324 / | HD | ELECTRICITY: MEASURING AND TESTING |
500 | DF | FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS {10} |
512 | DF | .~ For fault location {10} |
513 | .~.~ Where component moves while under test {2} | |
514 | DF | .~.~.~> By exposing component to liquid or gas while under test |
515 | DF | .~.~.~> Using a particular sensing electrode {3} |