307 / | HD | ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS |
43 | DF | PLURAL SUPPLY CIRCUITS OR SOURCES {14} |
52 | DF | .~ Load current control {4} |
53 | DF | .~.~ Load current division {3} |
55 | .~.~.~ Fixed or predetermined ratio {3} | |
56 | DF | .~.~.~.~> Diverse-or unlike-type sources |
57 | DF | .~.~.~.~> Plural generators |
58 | DF | .~.~.~.~> Plural converters |