Substation EquipmentTransformersCircuit BreakersDisconnecting SwitchesSubstation BusSurge ArrestersInsulators and ConductorsProtective RelaysFusesSubstation LocationAll power transmission lines must be isolated to avoid safety hazards. Large strings of insulators are used at substations and at other points along the power distribution system to isolate the current carrying conductors from their steel supports or any other ground mounted equipment. Insulators may be made of porcelain, rubber or a thermoplasticSee more on electrical-engineering-portal Occupational Safety and Health Administration
eTool : Electric Power Generation, Transmission,
A step-up transmission substation receives electric power from a nearby generating facility and uses a large power transformer to increase the