- Fast Fourier Transform (FFT)
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A method for converting a signal into its frequency components, allowing for a better analysis of that signal.
- flux
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Rate that an electric field flows through a given area, proportional to the number of electric field lines going through a virtual surface.
- flux density
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The amount of flux passing through a defined area that is perpendicular to the direction of the flux.
- Flux Density Integral Zero Cross (FDZC)
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The FDZC is the point at which the integral of the flux waveform is zero volts, which affords the greatest sensitivity to detecting a shorted turn in a coil.
- keyphasor
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An electric pulse derived from a point on a rotating shaft that serves as a zero phase reference for finding imbalance on a rotor.
- lag
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An alternating current that reaches its maximum value up to 90 degrees later than the voltage that produces it.
- lead
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An alternating current that reaches its maximum value up to 90 degrees ahead of voltage that produces it.
- Rotor Flux Monitoring System (RFM)
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A Cutsforth product that detects variances in the magnetic flux within a generator that indicate deterioration of winding insulation.
- shorted turns
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Shorted turns result when insulation fails between windings in a rotor winding of a generator. Shorted turns limit the load a generator can produce. Shorted turns may result in failures leading to outages.
- waveform
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A variable that changes with time, usually representing a voltage or current. Waveforms are graphed with time on the horizontal axis.
The largest and smallest value of the waveform within a given range.
A method for converting a signal into its frequency components, allowing for a better analysis of that signal.
Rate that an electric field flows through a given area, proportional to the number of electric field lines going through a virtual surface.
The amount of flux passing through a defined area that is perpendicular to the direction of the flux.
The FDZC is the point at which the integral of the flux waveform is zero volts, which affords the greatest sensitivity to detecting a shorted turn in a coil.
An electric pulse derived from a point on a rotating shaft that serves as a zero phase reference for finding imbalance on a rotor.
An alternating current that reaches its maximum value up to 90 degrees later than the voltage that produces it.
An alternating current that reaches its maximum value up to 90 degrees ahead of voltage that produces it.
The magnetic fields created by the generator windings.
A Cutsforth product that detects variances in the magnetic flux within a generator that indicate deterioration of winding insulation.
A sensing device which measures the rotor flux and provides a signal output.
Shorted turns result when insulation fails between windings in a rotor winding of a generator. Shorted turns limit the load a generator can produce. Shorted turns may result in failures leading to outages.
A variable that changes with time, usually representing a voltage or current. Waveforms are graphed with time on the horizontal axis.