Couplings for single-core plastic insulated cables for voltage 10 kV. (1x630) (Казахстан - Тендер #40688560)

Supplier Types: Assessed Supplier, Trade Assurance, Couplings for single-core cables with plastic insulation for a voltage of 10 kV. (1x630) 1. For
for single-core cables with plastic insulation and an aluminum wire screen, heat-shrinkable technology couplings must be used. The range of application for the cross section of the conductors is 630 mm2. 2. Connection of cable cores should be carried out by mechanical connectors with 4 shear heads of universal use for aluminum and copper, round and sector, seamless and stranded conductors. In the connection area, the electrical integrity of the cable structure and its mechanical strength must be guaranteed. The connection area should be wrapped with a mastic plate to equalize the field strength. 3. Equalization of the electric field strength at the point of cutting the semi-conductive screen is carried out using a yellow void filling tape and heat-shrinkable tubes. 4. Restoration of the insulation and shielding of the connection area must be carried out using a three-layer heat-shrinkable elastomer tube. Any mechanical
delaminations or air inclusions between two layers
pipes before and after its installation are not allowed. 5. The coupling must have an additional kit for aluminum and copper screen with 6 mechanical connectors 25/70 without
partitions, a grounding leash of at least 1 meter D 35 mm., a thread for cutting insulation. It is not allowed to reduce the cross section of the cable screen by cutting out its wires or adding additional conductors by soldering. 5. The coupling must have a copper mesh shield, which, together with the wires of the shields of the two cables to be connected, connected to each other without soldering and connector, must be sufficient to pass, in the event of a ground fault, an electric current of 200 A for 24 hours. It is not allowed to reduce the cross section of the cable screen by cutting out its wires or adding
additional conductors by soldering. 6.To achieve
complete sealing of the cable connection, external
the insulating tube on the inside must be covered
hot melt adhesive. This tube must have sufficient
mechanical strength to withstand external
mechanical loads; sufficient electrical strength,
required for testing the outer sheath of the cable (Umin=5
kV, t=5min), as well as chemical resistance
environment and ultraviolet radiation. 7.Length
mounted coupling 700 mm, D=85 mm.

Country: Kazakhstan

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