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CONTENTS.

field current caused by It. Effect of inductance in the exciter field.
Calculation and construction of the transient phenomena of a poly-
phase alternator short circuit,

21. The transients of the single-phase alternator short circuit.
The permanent double-frequency pulsation of armature reaction
and of field current. The armature transient depending on the
phaHC of the wave, Combination of full-frequency transient and
double-frequency permanent pulsation of field current, and the
shape of the field current resulting therefrom. Potential difference
at field terminal at short circuit, and its industrial bearing.

V. -— HINXJUQ-MNMUOY TRANSIENT OF IRONCLAD CIRCUIT.,.. 52

22. Absence of proportionality between current and magnetic
flux in ironclad circuit, Numerical calculation by step-by-step
method, Approximation of magnetic characteristic by Frohlieu'w
formula, and its rationality.

23. General expression of magnetic flux in ironclad circuit. Its
introduction in the differential equation of the transient, Integra-
tion, and calculation of a numerical instance. High-current values
and steepness of ironclad magnetic tranmant, and its industrial
bearing.

K VL -"'I>OtIBLM-MNEtt«Y TltANHIKNTB ......... ..... ........ 59

24. Single-energy transient, after separation from permanent term,
as a steady decrease of energy. Double-energy transient consisting
of energy-dissipation factor and energy-transfer factor. The latter
periodic or unidirectional. The latter rarely of industrial importance.
2$, Pulsation of energy during transient. Relation between maxi-
mum current awl maximum voltage, The natural impedance and
the natural admit tanmi of the circuit. Calculation of maximum
voltage from maximum current, and inversely. Instances of line
short circuit, ground on cable, lightning stroke, Relative values of
transient cummin and voltages, in different olofwoM of circuits.

211 Trigonometric functions of the periodic factor of the transient.
Calculation of the frequency. Initial values of current and voltage,
27, The imwcr-diHHipation factor of the transient. Duration of the
doubltHworgy tranwwit the harmonic mean of the duration of the
magnetic and of tlw dMwtrio tranwemt, The dissipation expo-
nent, awl its umml approximation. The complete equation of the
double-energy tranniont. Calculation of numerical instance,

VII. — LINK OHOILLATIONH ..... ............. ............. 72

28. Review of the charaoteriHtioH of the double-energy transient:
periodio and transient factor; relation between current and voltage;
the periodic eomixm«mt and tine frequency; the trannicinl compo-

nent and the duration; the initial valuer of current and voltage*



	CONTENTS. field current caused by It. Effect of inductance in the exciter field. Calculation and construction of the transient phenomena of a poly- phase alternator short circuit, 21. The transients of the single-phase alternator short circuit. The permanent double-frequency pulsation of armature reaction and of field current. The armature transient depending on the phaHC of the wave, Combination of full-frequency transient and double-frequency permanent pulsation of field current, and the shape of the field current resulting therefrom. Potential difference at field terminal at short circuit, and its industrial bearing.

	V. -— HINXJUQ-MNMUOY TRANSIENT OF IRONCLAD CIRCUIT.,.. 52 22. Absence of proportionality between current and magnetic flux in ironclad circuit, Numerical calculation by step-by-step method, Approximation of magnetic characteristic by Frohlieu'w formula, and its rationality. 23. General expression of magnetic flux in ironclad circuit. Its introduction in the differential equation of the transient, Integra- tion, and calculation of a numerical instance. High-current values and steepness of ironclad magnetic tranmant, and its industrial bearing. K VL -"'I>OtIBLM-MNEtt«Y TltANHIKNTB ......... ..... ........ 59 24. Single-energy transient, after separation from permanent term, as a steady decrease of energy. Double-energy transient consisting of energy-dissipation factor and energy-transfer factor. The latter periodic or unidirectional. The latter rarely of industrial importance. 2$, Pulsation of energy during transient. Relation between maxi- mum current awl maximum voltage, The natural impedance and the natural admit tanmi of the circuit. Calculation of maximum voltage from maximum current, and inversely. Instances of line short circuit, ground on cable, lightning stroke, Relative values of transient cummin and voltages, in different olofwoM of circuits. 211 Trigonometric functions of the periodic factor of the transient. Calculation of the frequency. Initial values of current and voltage, 27, The imwcr-diHHipation factor of the transient. Duration of the doubltHworgy tranwwit the harmonic mean of the duration of the magnetic and of tlw dMwtrio tranwemt, The dissipation expo- nent, awl its umml approximation. The complete equation of the double-energy tranniont. Calculation of numerical instance,

	VII. — LINK OHOILLATIONH ..... ............. ............. 72 28. Review of the charaoteriHtioH of the double-energy transient: periodio and transient factor; relation between current and voltage; the periodic eomixm«mt and tine frequency; the trannicinl compo- nent and the duration; the initial valuer of current and voltage*