Breaker closing time - Westinghouse 50-DHP-250?

[dpc]

I am trying to come up with an estimate of breaker closing time for the subject metal-clad switchgear breaker (5kV)in order to set up an auto synchronizer.

If anyone has access to an old installation manual or spec sheet for these breakers, and can find this data, I'd be very appreciative.

I'm guessing about 80 milliseconds, but it's really a guess.

 

[jbartos]

Suggestion: The breaker closing time varies according to the breaker design. The vacuum breakers close very fast.
Visit

http://www.beckwithelectric.com/infoctr/appnotes/App4.pdf

http://www.programma.se/matcb.html

http://doc.newage-avkseg.com/doku.pdf/function/psy2/psy2_e.pdf

(for 40ms closing time)
etc. for more info

 

[dpc]

Thanks, jbartos. This is why I provided the manufacturer and model number in the original subject line. This is an air breaker, not vacuum. Vacuum breakers are in the range of 45 to 60 milliseconds closing time. I suspect these old air breakers will be longer.