POWER SUPPLY DEVICE FOR AC TRACTION CIRCUIT Russian patent published in 1996 - IPC

FIELD: railway transport; electrification of railways for combined supply of traction and nontraction consumers. SUBSTANCE: device has 2 x 25 kV power supply system with three-winding traction single-phase transformers 6,7 and 8, two connectors and switch on secondary side of transformer 8 to form voltage triangle to supply three-phase consumer supply lines of substations. Other secondary windings of traction transformers 6 and 7 in both arms of substation or reverse transformer are shunted through their double-pole disconnecting switches by capacitor banks and are connected into triangle through single-pole disconnecting switch. EFFECT: enhanced reliability of operation. 2 cl, 1 dwg