Appendix B: Glossary Of Terms - AEMC 8335 User Manual

APPENDIX B
GLOSSARY OF TERMS
Ampere: unit of electrical current intensity (A symbol).
Bandwidth: frequency range on which an instrument supplies a precise
measurement.
Fundamental component: component whose frequency is the fundamental
frequency.
Cut: reduction in voltage at a point in the electrical power network below the cut
threshold.
Voltage dip: temporary reduction in the voltage amplitude at a point in the electri-
cal power network below a given threshold.
Imbalance in voltage in a polyphased electrical power network: status where
efficient values for voltages between conductors (fundamental component) and/or
differences in phase between successive conductors are not equal.
Peak factor: relation between the peak value and efficient value of the current.
Phase displacement factor: relationship between the active power and apparent
power of the fundamental component.
Power displacement factor: expresses the difference between the apparent and
active power when and only when the relationship of the voltage phase and current
to the fundamental is taken into account.
Factor K: number based on the contents of a harmonic of a charge current that
determines the maximum load on a source of energy. The K factor calculated by the
PowerPad is measured and compared with the one specified by the transformer
®
manufacturer. It gives the percentage of "harmonics load" of the transformer.
Power factor: relationship between active and apparent power.
Flicker: The visual effect produced by the variation in electrical voltage.
Frequency: number of full voltage cycles produced in one second.
Harmonics: voltage and current existing in electrical material at frequencies that
are multiples of the fundamental frequency.
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Power Quality Analyzer Model 8335