Teaman

Lizette, Came across what I believe is your dilemma re the starter motor. Is all sorted ?

Thank you Eeyore 😃 Greatly appreciated !

Did your AC203's on the busses come attached to the L680 11.1 lt diesel ? Don't suppose you "borrowed" the schematic ?

Hello Sir Nibble, In some of the BR documents, there is a method listed to re-energise using a 200 ohm 6W resistor across the B+ & F+A terminals, for a few seconds, engine running. The reason(s) for the loss is my interest. I saw the postings come up in my searches, and wondered what information was available, particularly pictures, connection diagrams and manuals. Should knowledge of the H, M & L terminals be scant, they are the charging sense for particular battery types. That means for the type of battery, the required charging voltage should be equated to the appropriate terminal. Lead acid 24V is usually on the H (29.0 - 29.5 Vdc). Battery manufacturers/suppliers should have the information per battery make & type, which can vary a bit.

Yes, from the point of view it can "vanish", I agree. However, the AC203 is a self-excitation alternator, ie not designed to lose its rotor magnetism. What I've found so far on remanence loss points to electrical issues, such as reverse current. Hence the want for schematics, manuals etc.

Hello All, A bit late in the day, given your post dates, but I'm looking for information on the A460 24 regulator, particularly circuit schematics if there are any. Pictures of the components would be great too. I can offer what I have on the CAV AC203 60/A460 arrangement used on BR DMUs Class 108. I want to determine if by fault or design, residual rotor magnetism, remanance, can be destroyed. Your help would be greatly appreciated.