Telecom relay is the general name of control relay applied in communication system. After years of development, the design and manufacture of communication relay has been close to the fourth generation from the first, second and third generation. The rapid development of information industry puts forward higher and higher technical requirements for communication relay, such as miniaturization, low power consumption The requirement of high reliability has become the inevitable trend of communication relay in the future.

Development trend of Telecom Relay

Miniaturization
With the rapid development of communication equipment, the space of mounting plate is shrinking. On the premise of not damaging the performance, miniaturization has become an inevitable trend for each manufacturer. The size of communication relay has changed from 20.0 from the first generation to the fourth generation × ten × 10.0mm to 10.0 × six point five × 5.0mm, the volume is reduced by more than 6 times.

Low Power Consumption
From the second generation to the fourth generation, the power consumption of communication relay is reduced from 200MW to 100MW, which is reduced by 50%; It also has energy-saving and memory functions, which effectively reduces the input of power supply of the whole machine.

Reliability
The international standard iec61811-55 for the fourth generation communication relay puts forward more stringent requirements for surge withstand voltage, insulation withstand voltage, insulation spacing for surge protection and isolation between input and output. Good relay parameter consistency and high reliability make the whole machine run correctly.

Magnetic system efficiency
Permanent magnet materials will develop rapidly, and the properties of magnetic materials will be improved by adding components. Hard and soft magnetism will be combined to produce materials with high persistence and high coercivity. In order to reduce the volume of some high-end communication relays, permanent magnets are no longer used, flat coil system appears, and some adopt electrostatic driving mode.

Product mix
The structure of the third and fourth generation communication relays is quite different from that of the first and second generations. The double coil symmetrical balanced rocker magnetic circuit structure with high-energy permanent magnet is adopted. The contact is spot welded on the strip and then injected into the whole. The requirements for precision, sensitivity and material are higher.