Terminating Triplex Cables Into Cable Boxes - Central Networks

New high voltage switchgear designs necessitate a revised method of terminating triplex cables into cable end boxes. Traditional gland plates have been substituted for one that permits the triplex single cores to be taken into the cable box straight and then through a plate that is split (to avoid acting as a CT and overheating) - this new cable glanding arrangement for high voltage triplex cables uses 3 plastic A2 stuffing glands in the base plate. 

Jointers note - Before installing the triplex cable jointers should untwist the triplex cable for 1.5 to 2 metres outside the cable box - ensure that the cable glands and locking rings are fitted over the cable before making off the triplex cable termination. The cable glands do not fit over the cable lugs. This revised method of bringing HV cables into cable boxes increases the separation between the triplex cores. 

Triplex Cables 11kV - Bonding & Earthing 
It is essential high voltage Triplex copper earth screen wires are bonded together and connected to the substation HV earth - copper wires of each single core should be gathered together into a single brass shear bolt lug or crimp lug. Most cable gland plates incorporate a parking bar suitable for bolting the three cable lugs onto - a further connection is required from this parking bar to the substation HV earth.

Adobe 3M Cold Shrink Terminations & Cable Joints - 3M Selection Guide (HV)

Adobe Terminating Triplex Cables Into Cable Boxes - Central Networks

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Terminating Triplex Cables Into Cable Boxes - Central Networks