UDC 621.313.322 GB 7409-87 Fundamental requirements of excitation systems for large and medium synchronous generator 1987-03-16 1987-11-01 10000kW 6000kW 1 GB755 81 GB7064 86 GB1497 85 GB3797 83 2 2.1 a. b. c. 2.2 a. b. 2.3 a. b. c. 2.4 a. b. 3 3.1 1000m
