Publication

COMPUTER MODEL AHD IMPULSE CURRENT INJECTIONS FOR OPTIMUM HEMP PROTECTION OF CABLES

Michel Ianoz
1981

Abstract

A step by step procedure combining analytical methods and simplified laboratory testing. is proposed for the study of cable protection against HEMP. The three steps of the method are: development of a cable coupling model, surface transfer impedance measurements by impulse current injections and EMP simulation on long cables by impulse current injections in the sheath. The second step is particularly important when the theory cannot take into account saturation effects in ferromagnetic sheaths. The third step represents a practical verification on long cables of the model proposed in the first step. This procedure was applied with good results to aerial cables proving the validity of the computer model.

Official source

https://infoscience.epfl.ch/entities/publication/22ae4b8f-c19f-4a43-85ce-2f8b92ed987a

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Michel Ianoz
1981

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/22ae4b8f-c19f-4a43-85ce-2f8b92ed987a

About this result

Related concepts (31)

Electrical cable

An electrical cable is an assembly of one or more wires running side by side or bundled, which is used to carry electric current. One or more electrical cables and their corresponding connectors may be formed into a cable assembly, which is not necessarily suitable for connecting two devices but can be a partial product (e.g. to be soldered onto a printed circuit board with a connector mounted to the housing). Cable assemblies can also take the form of a cable tree or cable harness, used to connect many terminals together.

Submarine communications cable

A submarine communications cable is a cable laid on the seabed between land-based stations to carry telecommunication signals across stretches of ocean and sea. The first submarine communications cables laid beginning in the 1850s carried telegraphy traffic, establishing the first instant telecommunications links between continents, such as the first transatlantic telegraph cable which became operational on 16 August 1858.

Electromagnetic pulse

An electromagnetic pulse (EMP), also referred to as a transient electromagnetic disturbance (TED), is a brief burst of electromagnetic energy. The origin of an EMP can be natural or artificial, and can occur as an electromagnetic field, as an electric field, as a magnetic field, or as a conducted electric current. The electromagnetic interference caused by an EMP can disrupt communications and damage electronic equipment. An EMP such as a lightning strike can physically damage objects such as buildings and aircraft.

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