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A simple wye Countryside wye near Lüderitz, Namibia. In railroad structures and rail terminology, a wye (like the 'Y' glyph) or triangular junction (often shortened to just triangle) is a triangular joining arrangement of three rail lines with a railroad switch (set of points) at each corner connecting to the incoming lines.
A three-phase system may be arranged in delta (∆) or star (Y) (also denoted as wye in some areas, as symbolically it is similar to the letter 'Y'). A wye system allows the use of two different voltages from all three phases, such as a 230/400 V system which provides 230 V between the neutral (centre hub) and any one of the phases, and 400 V ...
An example delta-wye transformer schematic. A delta-wye transformer is a type of three-phase electric power transformer design that employs delta-connected windings on its primary and wye/star connected windings on its secondary. A neutral wire can be provided on wye output side. It can be a single three-phase transformer, or built from three ...
Exhaled air is not reused by the system. Outside stem and yoke valve (OS&Y) Type of gate valve actuator arranged such that the valve stem moves in and out of the handle, thus externally indicating whether the valve is open or shut, unlike the more common gate valve wherein the stem rotates and only the gate moves up and down inside the fixture.
The tongue of each coupler head enters the throat of the opposite coupler head, where the hook on the tongue turns a vertically mounted, spring-loaded coupling pin against the force of the spring. Once the hook passes the coupling pin, the spring force returns the coupling pin to its original position, holding the hook head in the coupling.
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Y or y: Wye winding, (also called a star). Each phase terminal connects to one end of a winding, and the other end of each winding connects to a common central point, so that the configuration resembles the letter Y. The central point may be connected outside of the transformer to a system neutral.