Need Help Finding a Westinghouse CO relay Curve (1271071-A)
Need Help Finding a Westinghouse CO relay Curve (1271071-A)
(OP)
Hello all,
Anyone have a TCC curve for the Westinghouse CO relay in the picture? The model number we have been given is 1271071-A. It appears to be an 'old' relay. Thanks.
Any information will be helpful if you have even seen this one before.
Anyone have a TCC curve for the Westinghouse CO relay in the picture? The model number we have been given is 1271071-A. It appears to be an 'old' relay. Thanks.
Any information will be helpful if you have even seen this one before.






RE: Need Help Finding a Westinghouse CO relay Curve (1271071-A)
I'd suggest putting it on a test bench and doing a calibration test to see what the curve looks like.
You could try contacting ABB US - they bought this part of Westinghouse. You can still buy brand new CO relays if you're so inclined.
"The more the universe seems comprehensible, the more it also seems pointless." -- Steven Weinberg
RE: Need Help Finding a Westinghouse CO relay Curve (1271071-A)
Try this website:
www.electricalmanuals.net
They have some old equipment manuals on this site, there are no CO type relays listed under Westinghouse, but most of them are listed under ABB.
Good Luck.
Ang
RE: Need Help Finding a Westinghouse CO relay Curve (1271071-A)
RE: Need Help Finding a Westinghouse CO relay Curve (1271071-A)
Thanks. Very useful info. We had 'eye-balled' the CO relay from a previous study report (1963) & guessed that it was a CO-6.
Any chance of sharing that reference sheet?