Characteristics and Advantages of Solid State Relay

Characteristics of solid-state relay

1. There are no mechanical parts in SSR, and the structure is completely sealed by pouring. Therefore, SSR has the advantages of vibration resistance, corrosion resistance, long service life and high reliability, and its switching life is as high as 10.1 million times.

2. Low noise: AC SSR adopts zero-crossing trigger technology, so the voltage rise rate dv/dt and current rise rate di/dt are effectively reduced on the line, which makes the SSR have little interference to the commercial power when it works for a long time.

3. The switching time is short, about 10ms, which can be used in high frequency occasions.

4. Optoelectronic isolation is adopted between the input circuit and the output circuit, and the isolation voltage is above 2500V V..

5. The input power consumption is very low, and it is compatible with TTL and COMS circuits.

6. The output terminal has a protection circuit.

7. Strong load capacity.

Advantages of solid state relay

1. Long life and high reliability: Solid-state relay has no mechanical parts, and the contact function is completed by solid devices. Because there are no moving parts, it can work in a high-impact and vibration environment. Due to the inherent characteristics of the components that make up the solid-state relay, the solid-state relay has a long life and high reliability.

2. High sensitivity, low control power and good electromagnetic compatibility: The solid-state relay has a wide input voltage range and low driving power, and can be compatible with most logic integrated circuits without adding buffers or drivers.

3. Fast switching: The switching speed of solid state relay can range from milliseconds to microseconds because it uses solid devices.

4. Small electromagnetic interference: The solid-state relay has no input "coil", no ignition arc and no rebound, thus reducing electromagnetic interference. Most AC output solid-state relays are zero-voltage switches, which are turned on at zero voltage and turned off at zero current, thus reducing the sudden interruption of current waveform, thus reducing the switching transient effect.