| 700 / | HD | DATA PROCESSING: GENERIC CONTROL SYSTEMS OR SPECIFIC APPLICATIONS |
| 90 | DD | SPECIFIC APPLICATION, APPARATUS OR PROCESS {16} |
| 286 | | .~ Electrical power generation or distribution system {5} |
| 287 | DD | .~.~> Turbine or generator control {2} |
| 291 | DD | .~.~> Energy consumption or demand predication or estimation |
| 292 | DD | .~.~> System protection (e.g., circuit interrupter, circuit limiter, voltage suppressor, etc.) {2} |
| 295 | DD | .~.~> Power allocation management (e.g., load adding/shedding) {1} |
| 297 | DD | .~.~> Power supply regulation operation {1} |