| 摘要 |
A disconnecting means for very high-voltage electrical installations, comprising a metallic enclosure for containing dielectric fluid, at least two electrical contact members each connected through insulating crossmembers to an exterior conducting element of the circuit to be disconnected, at least one earthed contact jaw, and a movable connecting element adapted to interconnect the two contact members of said circuit in one of its positions and of being earthed in another position, characterized in that said movable element carries a metallic guard part with which it is in permanent electrical connection, said guard part, when the moving element is earthed, automatically and jointly with the movable element assuming the role of a protective screen at earth potential, by being interposed between the contact members.
|
