short circuit creation with on transformer

[huntermanana12]

hello, i need help with this circuit. i am nt sure where the problem exactly is. i am trying to create a circuit that detects an increase in current that is in case of a short circuit on the secondary of the transformer. the CCCS is acting as my current transformer, the current controlled spst switch is acting as my relay. by shorting the terminals at the secondary of the transformer, the current increases which turns on the switch and then consequently the LED. i have tried changing the parameters and am not sure where the problem is exactly. 

[Andr3s_Br3n3s]

Hi!

Thank for attaching the file and the image.

I would like to know if you are considering mounting this circuit in the real life or is only a simulation?

Why the short circuit of the resistance? those 3 resistors are doing nothing there. 

I think you are forcing the current with the current controlled current source.

Did you think to configure a current sensing circuit? with a Omp Amp.

[huntermanana12]

yes, am considering mounting it in real time. that circuit is part of another circuit am trying to build. a power outage detection circuit. so the resistors are acting as real time loads connected onto the transformer. am shorting the resistance coz this is a model for an actual power outage detection system in case of a short circuit on the transformer in real time. 

[Andr3s_Br3n3s]

I think that one good approach it would be to use an Omp amp for the current sensing circuit, use a signal condition circuit and the use the current sensing circuit.

here are some links about current sensing: http://cds.linear.com/docs/en/application-note/an105fa.pdf

https://www.eetimes.com/document.asp?doc_id=1279404

Let me check the file you attached.

[huntermanana12]

I checked out the pdf that u sent via the link. now ma wondering if its possible for any IC to sense short currents. 

[leob2]

Yes, that the reason I was thinking to use an Op Amp. there are some good configurations in the pdf, I quick search on the web could help. 

[huntermanana12]

The 6100 and 6101 ICS, are they DC triggered ICS?  OR they are both AC and DC

[Andr3s_Br3n3s]

They are DC, 

For AC they mention on page 37 another ICS, LT1966  http://cds.linear.com/docs/en/application-note/an105fa.pdf#page=37

on Page 50, http://cds.linear.com/docs/en/application-note/an105fa.pdf#page=50 you can find the high voltage measurement for DC, the monitor current flow up to 500V.  Remember that those are high voltages be careful!