Electricity

Electricity

A database referring to the existence of a flow of electric charge.

Industry: Utilities

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Electricity

Autonomous photovoltaic system

Electrical equipment; Electricity

A stand-alone Photovoltaic system that has no back-up generating source. The system may or may not include storage batteries. Most battery systems are designed for a certain minimum number of days or ...

Autotransformer

Electrical equipment; Electricity

A transformer in which at least two windings have a common section. They are use to either "buck" or "boost" the incoming line voltage.

Auxiliary power

Electrical equipment; Electricity

The power required for correct operation of an electrical or electronic device, supplied via an external auxiliary power source rather than the line being measured.

Auxiliary relay

Electrical equipment; Electricity

An all-or-nothing relay energised via another relay. An example is a measuring relay, for the purpose of providing higher rated contacts, or introducing a time delay, or providing multiple outputs ...

Azimuth

Electrical equipment; Electricity

The angle between true north and the projection of a surface normal to the horizontal plane, measured clockwise from the north. As applied to a Photovoltaic array, 180 degrees azimuth means the array ...