Some early Bing electrical locomotives were what was referred to as "High Voltage". The Line voltage Artful Dodger referred to was reduced to about 50 or 60 volts through a carbon filament light bulb (or two for larger locomotives).
if your loco is indeed a HV variety they can be rung by putting two type V or Z transformers in series U1 to outside rail A1 to U2 A2 to center rail and turn them up (it is necessary to phase the transformers so that they do not cancel each other)
Roland
