TRANSFORMER DIRECT-COUPLED GAS-INSULATED SWITCHGEAR

PURPOSE:To decrease joints and to reduce the whole apparatus dimension by using a gas-insulated bus far larger than a cable capacity. CONSTITUTION:Respective gas-insulated switchgears 15a-15c are connected with the intermediate parts of respective gas-insulated buses 10a-10c via connecting buses 11a-11c. The connecting buses 11a-11c are provided by rising in L-shapes from the upper parts of respective gas-insulated buses 10a-10c arranged in the vicinity of a basic plane and respective gas-insulated switchgears 15a-15c are connected with the ends of the horizontal parts of the connecting buses. In this case, the connection between respective single-phase transformers 11a-11c and that between gas-insulated switchgears 15a-15c are performed by gas-insulated buses 10 remarkably larger than a cable capacity. In this manner, joints can be decreased and an apparatus can be made small as compared with a cable junction.