To prevent the induction trouble of a telecommunication line, etc., laid in the vicinity of a bus duct, by arranging a screen conductor inside or outside a can so that it may intercept the normal of the outer periphery of a current conductor.
For a conductor (BD)1 for a bus duct, an insulating cover 1b is applied to the periphery of a band-shaped current conductor 1a made of aluminum or the like. A can 2 is one where can pieces 2a made of a bent iron plate or the like are combined, and it is equipped with a storage 2b for housing a conductor for bus duct and a flange 2c. Screen conductors 3 are made of conductive plates such as iron plates inside and outside the can 2, and they are arranged on both sides of the BDI and at the external face of the flange 2c. The screen conductor 3 arranged at the outer periphery of the flange 2c is U-shaped in section. Leaked magnetic fluxes are reduced by intercepting the sections which can not be shielded with the screen conductors 3 arranged on both sides of BDI, that is, the normal A in contact with the end of the screen conductors 3 arranged on both sides of BDI out of the normal of the periphery of the current application conductor 1a.
| JPS61247204 | GAS INSULATED SWITCHGEAR |
SAEKI EIJI
ENDO TAKUZO
