What are the advantages of latching relays from the perspective of development?
In the rapid development of the industry now, with the development of new energy meters, latching relays also ushered in rapid development, relays have become an indispensable part of the energy meter, with strong load capacity, small size, high isolation between input and output, low power consumption, low temperature rise characteristics, high market share, and widely used. Being highly favored by producers will inevitably bring industry prosperity.
Magnetic latching relays were originally mainly used in IC card prepaid meters and centralized meter reading systems. In recent years, latching relays have been widely used in the composite switch of reactive power compensation devices, which is used in combination with thyristor in the composite switch to become the main switching device in the reactive power compensation device to switch the use of high-current circuits, and can also be used in various household appliances and automatic control devices (such as smart home control systems, industrial control systems, etc.).
The following analysis analyzes the advantages of latching relays:
1, high reliability, latching relays due to the strict selection of military-grade components, so that the reliability of the product has been greatly improved, the contact of all electrical connections using solid parts connection, latching relays working power supply using independent power supply, latching relays of various output signals are isolated transformation, do not interfere with each other, The cables connected with various instruments and meters are double-shielded cables, and as long as one end is reliably grounded, the interference introduced by the line can be effectively suppressed.
2, the latching relays can protect a variety of starting conditions of the motor, with high action reliability, such as motor overload and phase off protection, grounding protection, can achieve central computer centralized control, improve the degree of automation of the distribution system, so that the distribution, control system scheduling and maintenance to a new level.
3, latching relay is in the full current law based on the use of secondary temperature automatic compensation technology and optimal circuit structure design technology, magnetic circuit according to the center and axis symmetry principle, the selection of the latest materials and technology, to ensure the product in the practical application of the theoretical calculation accuracy requirements. The three-stage differential amplifier circuit is used to eliminate the error caused by the output resistance of the Hall element being greater than the internal resistance of the input of the op amp, so that the sampling value can be reflected without losing the truth and meet the design requirements.
4, the latching relay is in accordance with the principle of symmetry, the closed magnetic circuit of the channel air gap evenly distributed with an even number of times, the Hall of the technical parameters are strictly matched, the use of a unique remanence circuit, improve the product anti-external magnetic interference ability, the use of secondary temperature automatic compensation technology, so that the product is not affected by the external environment temperature and offset changes. The use of fully closed anti-corrosion and dust protection measures but not sealed the dead air gap in the hall, in order to avoid the failure to replace a hall part in case of damage, even if the circuit does not strongly adjust a false value but completely lose the symmetry principle, so that the impact of the core deviation error cannot be guaranteed.
The latching relays industry with the rapid development of new energy in the market, size up the situation, increase the transformation and upgrading of their own business, provide a good opportunity for the extension and development of the industry, so that their products to photovoltaic power inverter, new energy control and protection system, distributed energy, energy storage equipment, DC switching equipment and other fields to expand.
In the context of industrial restructuring, reducing the energy consumption of GDP, and realizing the development of low-carbon economy, a new generation of energy saving, material saving, high-performance, magnetic retention relay products will be greater development, the market demand is becoming increasingly strong, and it also provides a rare opportunity for the transformation and upgrading of the low-voltage electrical appliance industry.
Magnetic latching relays will be the direction of relay research and development, communication relay relays have become the largest application market, and the third generation latching relays have been widely used; Solid state latching relays use microelectronics technology, products to intelligent, modular direction, the market demand is rising steadily; Automobile as the second largest market for latching relay applications, the amount of bicycles is increasing, and the variety is expanding quickly.
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