27-05-2019, 09:59 AM
The cutout you refer to has no current limiting facility; it is purely a voltage regulator. You would be well advised to ensure that you use a cutout/regulator which can keep the dynamo output within its original rating. On most A7s this is 9 amps total (less on early ones and slightly more on very late ones). Assuming 2 amps for the coil anything more than 7 amps on the ammeter should not be allowed to continue for long, or the dynamo will overheat leading to failure. I have just had failure of an electronic regulator which allowed excessive current flow and the solder melted from the commutator connections on the armature. I may well be in for an expensive overhaul.
Robert Leigh
Robert Leigh