Published On: Mon, Sep 13th, 2021

BRANCHED “T” CABLE CONNECTORS

BRANCHED “T” CABLE CONNECTORS

Text: Radoje Janković,

Production and photos: Tony Schlesinger.

These cable connectors are intended for connecting and branching or separating the branch from the main power line of single-core, three-core, four-core power cables. They are made in a high degree of protection for cable cross-sections up to 500 mm² and, if necessary, for larger cable cross-sections.

The assembly of these couplings is performed by means of T – constructions at an angle of 900 connecting elements, which as a rule come in the coupling set.

This type of cable connector is manufactured for low voltage and high voltage cables. They are usually for single-core and three-core cables, less often for two-core, four-core or five-core cables.

They are made of metal – from cast iron or alloy.

It should be emphasized that with each cable connector, the manufacturer delivers detailed, step-by-step technical instructions for making it in the field. The electrician must strictly follow the manufacturer’s Technical Instructions.

Making a T-joint for large cross-section cables, step by step.

When making a “T” cable joint for large cross-section cables, a lot can go wrong, say experienced installers.

The most important thing is to focus on the strongest, precision, expertise and patience are key in these jobs. Of course, good training and strict adherence to the Technical Instructions of the T-joint manufacturer. In this case, it all fit together and the job was done great. “T” connection of a single-core fine-wire cable with a cross-section of 500 mm2.


Fig. 1. Inside the cable joint there is a copper flat terminal with 3 screws… Appearance of the preparation of the main single-core cable with lug, left and right without cable lug…
Sl. 1. Unutra spojnice nalazi bakarna pljosnata stezaljka sa 3 zavtrnja… Izgled pripreme glavnog jednožilnog kabla levo sa stopicom i desno bez stopice…
Fig. 2. Appearance of the preparation of the end of the main cable fixed to the rail terminal left and right ready for fixing…
Sl. 2. … Izgled pripreme kraja glavnog kabla fiksiranog na šinsku stezaljku levo i desno spremnog za fiksiranje… 
Fig. 3.… Both ends of the cable are equipped with cable lugs  and insulation with a heat-shrinkable insulating tube.
Sl. 3.  … Oba kraja kabla opremljena stopicama i izolovanje termoskupljajućom izolacionom cevčicom
Fig.4. … Appearance of the prepared protective cable shield made of copper wires with two bridging conductors…
Sl. 4. … Izgled pripremljenog zaštitnog širma kabla koji je izrađen od bakarnih žica sa dva provodnika za premošćenje …

Fig.5. Preparation of single core cable of the same cross section for branching from the main cable…

Sl. 5. Priprema jednožilnog kaba istog preseka za račvanje sa glavnog kabla…

Fig. 6. Crimp the cable lug attached to the cable core.
Sl. 6. Presovanje kablovske stopice navučene na kablovsku žilu.

Fig. 7. Insulation of the cable lug with a heat-shrinkable insulating tube…
Sl. 7. Izolovanje kablovske stopice termoskupljajućom izolacionom cevčicom…

Fig. 8. Place the metal ring around the cable shield
Sl. 8. Stavljanje metalnog prstena oko širma kabla.

Fig. 9. Cable finishing…
Sl. 9. Finalna obrada kabla…

Fig. 10. Check and install the cover on the cable T-joint.
Sl. 10. Provera i postavljanje poklopca na spojnicu.
Fig. 11. Close the T-cable connector. The opening on the upper side is used for pouring the insulating mass into the cable connector.
Sl. 11. Zatvaranje T-kablovske spojnice. Otvor na gornjoj strani služi za nalivanje izolacione mase u kablovsku spojnicu.

Fig. 12. Preparation of two-component insulation mass for coupling…

Sl. 12. Priprema dvokomponentne zalivne mase za spojnicu…

Fig. 13. Preparation of insulation mass  for cable joint…
 
Sl. 13. Priprema zalivne mase za spojnicu…

Sl. 14. Nalivanje zalivne mase u spojnicu…
Fig. 14. Pouring the insulation mass into the cable joint

Sl. 15. Nalivanje zalivne mase u T-kablovsku spojnicu.
Fig. 15. Pouring the insulation into the T-cable joint.

Fig. 16. Poured insulation mass in the cable joint. Closing the cover and making the T-cable connector is complete. Just testing and burying the cable trench. In the end, it remains to put the cable under voltage.
Sl. 16. Nalivena zalivna masa u spojnici. Zatvaranje poklopca i izrada T-kablovske spojnice je završena.  Još samo ispitivanje i zatrpavanje kablovskog rova. Na kraju ostaje stavljanje kabla pod napon. 

Note:

No reference. Work is original.

About the Author

- Radoje - Rade Jankovic Electrician, Electrical Technician, Electrical Engineer, PhD, Ecologist, Environmentalist, Designer, Educator, Investigator... Today PROFESSIONAL TECHNICAL WRITER AND DOCUMENTATOR Massive practical experience in almost all fields of electrical engineering over 40 years. My International education group in Facebook: EEEW - ELECTRICAL & ELECTRONIC EDUCATION WORLD where published more than 8000 small or bigger articles, lessons, technical advice, projects, technical calculations, test questions with and without answers, illustrated test questions with and without answers; all my original works and few thousands of may original photos from practice, drawings, circuit diagrams, environmental lessons and examples from everyday practice etc., etc.

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BRANCHED “T” CABLE CONNECTORS