1887

Directives Concerning the Protection of Telecommunication Lines Against Harmful Effects from Electric Power and Electrified Railway Lines. Volume II

Calculating Induced Voltages and Currents in Practical Cases

image of Directives Concerning the Protection of Telecommunication Lines Against Harmful Effects from Electric Power and Electrified Railway Lines. Volume II

The Directives provide a comprehensive description of electromagnetic effects due to the close proximity of telecommunication lines to power and electrified railway systems. Such effects may result in danger to personnel, damage to telecommunication equipment, deterioration of telecommunication transmission quality or to disturbance of signalling. Volume II - Calculating induced voltages and currents in practical cases - describes the methods for evaluating voltages and currents resulting from capacitive, inductive and conductive coupling in a variety of commonly-encountered situations.

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Calculation of Capacitive Coupling

In a very general sense the capacitive coupling expresses the relation between the potential (as a source) of the inducing electric line and the induced charging current, per unit length, (as a result) occurring on the telecommunication circuit. In the case of induced line with conductors insulated from earth in a parallel exposure the coupling is given as a relation between the inducing voltage and the wire-to-earth voltage caused by capacitive induction.

English

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