3v 50 Amp 2 Phase Solid State Relay For Dc Load Switching

Product Specification

2 Phase Solid State Relay AC two Phase SSR Solid State Relay
 
 
 
Specification of  2 Phase Solid State Relay
 
 

 

 
  
 
ACSSR of SA D Double-channel
Performance and Application
◆ Non contact switch, zero current turn off ◆ Used for programmable control, various automatic control equipment and computer output control interface etc
◆ Non contactor switch,millions of times swith lifetime ◆ Used for various kinds of double channel control occasions, especially suitable for single- _phase motor positive inversion control
 
 
Performance Parameter

In contrast with electromechanical relays, the subcomponents in an SSRs are entirely electronic:

1. An SSR’s input circuit (like the coil of an electromechanical relay) connects to a system control. As voltage entering the SSR changes — 3 to 32 Vdc is common — it prompts the input circuit to act. In one common variation, the circuit activates upon application of any in-range voltage exceeding the relay’s pickup voltage value … and deactivates upon reduction of input to below the relay’s dropout voltage value.

2. An SSR’s coupling communicates energization and de-energization commands to the relay output — acting as the go-between between the input and output circuits. Note that this portion of an SSR is specially engineered to ensure the input circuit interfaces with the output circuit in a galvanically isolated way … so that high-power (output) load current is segregated by the relay’s coupling section. That reliably prevents load current from flowing to the relay input — even during system failure.

Various technologies are used for the coupling portion of an SSR:

The most common type, photocoupler SSRs, uses an LED or infrared light source on the input circuit to communicate with a photosensitive semiconductor on the output switch side. In contrast, transformer-coupled SSRs use a dc-ac converter to generate output that magnetically couples to the output via a low-power transformer.

3. Next an SSR’s trigger or drive circuit connects one of several designs taking the form of a:

• Silicon-controlled rectifier (SCR) for high-speed switching of (usually) short-duration “on” periods
• Back-to-back thyristor called a triac — short for triode for alternating current
• Metal-oxide semiconductor field-effect transistor (MOSFET) or Darlington transistor (for dc)
• Insulated-gate bipolar transistor (IGBT) for dc

Here, zero-switching operation — the most common for SSRs — as well as peak switching, dc switching, and instant-on switching are all options to tailor the relay action to the type of load the system drives. For example, analog switching uses a synchronizing circuit to make output voltage track input voltage — and allow a wide variety of possible output voltages within the SSR’s allowable range. These excel in soft-start designs to drive electric motors.

4. Beyond that, an SSR’s output (power) circuit connects to the load being controlled. Past the switch it may also include a snubber circuit (in some cases, a reverse-connected diode) or a zero-crossing detector to reduce spikes and transients and electromagnetic interference (EMI) during switching. That’s an issue because SSRs switch load current through attached inductive loads — and (according to Faraday’s law) current interruption induces voltage rise. Any such rise across the SSR exceeding the maximum ratings may cause damage.

Our Company
 
Founded in 1992, Wuxi Gold Control Technology Co., Ltd., a private high tech company, is specialized in the research and production of Solid State Relays, Electronic Semiconductors, DC Motor Drivers and AC Voltage Regulation Devices.
 
For the past 10 consecutive years, our company has been qualified as "Jiangsu's private high tech business". We have also been given the honor as "Wuxi's 10 Best Private Science & Technology Enterprises" for years.
 
Our products, the electronic modules with the brand of Gold, have been listed among "Wuxi's Renowned Products".Our company has 5 patents on Solid State Relays. Our products are widely used in various industrial automation control areas like chemical fiber machinery, temperature control of electric furnace, rubber & plastic machinery, fountain control and digital-controlled machinery, and are sold to Europe, America, Korea and Turkey.
 

 
Our Factory
 
Our factory can produce about 50,000 pieces each month. We can give you good quality and reasonable prices. We have 20 professional research people who have all been graduated from famous universities and colleges. When producing, we have strict tests: self-test, inter-test and special-test.
 
    
 
Our Certificate
 
Our products, the electronic modules with the brand of Gold, have been listed among "Wuxi's Renowned Products".Our company has 5 patents on Solid State Relays. Our products are widely used in various industrial automation control areas like chemical fiber machinery, temperature control of electric furnace, rubber & plastic machinery, fountain control and digital-controlled machinery, and are sold to Europe, America, Korea and Turkey.
 
Our company passed the Certification of ISO9001:2000 in 2000. Our main products have been given CE Certificate of European Union, UL,CUL and RoHS Certificates.