Non-electrical device for replacing a current sensor in an arc-extinguishing chamber of a switch-disconnector, and a switch-disconnector comprising such a non-electrical device
A non-electrical device ( 40 ) includes first and second half-housings which are produced in a plastic material, are joined fixedly to one another, define an axis along which a passage for an electrical conductor passes through the first and second half-housings, and delimit between them an internal volume, which is separated from the passage and which surrounds the passage all around the axis. The first half-housing incorporates, by moulding, mechanical reinforcing elements which extend substantially parallel to the axis in the internal volume until they are in contact with the second half-housing.
1. A non-electrical device for replacing a current sensor in an arc-extinguishing chamber of a switch-disconnector, the non-electrical device comprising first and second half-housings which:
are produced in a plastic material,
are joined fixedly to one another,
define an axis along which a passage for an electrical conductor passes through the first and second half-housings, the passage being substantially centered on the axis, and
delimit between them an internal volume which is separated from the passage and which surrounds the passage all around the axis, in which the first half-housing incorporates by moulding mechanical reinforcing elements which extend substantially parallel to the axis in the internal volume until they are in contact with the second half-housing.
2. The non-electrical device according to claim 1 , in which the non-electrical device consists of first and second half-housings.
3. The non-electrical device according to claim 1 , in which the internal volume is, apart from the mechanical reinforcing elements, left substantially empty, in particular being free of any added resin.
4. The non-electrical device according to claim 1 , in which at least some of the mechanical reinforcing elements belong to at least one group all the mechanical reinforcing elements of which are aligned in a direction transverse to the axis.
5. The non-electrical device according to claim 4 , in which the volume consists of two adjoining sub-volumes, namely:
an annular sub-volume that directly surrounds the passage and extends all around the axis, and
a remote sub-volume that is farther from the axis than the annular sub-volume and extends only partly around the axis,
and in which all the mechanical reinforcing elements of the or each group are disposed in the remote sub-volume.
6. The non-electrical device according to claim 4 , in which the or each group consists of at least three mechanical reinforcing elements that are substantially regularly distributed in said direction transverse to the axis.
7. The non-electrical device according to claims 4 , in which the mechanical reinforcing elements of the or of each group are in one piece.
8. The non-electrical device according to claim 1 , in which the first and second half-housing include respective bottom walls that are disposed facing one another along the axis and each of which separates the internal volume from the outside of the non-electrical device, and in which each mechanical reinforcing element projects along the axis from the bottom wall of the first half-housing to a free end of the mechanical reinforcing element, that free end being in contact along the axis with the bottom wall of the second half-housing.
9. The non-electrical device according to claim 8 , in which each of the mechanical reinforcing elements incorporates ribs each of which extends from the bottom wall of the first half-housing to the free end of the mechanical reinforcing element.
10. The non-electrical device according to claim 1 , in which the first half-housing incorporates by moulding projecting elements that are disposed outside the internal volume and are adapted during assembly of the first and second half-housings to be clipped into complementary recesses provided by the second half-housing outside the internal volume.
11. A switch-disconnector including one or more poles and an insulating enclosure that supports the pole or poles, in which the or each pole includes:
two terminal pads that are carried by the enclosure and that can be connected from outside the enclosure to an electrical circuit to be isolated by the switch-disconnector,
two contact elements that are disposed in an arc distinguishing chamber delimited inside the enclosure and are respectively connected to the terminal pads, while being movable relative to one another into a closed position in which the contact elements are in direct contact with one another and an open position, in which the contact elements are separated from one another,
a mechanism that is arranged inside the enclosure, controlled from outside the enclosure and adapted to move the contact elements from the closed position to the open position, and
a non-electrical device according to claim 1 arranged in the arc extinguishing chamber in such a manner that one of the two terminal pads is received in the passage, extending substantially parallel to the axis.
12. The switch disconnector according to claim 11 , in which the first half-housing is directly intercalated along the axis between the enclosure and the second half-housing.