DT

High-voltage electrical substations comprised of transformers, circuit breakers, circuit switchers, voltage regulators, fuses, capacitors, relays, rectifiers, electric power converters, switchyards and steel support frameworks for the foregoing; Energy and communications facilities and infrastructure, namely, high voltage electrical substations and switchyards for distributing power, and components for electrical substations and switchyards, namely, transformers, circuit breakers, circuit switchers, voltage regulators, fuses, capacitors, relays, rectifiers, electric power converters, and steel support frameworks specially adapted for electrical power distribution equipment; power-line transmission machines and apparatus in the nature of electric transmission towers