Gas insulated switching apparatus

A gas insulated switching apparatus comprising a power transmission and reception line unit connected to a bus-bar extending horizontally and a transformer line unit disposed adjacent to the power transmission and reception line unit and connected to the bus-bar, wherein

• the power transmission and reception line unit includes:
• a first breaker disposed such that an axis thereof is perpendicular to a horizontally extending installation surface,
• a first bus-bar side disconnector that is connected to a side surface of the first breaker facing a bus-bar side of the first breaker and is connected to the bus-bar,
• a connection tank having a first connection port opening to a first breaker side of the connection tank and connected, via the first connection port, to a side surface of the first breaker, the side surface of the first breaker on an opposite side from the side surface of the first breaker facing the bus-bar side of the first breaker,
• a first line-side disconnector connected to the connection tank via a second connection port of the connection tank opening in an opposite direction to the first connection port,
• a first cable head that is connected to a bottom of the first line side disconnector and is connected to a first power cable,
• a second line side disconnector that is connected to the connection tank via a third connection port of the connection tank opening in a same direction as the second connection port, the third connection port being disposed at an interval between the power transmission and reception line unit and the transformer line unit in a horizontally extending extension direction in which the bus-bar extends with respect to the second connection port, and
• a second cable head that is connected to a bottom of the second line side disconnector and is connected to a second power cable,
• the transformer line unit includes:
• a second breaker disposed such that an axis thereof is perpendicular to the installation surface,
• a second bus-bar side disconnector that is connected to a side surface of the second breaker facing in a same direction as the bus-bar side of the first breaker and is connected to the bus-bar,
• a third line-side disconnector connected to a side surface of the second breaker on an opposite side from the side surface of the second breaker facing the bus-bar side, and
• a third cable head that is connected to a bottom of the third line side disconnector and is connected to a third power cable,
• when viewed from the first breaker, the first cable head is disposed in a horizontally extending unit direction orthogonal to the extension direction in which the bus-bar extends,
• the first and second cable heads are arranged in the extension direction in which the bus-bar extends at the interval between the power transmission and reception line unit and the transformer line unit,
• when viewed from the second breaker, the second cable head is disposed behind the third cable head in the unit direction, and
• a part of the connection tank including the third connection port is disposed between the third cable head and the second cable head in the unit direction.