| 摘要 |
PROBLEM TO BE SOLVED: To reduce the cost and simplify the installation work by arranging a cabinet at a branch position of underground power distribution system on consumer's side and housing and arranging a high voltage lead-in switches, circuit breakers, gas-insulated boxes, high voltage cutout fuses, transformer and low voltage lead-in branch device internally. SOLUTION: A pair of switches 1, 2 are connected in series and a pair of ground disconnectors 3, 4 and a disconnector 5 are connected between high voltage trunk lines, and these are housed inside the same gas-insulated box 6. Outside the gas-insulated box 6, one end of the disconnector 5 is connected to a leader line and connected to a high voltage cutout fuse 7, and one end of this fuse 7 is connected to a low voltage lead-in branch unit 9 through a transformer 8. Moreover, to the secondary side of the low voltage lead-in branch unit 9, a low voltage power supply outlet 10 with breaker is connected, and each of these equipments 1 to 10 is housed in the cabinet installed at the branch position on the consumer side of the underground power distribution system. |
