I have a small layout that I have created 5 power districts. Four are controlled by individual MRC 1527 Circuit Breakers, and one that uses the MRC auto-reverser AD520. My problem is that when I test any power districts by shorting a section of rail, all districts shut down rather than just the one being tested. I have used isolation connectors and confirmed that the rails are not connected. If I short the AR district, the MRC Advanced2 base controller will trip.
Any help would be greatly appreciated.
Pardon me for asking, Randy, but are you REAL sure that they are connected per the sheet that came with them? MRC does not supply any connection info on their website. Are the yellow and red used for rail and bus, or are they yellow/ red pairs?
No reason that should not work, individual protection, that's their purpose.
Cid (Memphis, Tennessee)
Here's the manual for the 1527:https://www.modelrectifier.com/v/vspfiles/resources/dcc/0001527%20DCC%20DISTRICT%20CIRCUIT%20BREAKER.pdf
and the AD520:https://www.modelrectifier.com/v/vspfiles/resources/dcc/AD520-reverse%20loop%20controller.pdf
What size wire are you using for the bus? Should be 12 or 14 guage. And for the feeders I use 22 guage.
SOLVED
I did not wait long enough. The other non-shorted districts will restart in a few seconds while the shorted district will not.
Good Deal!
And thanks for the feedback, Randy!
Well, that's not exactly how it's supposed to work, at least, not other breakers. The idea is that the other sections NEVER shut down, only the section with a short. So either MRC is just odd, or something still is not right. If they are adjustable for trip current, I would say they are set higher than the output of your system.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.