| 摘要 |
<p>PURPOSE:To facilitate design of arrangement by connecting a switchboard encapsulating insulation gas with a phase separation bus connecting between a generator and a main transformer and supporting the switchboard only through the phase separation bus. CONSTITUTION:An enclosed switchboard 6A is enclosed air-tightly by an outer sheath 19A and a flange 18A, where a flange 20 is formed on the outer sheath 19A. The enclosed switchboard 6A is supported directly by a phase separation bus 4 when the flange 20 and a flange 21 at the side of a branch sheath 4E' are tightened through bolts and the like. The outer sheath 19A and the flange 18A are ground through the tightening. A pair of transformers 7 are contained in the enclosed switchboard 6A and connected through a connecting conductor 15A with a bushing 12. SF6 gas is encapsulated, as insulation gas, in the enclosed switchboard 6A with pressure of about 0.5kg/cm<2>. Consequently, the volume is reduced by a factor of 10 and the weight is also reduced considerably.</p> |
