| 310 / | HD | ELECTRICAL GENERATOR OR MOTOR STRUCTURE |
| 10 | DF | DYNAMOELECTRIC {5} |
| 40 R | DF | .~ Rotary {28} |
| 52 | DF | .~.~ Cooling or fluid contact {6} |
| 58 | DF | .~.~.~ Circulation {3} |
| 60 R | ![]() | .~.~.~.~ Self-forced {4} |
| 61 | DF | .~.~.~.~.~> Rotor passage |
| 62 | DF | .~.~.~.~.~> Suction pump or fan |
| 63 | DF | .~.~.~.~.~> Pressure pump or fan |
| 60 A | DF | .~.~.~.~.~> Hollow passages |