Synchronizing Gear with Tie CB

[AAEB]

Good day!

I just want to ask if someone here had an experience with Synch.Gear with Tie CB?

here's a sample diagram
http://s981.photobucket.com/albums/ae300/mah_pogi2x/?action=view&current=one-linediagram.jpg

My question here is about interlocks, do i need to put interlocks between gensets MCB's at TIE CB?


thanks,
AAEB

 

[AAEB]

to be more specific, we have a current project, an existing compound with 2 garment plants, 1 plant have 1000Kw genset and the other with 2-500Kw. The idea here is to have a back up emergency power incase one genset fails. a normally open tie will be engaged in order to connect the other plant load to the other. my question is do i need to put a interlocks?

thanks in advance,
AAEB

 

[AAEB]

http://s981.photobucket.com/albums/ae300/mah_pogi2x/?action=view&current=one-linediagram2.jpg

 

[jim dungar]

Yes, you should have some type of interlocking.

Your choice of words is creating some confusion.

Synchronizing gear is used to allow sources to be adjusted such that they can be brought into synchronization prior to being connected together. For the vast majority of customers, the synchronization is done 'inside' of their generator control package. Small stand by generators may not have any synchronizing capability, and large multi-generator installations may have separate synchronizing gear.

Paralleling gear is used to allow multiple sources to be connected without any synchronizing taking place.

Both paralleling and synchronizing may be done manually or automatically. Automatic systems will usually include sufficient tie breaker interlocking and protective relaying to prevent 'out of sync' sources from being paralleled. Manual systems frequently done without interlocking of any kind (or if some was designed in it has been bypassed). The thought process behind no interlocking may be left over from the days when manual systems were only operated by 'professionals'.