The POWERSTAT Transformer Series consists of manually operated variable transformers designed for both single-phase and three-phase service, with single-unit, 2-gang, and 3-gang assembly options.
The series includes versions for 120 V and 240 V input service and uses POWERKOTE coils in the assemblies covered by the provided material. Depending on the configuration, single-unit designs are rated for constant-current loads from 3.5 to 10 A, with higher allowable current under constant-impedance loading at line voltage. These transformers use an open-frame design without built-in screening, line switches, fuses, terminal enclosures, input cords, or output receptacles, and the removable shaft can be extended from either end of the assembly. The series is intended for wide-frequency operation, supports either clockwise or counterclockwise output-voltage increase depending on connection, and uses either a percentage scale or a volt-graduated dial based on the configuration
