This documentation is archived and is not being maintained. A desktop has a logical display surface and contains user interface objects such as windows, menus, and hooks; it can be used to create and manage windows. Each desktop object is a securable object. When a desktop is created, it is associated with the current window station of the calling process and assigned to the calling thread.
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 independent single-phase units.
In a wye system, the supply service line-to-line voltage is 1.73 times the voltage from any phase to neutral. Delta power is used for motors, 3-phase heaters, anywhere you don't need a neutral. The biggest use of delta is in power transmission.he neutral is grounded at the service entrance. Wye systems must be used where you have single phase loads that you must feed. Interestingly, if you hide the neutral, you really can't tell the difference between star and delta systems. The phase-to-phase voltage is exactly the same.