Háromfázisú

Háromfázisú refers to a three-phase system, commonly encountered in electrical engineering. A three-phase electric power system is a method of generating, transmitting, and distributing alternating current (AC) electrical power. It is characterized by three separate AC voltages that are out of phase with each other. Typically, these voltages are offset by 120 degrees. This configuration offers several advantages over single-phase systems, including more efficient power transmission and the ability to create rotating magnetic fields, which are essential for the operation of many types of electric motors.

In a three-phase system, power is delivered through three conductors, each carrying one of the phase voltages. The loads are connected in either a wye (or star) configuration or a delta configuration. In a wye connection, a neutral point is often present, allowing for both line-to-line and line-to-neutral voltage connections. In a delta connection, there is no neutral point. Three-phase power is the standard for most industrial and commercial power distribution due to its efficiency and ability to power larger, more demanding machinery. Residential power is typically supplied as single-phase, though in some cases, three-phase power may be available for larger homes or specific appliances. The generation of three-phase power in alternators is also a fundamental aspect of its design, utilizing three sets of coils positioned at 120-degree intervals.