Screened medium-voltage substation
First Claim
1. A medium-voltage substation including at leash two insulative material chambers filled with a gas having good dielectric properties, each chamber being provided with at least one opening for the gas-tight passage of a set of three-phase busbars, said chambers being disposed side-by-side with their openings in contact to define a single gas-tight interior volume, said chambers each containing a three-position three-phase switch having a first position in which said switch connects each of said busbars to first gas-tight electrical feed-throughs leading to the outside of said chamber, a second position in which said switch connects said first feed-throughs to second gas-tight feed-throughs leading to the outside of said chamber and connected to ground, and a third position in which each of said first feed-throughs is disconnected from the corresponding busbar, said first feed-throughs of at least one chamber being each electrically connected to a single-phase cable, said first feed-throughs of each chamber being electrically connected either to a fuse or to a pole of a circuit-breaker, said fuses and/or circuit-breaker poles being disposed in an insulative material compartment.
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Accused Products
Abstract
A medium-voltage substation includes at least two insulative material chambers each provided with at least one opening for the gas-tight passage of a set of three-phase busbars. Each chamber contains a three-position three-phase switch for connecting the busbars to first gas-tight electrical feed-throughs and for connecting the first feed-throughs to second gas-tight feed-throughs connected to ground. The first feed-throughs of at least one chamber are each electrically connected to a single-phase cable. The first feed-throughs of each chamber are electrically connected either to a fuse or to a pole of a circuit-breaker disposed in an insulative material compartment.
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Citations
10 Claims
- 1. A medium-voltage substation including at leash two insulative material chambers filled with a gas having good dielectric properties, each chamber being provided with at least one opening for the gas-tight passage of a set of three-phase busbars, said chambers being disposed side-by-side with their openings in contact to define a single gas-tight interior volume, said chambers each containing a three-position three-phase switch having a first position in which said switch connects each of said busbars to first gas-tight electrical feed-throughs leading to the outside of said chamber, a second position in which said switch connects said first feed-throughs to second gas-tight feed-throughs leading to the outside of said chamber and connected to ground, and a third position in which each of said first feed-throughs is disconnected from the corresponding busbar, said first feed-throughs of at least one chamber being each electrically connected to a single-phase cable, said first feed-throughs of each chamber being electrically connected either to a fuse or to a pole of a circuit-breaker, said fuses and/or circuit-breaker poles being disposed in an insulative material compartment.
Specification