BED FOR LOADING SYNC MACHINES AT TESTING Russian patent published in 1995 - IPC

FIELD: electric engineering. SUBSTANCE: magnet axes of rotors of the sync machines coincide, and three-phase stator windings of the machines are oriented at the same direction. Bed has units for fixing machines to stator rotation unit of one machine, shaft for connecting rotors of the machines, terminals for connecting excitation windings, units for regulating voltage, control unit, machines frequency of rotation meter, units for measuring phase currents, voltages, powers, reactive current detectors of machines under test, active current detectors, contactor for switching machines on mutual load, driving engine, coupling for connecting driving engine with shaft to connect rotors of tested machines, contactor, frequency converter, contactor for connecting inductive load (contactor is made on base of inverter which is led by network). Contactor has smoothing reactor. There is controlled rectifier with current-limiting three-phase reactor in the device, as well as contactor for connecting inductive load to feeding network. EFFECT: improved reliability; reduced exploitation charges; improved speed of operation; improved electrical characteristics of the bed. 4 dwg