Utilities

Utilities

Of or related to any publicy utility institution mandated with maintaining the infrastructure for a particular public service; such as the provision of water, gas and electricity.

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Utilities > 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 ...

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 energized via another relay. An example is a measuring relay, for the purpose of providing higher rated contacts, or introducing a time delay, or providing ...

average maintained foot-candles (lighting)

Electrical equipment; Electricity

(ILL x CU x LLF)/(PS x RW)

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 ...