Effect of Wiring Method on Coupling of Cables Under HEMP Irradiation<bold> </bold>

The electromagnetic energy will be coupled into the cable terminal equipment through the cable coupling under the explosion of the high altitude nuclear electromagnetic pulse, thus causing damage to the sensitive electronic system. Different wiring methods make the cable have different effects on the resistance of the high altitude nuclear electromagnetic pulse. It analyzes the coupling characteristics of the different types of cables under the irradiation of high altitude electromagnetic pulse by using the CST electromagnetic simulation software for simulation research. The research results shown that the peak induced current under the right-angle wiring mode is roughly 3/4 of the linear wiring mode between two points with parallel electric field. Due to the mutual coupling of cables, the anti-electromagnetic coupling of the cable is better than that of laying the cable separately. The electromagnetic energy embedded in the cable in the dielectric layer is less than exposing to the outside. It is more obvious to the shielding effect of the dielectric layer with a large electrical conductivity. The conclusion is that there is a certain engineering application value.<bold> </bold>