cross section of a hydroelectric power plant![click to hear](/images/speaker.jpg)
Hydroelectric power plant: plant that produces electricity from energy generated by flowing water.
screen ![click to hear](/images/speaker.jpg)
Assembly of bars placed in front of the water intake to hold back anything that could hinder the operation of the turbine.
reservoir ![click to hear](/images/speaker.jpg)
Basin formed by the construction of a dam; it holds back a very large volume of water so that the flow rate can be controlled.
water intake ![click to hear](/images/speaker.jpg)
Structure that directs water from the headbay to the penstock to power the plant.
penstock ![click to hear](/images/speaker.jpg)
Channel that carries water under pressure to the power plant’s turbines.
busbar ![click to hear](/images/speaker.jpg)
Large aluminum conductor that transmits electric current from the alternator to the transformer.
draft tube ![click to hear](/images/speaker.jpg)
Conduit at the base of the turbine that increases the runner’s output by reducing the pressure of the water as it exits.
generator unit ![click to hear](/images/speaker.jpg)
Device with a turbine that transmits the water’s mechanical energy to the generator’s rotor to make it turn to produce electricity.
tailrace ![click to hear](/images/speaker.jpg)
Channel that discharges water toward the afterbay in order to return it to the watercourse.
afterbay ![click to hear](/images/speaker.jpg)
Area of the watercourse where water is discharged after passing through the turbines.
gate ![click to hear](/images/speaker.jpg)
Movable vertical panel that controls the discharge of water to the tailrace.
gantry crane ![click to hear](/images/speaker.jpg)
Hoisting device in the form of a bridge; it moves along rails.
access gallery ![click to hear](/images/speaker.jpg)
Underground passageway that provides access to various parts of the dam so that it can be inspected and maintained.
machine hall ![click to hear](/images/speaker.jpg)
Area that houses the generator units used to produce electricity.
traveling crane ![click to hear](/images/speaker.jpg)
Hoisting device that travels along aboveground parallel rails; it is used to lift and carry heavy loads.
lightning arrester ![click to hear](/images/speaker.jpg)
Device that protects the electric facilities from power surges caused by lightning.
bushing ![click to hear](/images/speaker.jpg)
Device that allows the conductor to pass through the wall of the transformer and separates it from the latter.
circuit breaker ![click to hear](/images/speaker.jpg)
Mechanism automatically cutting off the power supply in the event of overload.
gantry crane ![click to hear](/images/speaker.jpg)
Hoisting device in the form of a bridge; it moves along rails.
gate ![click to hear](/images/speaker.jpg)
Movable vertical panel that controls the volume of water in the penstock.