Tegangan Induksi pada Atap Rumah di Bawah Saluran Transmisi

Abstract

High voltages on the transmission lines cause electric and magnetic field effects that affect to the surrounding environment. If an electric field strikes a conductive object such as a roof, the roof becomes charged and creates an induced voltage between the roof and the ground. This study will observe the influence of the size of the house roof, the height of the roof trusses, and the distance from the roof to the conductor wire. This study also aims to observe the effect of induced voltage and current on the house roof on human safety. This study uses a version of the dimensional scale, with a ratio of 1: 7 from the actual size. The data obtained was analyzed to see the effect of the distance, the height of the trusses, and the size of the house roof. In a type 21 house with a truss height of 0,21 meters and a roof-to-wire distance of 1 meter, the measured voltage is 368 volts. If the truss height is increased to 0,29 meters, the measured voltage increases to 382 volts. If the roof-to-wire distance is increased to 1,07 meters, then the voltage on the roof of a type 21 house and a truss height of 0,21 drops to 319 volts, and the voltage on the roof of a house with a truss height of 0,29 drops to 343 volts. From the data obtained it can be concluded that the magnitude of the induced voltage is proportional to the size of the roof of the house and the height of the roof trusses, while the induced voltage is inversely proportional to the distance from the roof to the wire. The measured induction current does not reach 100 microamperes, so it is safe for human safety. The human body can act as a charge bridge between the roof and the ground, so that when touched by humans, the roof's charge runs out and the induced voltage is almost zero.