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generator unit ![click to hear : generator unit click to hear : generator unit](../../../images/speaker-vert.gif)
Device with a turbine that transmits the water’s mechanical energy to the generator’s rotor to make it turn to produce electricity.
bottom ring ![click to hear : bottom ring click to hear : bottom ring](../../../images/speaker-vert.gif)
Circular part under the wicket gates that holds them in place.
generator ![click to hear : generator click to hear : generator](../../../images/speaker-vert.gif)
Machine that consists of a rotor and a stator; it produces an electric current.
runner blade ![click to hear : runner blade click to hear : runner blade](../../../images/speaker-vert.gif)
Stationary curved plate on the turbine’s runner; it receives the thrust of the water to turn the runner.
runner ![click to hear : runner click to hear : runner](../../../images/speaker-vert.gif)
Movable part of the turbine that transmits the movement of the water to the shaft to which it is attached to turn the rotor.
draft tube ![click to hear : draft tube click to hear : draft tube](../../../images/speaker-vert.gif)
Conduit at the base of the turbine that increases the runner’s output by reducing the pressure of the water as it exits.
draft tube liner ![click to hear : draft tube liner click to hear : draft tube liner](../../../images/speaker-vert.gif)
Covering that is usually made of steel; it protects the draft tube from erosion.
spiral case ![click to hear : spiral case click to hear : spiral case](../../../images/speaker-vert.gif)
Duct shaped like a spiral staircase that is used to distribute water uniformly around the turbine to make it turn smoothly.
turbine headcover ![click to hear : turbine headcover click to hear : turbine headcover](../../../images/speaker-vert.gif)
Structure that covers the upper part of the turbine’s runner.
stator ![click to hear : stator click to hear : stator](../../../images/speaker-vert.gif)
Stationary part of the generator that consists of a coil of copper conductors, which collects the electric current produced by the rotor.
gate operating ring ![click to hear : gate operating ring click to hear : gate operating ring](../../../images/speaker-vert.gif)
Movable device that controls the opening and closing of the wicket gates.
thrust bearing ![click to hear : thrust bearing click to hear : thrust bearing](../../../images/speaker-vert.gif)
Unit that bears the thrust of the turbine and the weight of the rotating parts of the generator unit.
exciter ![click to hear : exciter click to hear : exciter](../../../images/speaker-vert.gif)
Device that supplies electric current to the rotor’s electromagnets.
rotor ![click to hear : rotor click to hear : rotor](../../../images/speaker-vert.gif)
Movable part of the generator that is made up of electromagnets; its rotation induces an electric current in the stator.
stay vane blade ![click to hear : stay vane blade click to hear : stay vane blade](../../../images/speaker-vert.gif)
Fixed panel that receives pressurized water from the spiral case and directs it over the wicket gates.
wicket gate ![click to hear : wicket gate click to hear : wicket gate](../../../images/speaker-vert.gif)
Movable panel that regulates the flow of water entering the turbine to ensure a constant rotational speed of the runner.
stay ring ![click to hear : stay ring click to hear : stay ring](../../../images/speaker-vert.gif)
Set of two rings linked together by the stay vanes.
shaft ![click to hear : shaft click to hear : shaft](../../../images/speaker-vert.gif)
Cylindrical part that communicates the movement of the turbine’s runner to the generator’s rotor.
hydraulic turbine ![click to hear : hydraulic turbine click to hear : hydraulic turbine](../../../images/speaker-vert.gif)
Machine whose runner is powered by water; it transmits mechanical energy to the rotor to make it turn.