GROUND STRUCTURE OF ELECTRIC INSTALLATION

• Main Authors: TANAKA KOKI, YAMANOI TAKASHI, MORITA TAKESHI, KAWAHARA TAKAHARU, ITO KAZUHIKO, AKAGI MASAHARU, IMAMURA HIDEKI
• Format: Patent
• Language: English; Japanese
• Published: 06.04.2017
• Subjects: BASIC ELECTRIC ELEMENTS; CURRENT COLLECTORS; ELECTRICITY; LINE CONNECTORS

PROBLEM TO BE SOLVED: To provide the ground structure of an electric installation in which equipotentialization, for reducing the potential difference between the ground terminals of a plurality of electric installations, is carried upon intrusion of a surge containing high frequency components due to lightning stroke, while suppressing potential rise of the whole grounding wire.SOLUTION: The ground structure of an electric installation is used for giving the ground potential to a plurality of electric installations. The ground structure includes: a plurality of insulated wires disposed in a lattice pattern in the ground, and connected electrically at each lattice point; a plurality of bare wires disposed in a lattice pattern in the ground, and connected electrically with the plurality of lattice points of the plurality of insulated wires; at least one ground electrode embedded in the ground, and connected electrically with the plurality of insulated wires or plurality of bare wires; and a plurality of wirings for electrically connecting the ground terminals of a plurality of electric installations with the plurality of insulated wires or plurality of bare wires.SELECTED DRAWING: Figure 1 【課題】雷撃等による高周波成分を含むサージが侵入した際に、複数の電気設備の接地端子間の電位差を小さくする等電位化を行うと共に、接地線全体の電位上昇を抑制することができる電気設備の接地構造を提供する。【解決手段】この電気設備の接地構造は、複数の電気設備に大地電位を与えるために用いられる接地構造であって、地中において格子状に配設され、各格子点において電気的に接続された複数の絶縁電線と、地中において格子状に配設され、複数の絶縁電線の複数の格子点に電気的に接続された複数の裸電線と、地中に埋設され、複数の絶縁電線又は複数の裸電線に電気的に接続された少なくとも１つの接地極と、複数の電気設備の接地端子を複数の絶縁電線又は複数の裸電線に電気的に接続する複数の配線とを含む。【選択図】図１