Our Samatic (U.S Make) winding analyser Tester allows you to safely test these coils using higher currents. When testing these coils a specific voltage is applied on adjacent commutator bars reducing the need for excessively high voltage and the danger of damage to the coil. Inter-bar voltages can be varied from 50 to 900 volts on large, cross-connected equalized armatures.
This bar-to-bar testing is the preferred method of testing DC armatures used by manufacturers and re-builders.