Contact Resistance
Contact Resistance
(OP)
Folks, in the absence of any manufacturer info, what is allowable contact resistance value for 230kV Dead Tank Circuit Breaker and the reference standard I can check on? Thanks
GO PLACIDLY, AMIDST THE NOISE AND HASTE-Desiderata






RE: Contact Resistance
Here's where your commissioning records, factory test data and previous maintenance test records are of value.
You can also evaluate on the basis of I^2R at rated current. The heat generated by contact resistance and current has to go somewhere.
old field guy
RE: Contact Resistance
-Continuous current rating of breaker
-Type of breaker – Bulk oil – SF6-
-Manufacturer – Westinghouse, GE, Etc
RE: Contact Resistance
GO PLACIDLY, AMIDST THE NOISE AND HASTE-Desiderata