361 / | HD | ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES |
600 | DF | HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS {11} |
601 | DF | .~ For electrical power distribution systems and devices {10} |
602 | .~.~ Distribution station (i.e., substation) {2} | |
603 | DF | .~.~.~> Having transformer |
604 | DF | .~.~.~> Gas insulated |