Transfer trip for breaker failure

[Bugman1400]

Correct, thats my point, demand. They would not make 12 and 24 volt relays if consumer were not looking for them. But in my case 24 volts is used in that its less likely to hold an arc at 125 volts. In a properly maintained system corrosion should not be an issue.

I don't think 24VDC was used because it is less likely to hold an arc than 125VDC. While your statement is true, I don't think it was a consideration during design. However, since I don't know anything about your application, I really shouldn't say too much. If these relays are not at a substation, are they applied at an industrial plant of some sort? What year did this application begin?

 

[mbrooke]

I don't think 24VDC was used because it is less likely to hold an arc than 125VDC. While your statement is true, I don't think it was a consideration during design. However, since I don't know anything about your application, I really shouldn't say too much. If these relays are not at a substation, are they applied at an industrial plant of some sort? What year did this application begin?

There isnt a single utility application with 24volt DC relays? :blink:

 

[Bugman1400]

There isnt a single utility application with 24volt DC relays? :blink:

None that I've seen. Would love to see dwgs that show this application at a utility. Perhaps you could find some remote co-op in the backwoods of Louisiana that may use it.