How to test SSR (Solid State Relay) ? thanks

[dineshdeshmuk]

How to test SSR (Solid State Relay) ?

Both AC SSR (AC based) & DC SSR (Dc based) ............

thanks

 

[enjunear]

Apply power to the coil (using a benchtop power supply or signal generator) and measure the resistance across the contacts (should go from open to close, or vice versa).

 

[kak111]

How to test SSR (Solid State Relay) ?
Both AC SSR (AC based) & DC SSR (Dc based) ............

Test circuits.............................

 

[dineshdeshmuk]

Test circuits.............................

thanks a lot ..... i give you the points ....... for your beautiful answers

What do you mean by " load " ? though, you have taken Lamp (L) which is also a load ...... so, can you explain me that thing .......

And, also if you could tell me the applications of these 4 different SSRs ....... And, how can i figure it out that out of 4 types which type is that one ??

thanks a lot

 

[kak111]

What do you mean by " load " ? though, you have taken Lamp (L) which is also a load ......

in means control side of SSR module
load means load side or output side of SSR

tell me the applications of these 4 different SSRs ....... And, how can i figure it out that out of 4 types which type is that one

The most important have been told in these ...............

SSR >> Solid State Relay
SSC >> Solid State Contactor

**broken link removed**

**broken link removed**

http://www.teledynerelays.com/pdf/ISSR Selection Guide.pdf

Solid State Relays General Information
http://www.gavazzionline.com/pdf/ssr.pdf

 

[dineshdeshmuk]

in means control side of SSR module
load means load side or output side of SSR



The most important have been told in these ...............

SSR >> Solid State Relay
SSC >> Solid State Contactor

**broken link removed**

**broken link removed**

http://www.teledynerelays.com/pdf/ISSR Selection Guide.pdf

Solid State Relays General Information
http://www.gavazzionline.com/pdf/ssr.pdf

Do i have to connect any type of load in series with -ve of DC supply or for AC connect that load in series with it ???? or just leave it as only wires ???

 

[Doug Sherman]

Heya,

It's a very common question because an SSR cannot be tested in the same manner as a traditional electromechanical relay. First, you cannot simply connect a multimeter to the output of an SSR and measure the resistance when the input signal is applied. It won't work. The reason is that an SSR has no moving parts and relies on the line voltage to trigger the SCRs in the output. A multimeter will not provide enough voltage to do that.

If you're up for a bit f light reading, here is an article on how to best test a solid state relay (shameless plug... I wrote the article...)
**broken link removed**

More information is available here.
**broken link removed**

You definitely need a load or else you will short the AC mains and destroy the SSR... probably trip a few circuit breakers in the process, as well. However, you should not need to connect anything in series with the input. That's one of the advantages of an SSR over discrete components; the input circuit and isolation are already built-in.

Hope this helps!!