ANALYSIS OF APPLICABILITY OF EXTERNAL NETWORK EQUIVALENTS FOR DEFINITION OF SHORT CIRCUIT CURRENTS IN 2×25 KV AUTOTRANSFORMER TRACTION POWER SUPPLY SYSTEMS Language English Read more about ANALYSIS OF APPLICABILITY OF EXTERNAL NETWORK EQUIVALENTS FOR DEFINITION OF SHORT CIRCUIT CURRENTS IN 2×25 KV AUTOTRANSFORMER TRACTION POWER SUPPLY SYSTEMSРусский