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FT Switches for Dual Protection Scheme

FT Switches for Dual Protection Scheme

FT Switches for Dual Protection Scheme

(OP)
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

RE: FT Switches for Dual Protection Scheme

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.  

RE: FT Switches for Dual Protection Scheme

(OP)
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

RE: FT Switches for Dual Protection Scheme

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

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