We Claim:
1 A cable module for a high voltage gas-insulated device with a detachable electric connection, comprising:
an enclosure (1) provided with a first opening (11) and a second opening (12);
an insulator (2) provided with a conductive insert (21) and fixed to a first flange (13) of the enclosure (1) around the first opening (11);
a cable terminal connector (4) passing through a wall of the enclosure (1) and comprising a first end (41) positioned inside the enclosure (1) and a second end (42) positioned outside the enclosure (1) and configured to be connected to an external cable;
a plurality of conductors, comprising a first conductor (31) electrically connected to the conductive insert (21), a second conductor (32) electrically connected to the first end (41) of the cable terminal connector (4), and a third conductor (33) detachably and electrically connecting the first conductor (31) to the second conductor (32); and
a fourth conductor (34) fixedly connected to the first end (41) of the cable terminal connector (4); wherein
the third conductor (33) is configured to be movable relative to the enclosure (1) substantially along a central axis (A2) of the second opening (12) to be fixedly connected to or separated from the first conductor (31), and
the second conductor (32) is configured to be movable relative to the fourth conductor (34) along a direction perpendicular to the central axis (A2) of the second opening (12) and is electrically connected to the fourth conductor (34) through a second electrical contact (62) embedded in the fourth conductor (34).
2. The cable module according to the previous claim, wherein the third conductor (33) is detachably connected to the first conductor (31) through a bolt (5), and wherein a central axis of the bolt coincides with the central axis (A2) of the second opening (12).
3. The cable module according to the previous claim 1, wherein the third conductor (33) is configured to be movable relative to the second conductor (32) along the central axis (A2) of the second opening (12) and is electrically connected to the second conductor (32) through a first electrical contact (61) embedded in the second conductor (32)
4. The cable module according to the previous claim, wherein the second conductor (32) is provided with a passage (32a) penetrating through the entire second conductor (32) along the
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central axis (A2) of the second opening (12), and wherein the third conductor (33) is configured to be movable in the passage (32a) in which the first electrical contact (61) is embedded.
5. The cable module according to any one of the previous claims, wherein a central axis (Al) of the first opening (11) is perpendicular to the central axis (A2) of the second opening (12).
6. The cable module according to any one of the first four claims, wherein the outer contour of the first conductor (31) does not exceed an area delimited by the contour of the first opening (11) on a cross section perpendicular to the central axis (Al) of the first opening (11).
7. The cable module according to any one of the first four claims, wherein the cable module further comprises a first cover (7) integrated with a high-voltage detection sensor and fixed to a second flange (14) of the enclosure (1) around the second opening (12).
8. The cable module according to any one of claims 1-5, wherein the enclosure (1) is further provided with a third opening (15), and wherein the cable module further comprises a second cover (8) integrated with an explosion-proof membrane and fixed to a third flange (16) of the enclosure (1) around the third opening (15).
9. A high voltage gas-insulated device comprising the cable module with a detachable electric connection according to any one of the previous claims.
10. A method for manufacturing a cable module for a high voltage gas-insulated device with a detachable electric connection, comprising:
providing an enclosure (1) having a first opening (11) and a second opening (12);
providing an insulator (2) having a conductive insert (21);
providing a first conductor (31) electrically connected to the conductive insert (21), and fixing the assembly of the insulator (2) with the first conductor (31) to a first flange (13) of the enclosure (1) around the first opening (11);
providing a cable terminal connector (4) having a first end (41) and a second end (42);
providing a second conductor (32) electrically connected to the first end (41) of the cable terminal connector (4), and passing the assembly of the cable terminal connector (4) with the second conductor (32) through a wall of the enclosure (1) such that the first end (41) is
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positioned inside the enclosure (1) and the second end (42) is positioned outside the enclosure (1) to be connected to an external cable;
providing a third conductor (33) detachably and electrically connecting the first conductor (31) to the second conductor (32), wherein the third conductor (33) is configured to be movable relative to the enclosure (1) substantially along a central axis (A2) of the second opening (12) to be fixedly connected to or separated from the first conductor (31), and
providing a fourth conductor (34) fixedly connected to the first end (41) of the cable terminal connector (4), and wherein the second conductor (32) is configured to be movable relative to the fourth conductor (34) along a direction perpendicular to the central axis (A2) of the second opening (12) and is electrically connected to the fourth conductor (34) through a second electrical contact (62) embedded in the fourth conductor (34).