Separable electrical connector assembly
View Patent ↗A high voltage loadbreak bushing insert includes an insulative housing having a first end section, a second end section opposite the first end section, a mid-section disposed between the first and second end sections and a transition shoulder portion disposed between the second end section and the mid-section. The second end section is dimensioned for insertion into a power cable elbow connector and the mid-section is dimensioned to be sealed against an elbow cuff of the power cable elbow connector. The transition shoulder portion includes at least one raised portion protruding radially outwardly from the transition shoulder portion. The raised portion is adapted to force the elbow cuff of the power cable elbow connector to expand in a radially outward direction upon withdrawal of the second end section from the power cable elbow connector, thereby venting a cavity formed between the bushing insert and the power cable elbow connector.
1. A high voltage loadbreak bushing insert including an insulative housing having an axial bore therethrough and a conductive member disposed within said axial bore, wherein said insulative housing comprises:
a first end section being dimensioned to be seated in a bushing well,
a second end section opposite said first end section, said second end section being dimensioned for insertion into a power cable elbow connector; and
a mid-section disposed between said first and second end sections, said mid-section being radially larger than said first and second end sections and being dimensioned to be sealed against an elbow cuff of the power cable elbow connector; and
a transition shoulder portion disposed between said second end section and said mid-section, said transition shoulder portion including at least one raised venting portion protruding radially outwardly from said transition shoulder portion, said raised venting portion being adapted to force the elbow cuff of the power cable elbow connector to expand in a radially outward direction upon withdrawal of said second end section from said power cable elbow connector, thereby venting a cavity formed between said bushing insert and the power cable elbow connector.
2. A bushing insert as defined in claim 1 , wherein said transition shoulder portion includes a plurality of raised venting portions circumferentially spaced along said transition shoulder portion.
3. A bushing insert as defined in claim 1 , wherein said raised venting portion comprises a rib.
4. A bushing insert as defined in claim 1 , wherein said transition shoulder portion further comprises an inclined portion, said raised venting portion protruding radially outwardly from said inclined portion.
5. A bushing insert as defined in claim 1 , wherein said transition shoulder portion comprises an indicator band formed of a different colored material than the insulative housing.
6. A bushing insert as defined in claim 1 , wherein said transition shoulder portion comprises an interface shell molded from a low coefficient of friction plastic and having a sleeve portion provided on at least a portion of said second end section.
7. A bushing insert as defined in claim 1 , wherein said insert is rated between 15 kV and 25 kV.
8. A high voltage loadbreak bushing insert including an insulative housing having an axial bore therethrough and a conductive member disposed within said axial bore, wherein said insulative housing comprises:
a first end section being dimensioned to be seated in a bushing well,
a second end section opposite said first end section, said second end section being dimensioned for insertion into a power cable elbow connector; and
a mid-section disposed between said first and second end sections, said mid-section being radially larger than said first and second end sections and being dimensioned to be sealed against an elbow cuff of the power cable elbow connector; and
a transition shoulder portion disposed between said second end section and said mid-section, said transition shoulder portion including an inclined venting portion tapering radially inward from said mid-section toward said second end section said inclined venting portion being exposed to ambient air pressure upon withdrawal of said second end section from said power cable elbow connector, thereby venting a cavity formed between said bushing insert and the power cable elbow connector.
9. A bushing insert as defined in claim 8 , wherein said transition shoulder portion includes a plurality of inclined venting portions circumferentially spaced along said transition shoulder portion.
10. A bushing insert as defined in claim 8 , wherein said transition shoulder portion further comprises at least one raised portion protruding radially outwardly from said inclined venting portion.
11. A bushing insert as defined in claim 10 , wherein said raised portion comprises a rib.
12. A bushing insert as defined in claim 8 , wherein said transition shoulder portion comprises an indicator band formed of a different colored material than the insulative housing.
13. A bushing insert as defined in claim 8 , wherein said transition shoulder portion comprises an interface shell molded from a low coefficient of friction plastic and having a sleeve portion provided on at least a portion of said second end section.
14. A bushing insert as defined in claim 8 , wherein said insert is rated between 15 kV and 25 kV.