The voltage levels of power transformers vary widely depending on the specific application and power system requirements. However, some common voltage levels used in power transformers are:
Low voltage (LV): Typically ranges from 240 V to 1000 V in residential and commercial applications.
Medium voltage (MV): Typically ranges from 1 kV (1000 V) to 72.5 kV in industrial and distribution networks.
High voltage (HV): Typically ranges from 72.5 kV to 550 kV in transmission and distribution networks.
Extra high voltage (EHV): Typically ranges from 550 kV to 1200 kV and above, used in long-distance transmission of electricity.
Ultra-high voltage (UHV): Typically refers to voltage levels above 1200 kV and is used in very long-distance transmission of electricity, typically for intercontinental power transmission.
Substation voltage levels: Power transformers are commonly used in substations, which are intermediate points in the power grid where electricity is transformed from one voltage level to another. Substation voltage levels can vary widely depending on the specific design and requirements of the power grid, but common voltage levels used in substations include 138 kV, 230 kV, 345 kV, 500 kV, and 765 kV.
Custom voltage levels: In some cases, power transformers may be designed to operate at custom voltage levels to meet specific requirements of a particular power system or industrial application. These custom voltage levels can vary depending on the specific needs of the application and are designed accordingly.
It's important to note that voltage levels used in power transformers are determined based on factors such as power generation capacity, transmission distance, and system efficiency, and are regulated by relevant electrical standards and regulations in a particular country or region. The voltage levels used in power transformers may also evolve over time as power systems and technologies advance.
