation in the power distribution system and bringing the dispatching and maintenance of the power distribution and control systems to a new level.
- The relays produced are based on the total current law and adopt the two-stage automatic temperature compensation technology and the most optimized circuit structure design technology. In the magnetic circuit, the latest materials and process technologies are selected in accordance with the principles of center and axis symmetry, ensuring the theoretical calculation accuracy requirements of the product in practical applications. A three-stage differential amplifier circuit is adopted to eliminate the error caused by the output resistance of the Hall element being greater than the input internal resistance of the operational amplifier, ensuring that the sampling values are reflected without distortion and meeting the design requirements.
- The relays produced are based on the principle of symmetry. The air gaps within the closed magnetic circuit are evenly distributed in even multiples. The technical parameters of the Hall element are strictly matched. A unique residual magnetism removal circuit is adopted to enhance the product's resistance to external magnetic interference. A two-stage automatic temperature compensation technology is used to ensure that the product does not change in offset due to the influence of external environmental temperature. The adoption of fully enclosed anti-corrosion and dust-proof measures but not sealing the Hall element in the air gap is to prevent the situation where a single Hall element is damaged and cannot be replaced. Even if a false value is artificially adjusted in the circuit, the symmetry principle will be completely lost, thus failing to guarantee the impact of the eccentricity error.
Under the background of industrial structure adjustment, reducing energy consumption in the gross domestic product and achieving low-carbon economic development, the new generation of energy-saving, material-saving and high-performance relay products will enjoy greater development. The market demand is increasingly vigorous, which also provides a rare opportunity for the transformation and upgrading of the low-voltage electrical industry.
Taking advantage of the rapid development of new energy in the market, the relay industry has accurately analyzed the situation and intensified its own entrepreneurial transformation and upgrading, providing a good opportunity for the extension and development of the industry. It has expanded its products into fields such as photovoltaic power generation inverters, new energy control and protection systems, distributed energy, energy storage equipment, and DC switchgear equipment.
Relays will be the research and development direction of relays. Communication relays have become the largest application market, and the third-generation relays have been widely used. Solid-state relays apply microelectronics technology. The products are developing in the direction of intelligence and modularization, and the market demand is steadily rising. As the second-largest market for relay applications, the automotive industry is experiencing a continuous increase in per-vehicle usage and a rapid expansion of product varieties.
Phone
Mail