Dictionary of Electrical Engineering

Commonly used terms in the Electrical industry.

electric vector potential
a vector function that is used to derive solutions for electric and magnetic fields.
magnetic vector potential
an auxiliary field used to simplify electromagnetic computations. This field satisfies a wave equation, the curl of this field is related to the magnetic field intensity vector field, and the divergence of this field is specified by some gage which is to be specified in each problem.
potential
an auxiliary scalar or vector field that mathematically simplifies the solution process associated with vector boundary value problems. See also Hertzian potential.
potential coil
a long, finely wound, straight coil, similar in operation to a Chat-tuck coil, that is used with a fluxmeter to measure magnetic potential difference between a point in a magnetic field and a flux-free point in space.
potential source rectifier exciter
a source of energy for the field winding of a synchronous machine obtained from a rectified stationary AC potential source. The AC potential can be obtained from the machine phase voltages, or from an auxiliary source. The components of the exciter are the potential source transformer and the rectifiers (including possible gate-circuitry).
potential transformer (PT)
a device which measures the instantaneous voltage of an electric power line and transmits a signal proportional to this voltage to the system's instruments.
See voltage transformer
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