| 摘要 |
<p>PURPOSE:To reduce the current through a grounding conductor connected to a metal container for housing each gas-insulated equipment of a gas-insulated switchgear by restricting the magnetic flux of external magnetic field generated by the current through a main circuit of a three-phase gas-insulated switchgear. CONSTITUTION:A buried phase-to-phase connecting conductor 3 is electrically connected between the different phases of respective metal containers 20 housing each gas-insulated equipment of a gas-insulated switchgear, and a closed loop between different phases is formed by a metal container 20 between different phases. In this gas-insulated switchgear, magnetic flux generated by an induction current flowing to a closed loop between different phases by the phase-to-phase connecting conductor 3 is interlinked with a ground closed loop within the same phase formed by a grounding line 8, and the magnetic flux due to the main circuit current can be reduced.</p> |
