361 / | HD | ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES |
1 | DF | SAFETY AND PROTECTION OF SYSTEMS AND DEVICES {32} |
62 | DF | .~ Feeder protection in distribution networks {2} |
65 | DF | .~.~ With current and voltage responsive fault sensors {1} |
66 | .~.~.~ With communication between feeder disconnect points |