:?: We have two transformer designs that are supposed to be the same. They each have the same number of turns in the secondary, the same number of turns in the primary, the same laminations (same size, stack height, and alignment), and the same size wire. The only difference in design is that one is hand wound and one is auto wound.
The auto wound coils utilize a slightly larger winding block (because they will be wound tighter).
The problem that we're having is that the excitation current in the auto wound transformers is higher than it should be (it was expected to be lower and more consistent).
Does anyone know what would cause the excitation current to be high?
The auto wound coils utilize a slightly larger winding block (because they will be wound tighter).
The problem that we're having is that the excitation current in the auto wound transformers is higher than it should be (it was expected to be lower and more consistent).
Does anyone know what would cause the excitation current to be high?