N2XSEYRY 12/20 kV; for installation in vertical drilling mines

Application:

Underground power distribution and subtransmission. As transformer feeders in substations. In power plants, industrial and operation installations, in residential areas and mining installations, in dry or wet locations, where mechanical strength is required, for instalation in vertical drilling mines.

Construction:

1. Conductor: Compact stranded soft copper, class 2.

2. Inner semi-conductor: Extruded.

3. Insulation: Cross linked polyethylene XLPE-TR (Tree retardant).

4. External semi-conductor: Extruded strippable.

These last three components extruded CV (continuous vulcanization) triple extrusion in Dry cure process.

5. Screen: Copper tapes.

6. Separation sheath: Compound polyvinyl chloride PVC.

7. Armour: Galvanized steel wires.

8. Tape: Polyester tape.

9. Outer sheath: Compound polyvinyl chloride PVC.

Main characteristics:

Excellent properties against heat aging. Its armour provides additional mechanical protection. Resistance to abrasion, moisture and sunlight. Adequate resitance to greases and oils. Flame retardant.

Cross section:

From 50 mm² up to 120 mm².

Marking:

INDECO S.A. N2XSEYRY 12/20 kV - Nb. Cores x Section - Year - Sequential length.

Packing:

Non returnable wooden reels.

Colour:

Insulation: Natural (Core identification with binder tapes: white, black, red).

Outer sheath: Red.

National standards

NTP-IEC 60228: Conductors of insulated cables.

NTP-IEC 60502-2: Power cables with extruded insulation and their accessories for rated voltages from 6 kV up to 30 kV.

International standards

IEC 60228: Conductors of insulated cables.

IEC 60502-2: Power cables with extruded insulation and their accessories for rated voltages from 6 kV up to 30 kV.

IEC 60332-1-2: Test for vertical flame propagation for a single insulated wire or cable - Procedure for 1 kW pre-mixed flame.

UL 2556: Wire and Cable Test Methods. Section 9.3: FT1 (Vertical-Specimen) Flame Test.

IEC 60811-401: Thermal ageing methods. Ageing in an air oven.

IEC 60811-402: Water absorption tests.

IEC 60811-409: Loss of mass test for thermoplastic insulations and sheaths.

IEC 60811-501: Test for determining the mechanical properties.

IEC 60811-502: Shrinkage test for insulations.

IEC 60811-504: Bending test at low temperature for insulation and sheaths.

IEC 60811-505: Elongation at low temperature for insulations and sheaths.

IEC 60811-506: Impact test at low temperature for insulations and sheaths.

IEC 60811-507: Hot set test for cross-linked materials.

IEC 60811-508: Pressure test at high temperature for insulation and sheaths.

IEC 60811-509: Test for resistance of insulations and sheaths to cracking.

ICEA S-93-639: 5-46 kV Shielded Power Cable for Use in the Transmission and Distribution of Electric Energy. Section 9.4.2: Oil Immersion Test.

UL 2556: Wire and Cable Test Methods. Section 4.2.8.5: Carbon-Arc and Xenon-Arc Tests- Sunlight resistance.