| 摘要 |
<p>PURPOSE:To reduce the installation space by making a pit along the vicinity of a bushing or a transformer and then laying the connection conduit buses in the pit while-crossing thereby shortening the connection conduit bus. CONSTITUTION:The main bus comprises two three-phase one-enclosure type bus sets and constructed integrally with a bus side disconnector 1. Each line lead-out part is branched in single phase and connected with an instrument current transformer 2, a circuit breaker 3, a line side disconnector 4, and an instrument voltage transformer 5 in the direction perpendicular to the main bus and then connected with a three-phase one-enclosure connection conduit bus 7 through a falling connection bus 6. One line of the bus 7 is set at the ground level while the other line is set at the level in a pit 9 while opposing each other. They cross in the way and one line drops down to the level in the pit 9 while the other line rises up to the ground level and connected with a bushing 8. A heavy machine entrance space and a machine carry-out space are provided on the ground level above the pit 9.</p> |
