Connector sheath and cable connector assembly having same

1. A connector sheath adapted to be used in a cable connector assembly, comprising:

a T-shaped main insulation bushing,

an inner semi-conductive shield layer disposed in the T-shaped main insulation bushing and attached to the T-shaped main insulation bushing; and

an outer semi-conductive shield layer disposed on an outer surface of the T-shaped main insulation bushing and attached to the T-shaped main insulation bushing, wherein the T-shaped main insulation bushing is made of an elastic insulation material having a dielectric constant value in the range from about 5 to about 15 such that the connector sheath provides electrical stress control for 6 to 24 kV cables without a separate adapter, stress control layer, or geometric stress cone.

2. The connector sheath according to claim 1 , wherein the dielectric constant value of the elastic insulation material is in the range from about 5 to about 10.

3. The connector sheath according to claim 1 , wherein the T-shaped main insulation bushing is formed by injection molding or press molding.

4. The connector sheath according to claim 1 , wherein the T-shaped main insulation bushing is made of silicon rubber or ethylene propylene terpolymer.

5. The connector sheath according to claim 1 , further comprising a core reel adapted to internally support and expand an end of the cable connecting chamber of the connector sheath for facilitating the insertion of a cable, wherein the core reel is adapted to be withdrawn from the cable connecting chamber of the connector sheath after the connection of the cable.

6. A cable connector assembly adapted to connect a cable bonded to an end of a cable lug to an external electrical apparatus, comprising a connector sheath according to claim 1 , wherein the connector sheath is a T-shaped bushing comprising:

an electrical apparatus connecting chamber disposed at a first end of the T-shaped bushing, wherein the electrical apparatus connecting chamber is adapted to accommodate an external electrical apparatus connection part;

a cable lug chamber and a cable connecting chamber successively disposed at a second end of the T-shaped bushing, the cable lug chamber adapted to accommodate the cable lug, the cable connecting chamber adapted to accommodate a cable; and

a connecting assembly for electrically connecting the opposite end of the cable lug to the external electrical apparatus connection part.

7. The cable connector assembly according to claim 6 , further comprising:

an insulation plug chamber disposed at a third end of the T-shaped bushing opposite to the first end; and

an insulation plug adapted to be accommodated in the insulation plug chamber.

8. The cable connector assembly according to claim 6 , wherein the connecting assembly comprises:

a connecting bolt passing through the opposite end of the cable lug, wherein one end of the connecting bolt is screwed to the external electrical apparatus connecting part; and

a connecting nut for fastening the cable lug to the external electrical apparatus connecting part.

9. The cable connector assembly according to claim 8 further comprising:

a first embedded member embedded into a first end of the insulation plug and screwed to the opposite end of the connecting bolt; and

a second embedded member embedded into a second end opposite to the first end of the insulation plug.

10. The cable connector assembly according to claim 9 , further comprising:

a semi-conductive shield tail plug fitted in the second imbedded member and connecting the second embedded member to the outer semi-conductive shield layer of the T-shaped connector sheath.