| 310 / | HD | ELECTRICAL GENERATOR OR MOTOR STRUCTURE |
| 10 | DF | DYNAMOELECTRIC {5} |
| 40 R | DF | .~ Rotary {28} |
| 66 | DF | .~.~ With other elements {7} |
| 85 | ![]() | .~.~.~ Mechanical shields or protectors {4} |
| 86 | DF | .~.~.~.~> Shield in air gap |
| 87 | DF | .~.~.~.~> Submersible |
| 88 | DF | .~.~.~.~> Dirt, moisture or explosion proof |
| 89 | DF | .~.~.~.~> Housings, windows or covers |