Electricity

Electricity

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

Industry: Utilities

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Electricity

Reel

Electrical equipment; Electricity

A cylinder device used to hold wire and cable until installed. There are standard reel sizes that are used in the electrical industry that are either wood (non-returnable) or steel (returnable).

Reference range

Electrical equipment; Electricity

A specific range of values of an influence quantity within which the transducer complies with the requirements concerning intrinsic errors.

Reference value

Electrical equipment; Electricity

A specified single value of an influence quantity at which the transducer complies with the requirements concerning intrinsic errors.

Refererence conditions

Electrical equipment; Electricity

Conditions of use for a transducer prescribed for performance testing, or to ensure valid comparison of results of measurement.

Reflector

Electrical equipment; Electricity

A device used to re-direct the luminous flux from a light source by the process of reflection.

Refractor

Electrical equipment; Electricity

A device used to re-direct the luminous flux from a light source by the process of refraction.

Regulating transformer

Electrical equipment; Electricity

A transformer used to vary the voltage, or phase angle, of an output circuit. It controls the output within specified limits and compensates for fluctuations of load and input voltage.