340 / | HD | COMMUNICATIONS: ELECTRICAL |
|
500 | DF | CONDITION RESPONSIVE INDICATING SYSTEM {6} |
540 | DF | .~ Specific condition {18} |
635 |  | .~.~ Condition of electrical apparatus {15} |
636 | DF | .~.~.~> Battery |
637 | DF | .~.~.~> Watt-hour meter |
638 | DF | .~.~.~> Fuse or circuit breaker {1} |
640 | DF | .~.~.~> Heater element |
641 | DF | .~.~.~> Signalling light element {2} |
644 | DF | .~.~.~> Switch or relay |
645 | DF | .~.~.~> Rectifier |
646 | DF | .~.~.~> Transformer |
647 | DF | .~.~.~> Insulation |
648 | DF | .~.~.~> Motor |
649 | DF | .~.~.~> Condition of intentional grounding circuit |
650 | DF | .~.~.~> Undesired circuit ground or short {1} |
652 | DF | .~.~.~> Breaking of circuit continuity |
653 | DF | .~.~.~> Electronic circuit or component |
654 | DF | .~.~.~> Circuit energization {2} |