Medium Voltage Aerial Bundle Cable

Medium voltage overhead insulated cables are mainly used in medium voltage distribution lines of urban power grids to transport electrical energy from substations to individual distribution transformers. High-performance insulation materials, such as cross-linked polyethylene (XLPE), which have good electrical properties and thermal stability and can withstand high electric field strengths, are generally used. As MV cables usually cover large distances, they can be subjected to higher voltages and mechanical stresses, such as those caused by wind, ice cover and other natural factors. Therefore, cables require high mechanical strength, including tensile strength and flexural strength. The conductors of cables are generally made of high-strength copper or aluminium strands, and the manufacturing process ensures that the cables are tightly constructed to improve their overall mechanical properties.

STANDARD TAXNOMY

Cables are offered accords with GB/T 14049-2008.

CONSTRUCTION

Conductor: Optional of copper wire, aluminum wire, aluminum alloy, and aluminum conductor steel reinforced
Number of Cores: 1, 3, 3+k (A), 3+k (B)
Nominal Cross Sectional Area/mm2: 10-400
Note: k is the neural conductor with bearing. (A) refers to steel bearing wire core, and (B) refers to aluminum alloy bearing wire core. The cross section can be chosen for pairing up with the major core according to the requirements of the power distributing project.
Conductor screen: Extruded semiconducting layer
Insulation: Optional of Polyethylene(PE), Cross-Linked Polyethylene(XLPE) and Polyvinyl Chloride(PVC)

APPLICATION

The products applies to the aerial electricity transmission and distribution line in the tall buildings, tourist attraction and forest zone.
The distance between the cable and trees should be taken into account, when the cable is laid in the aerial. It is permissible that the cable contact with trees.

CHARACTERISTICS

Max. continuous temperature in operation:
PVC or PE insulated aerial cable: 70℃
HDPE insulated aerial cable: 75℃
XLPE insulated aerial cable: 90℃
Max. short-circuit temperature of the conductor (maximum duration: 5 seconds):
PVC insulated aerial cable: 160℃
PE insulated aerial cable: 130℃
HDPE insulated aerial cable: 150℃
XLPE insulated aerial cable: 250℃
Min. installation ambient temperature: -20℃.
Permissible bending radius of cable:
For single core cable: No less than 20(D+d)
For multiple cores cable: No less than 15(D+d)

(Note: D-outer diameter of cable, d-outer diameter of conductor)

Parameter of some products

Type: CU/PE, AL/PE 6/10kV

No. of cores×nominal cross section (mm2)	Insulator thickness (mm)	Outer diameter (mm)	Maximum DC resistance of conductor at 20℃ (Ω/km)
No. of cores×nominal cross section (mm2)	Insulator thickness (mm)	Outer diameter (mm)	Copper	Aluminum
1×10	3.4	12	1.83	3.08
1×16	3.4	13	1.15	1.91
1×25	3.4	14	0.727	1.2
1×35	3.4	15	0.524	0.868
1×50	3.4	16	0.387	0.641
1×70	3.4	18	0.268	0.443
1×95	3.4	20	0.193	0.32
1×120	3.4	21	0.153	0.253
1×150	3.4	23	0.124	0.206
1×185	3.4	24	0.0991	0.164
1×240	3.4	27	0.0754	0.125
1×300	3.4	29	0.0601	0.1
1×400	3.4	32	0.047	0.0778

Note: The above is only part of the product specifications and technical parameters, if you need detailed parameters, please contact our sales manager.

ENEL Project (Contractor: ENEL Distribucion PERU S.A.A)