A high voltage connector, such as one that carries current at a voltage of at least one kilovolts, is constructed to minimize partial discharge (a small amount of current flow) out of locations where a cable conductor has been crimped to the rear of a contact, which resulted in sharp points or edges
A high voltage connector, such as one that carries current at a voltage of at least one kilovolts, is constructed to minimize partial discharge (a small amount of current flow) out of locations where a cable conductor has been crimped to the rear of a contact, which resulted in sharp points or edges. A shroud is mounted around the connector, which includes a cylindrical shroud sleeve lying around the crimped region of the contact, with the rear end of the shroud sleeve having rounded edges or abutting a rear shroud element, and with the front end of the shroud preferably being of hemispheric shape.
대표청구항▼
1. A high voltage connector which includes a contact that has a contact axis, a contact rear end, and a forward projecting front mating end, said connector including a cable that has an inner cable conductor connected to said contact rear end, and said connector having a conductive shell that extend
1. A high voltage connector which includes a contact that has a contact axis, a contact rear end, and a forward projecting front mating end, said connector including a cable that has an inner cable conductor connected to said contact rear end, and said connector having a conductive shell that extends around said contact, wherein said contact has a crimp part (32) that is crimped around said axis to said inner cable conductor rear end, comprising: a first shroud (50) that is mounted on said contact, said first shroud having a tubular rear portion (52) that extends about said axis and about said crimp part of said contact, said first shroud having a front end (53) in the form of a hemisphere with a hole (62) therein through which said contact front mating end projects. 2. The connector described in claim 1 wherein: said first shroud tubular rear portion has a predetermined wall thickness (C), and said tubular rear portion has a rear end (60) with a radius of curvature (D) equal to half said wall thickness. 3. The connector described in claim 1 including: a rear second shroud element (70) that has a cylindrical outer surface (72) with a front end (72) that abuts said first shroud tubular rear end and that has a hemispherical rear end (74). 4. The connector described in claim 1 including: isolation means (68) that abuts said front end of said shroud;a screw (42) that extends along said contact axis and that engages said crimp part (32) of said contact;said first shroud has a front end with an abutting internal surface (66) that lies forward of said crimp part, and said crimped part has a circular front end (64), so as said screw is tightened it draws said front end of said crimped part against said abutting internal surface to assure good contact between them. 5. The connector described in claim 4 wherein: said first shroud abutting surface is a tapered internal surface (76) that lies forward of said crimped part to be of progressively smaller diameter at progressively more forward locations therealong. 6. A high voltage connector which includes a metal shell (14), an insulator (20) that lies in the shell and that has at least one through passage (32) that extends along a passage axis (24), and a contact (12) that lies in said passage and that has a crimp rear end part (32) that is crimped (36) around a cable high voltage inner conductor (30), and that has a crimp front end portion (40) that projects forward of said rear end part and that is designed to mate with another contact, including: a conductive shroud (50) that has a tubular rear portion (52) that is centered on said passage axis and that extends around said crimp rear end part (32), said shroud having a front portion (53) of predetermined diameter (A) about said passage axis and that is curved about at least one axes that is angled to said passage axis, with a radius of curvature (A/2, B) about each of said axes being at least 10% of said predetermined diameter. 7. The connector described in claim 6, wherein: said front portion (53) of said shroud has an outside in the shape of a hemisphere and has an internal surface (66, 76); and has a shroud hole (62) lying on said axis; and includinga screw (42) that extends along said passage axis through said shroud hole and that is threadably connected to said crimp part (32) of said contact, so when said screw is tightened it draws said crimp part of said contact against said internal surface of said front portion of said shroud. 8. The connector described in claim 6 including: a shroud element (70) that has a cylindrical front portion (72) of the same diameter as said shroud tubular rear portion and that abuts a rear end (60) of said shroud tubular rear portion, said shroud element having a rear end (74) that is curved about at least one axis that is angled from said passage axis, about a radius of curvature that is at least 10% of said predetermined diameter.
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