Yksifaasijärjestelmässä

Yksifaasijärjestelmässä refers to a single-phase electrical system. In such a system, there is a single alternating voltage waveform. This is in contrast to a three-phase system, which utilizes three distinct alternating voltage waveforms, typically offset by 120 degrees from each other. Single-phase power is commonly used in residential and small commercial applications for powering everyday appliances and lighting.

The simplicity of single-phase power distribution makes it cost-effective for low-power demands. The voltage in a single-phase system typically alternates between a positive and negative peak with a consistent frequency, usually 50 or 60 Hertz. This oscillation is what drives the alternating current in the circuit. While sufficient for most household needs, single-phase systems are generally less efficient for powering larger, high-demand machinery compared to their three-phase counterparts. The power delivery in a single-phase system also fluctuates throughout the cycle, dropping to zero twice per cycle, whereas three-phase systems provide a more constant and even power flow.