FT Switches for Dual Protection Scheme

[Kiribanda]

Gentlemen,

Could anybody please upload a correct three line diagram showing how four FT switches (two for each relay) are used with one CT in a dual protective relay scheme (Make A & B) for a simple 50/51 function?

Thanks in advance

Kiri

 

[dpc]

library.abb.com/.../$File/ft%20switch_rev%20d.pdf

This link looks questionable, but Google ABB Test Switches and download their engineering data. There are typical wiring diagrams in the catalog.

 

[Kiribanda]

dpc,

Thanks for your input. I downloaded the contents but it gives only the three line for a single relay and not for a dual relay scheme.

Kiri

 

[dpc]

I think you can figure it out if you think about it. just put the two relays in series.