N2XSEYRY 18/30 kV; for installation in vertical drilling mines

Description
Cable for underground power distribution and subtransmission.

Description
Standards
International : IEC 60228; IEC 60332-1-2; IEC 60502-2; IEC 60811-401; IEC 60811-402; IEC 60811-409; IEC 60811-501; IEC 60811-502; IEC 60811-504; IEC 60811-505; IEC 60811-506; IEC 60811-507; IEC 60811-508; IEC 60811-509National : NTP-IEC 60228; NTP-IEC 60502-2; UL 2556
Description
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 and moisture. Adequate resitance to greases and oils. Flame retardant.
Cross section:
95 mm2.
Marking:
INDECO S.A. N2XSEYRY 18/30 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.
UL 2556: Wire and Cable Test Methods. Section 4.2.8.5: Carbon-Arc and Xenon-Arc Tests- Sunlight resistance.
Characteristics
Construction characteristics | |
---|---|
Conductor material | Soft copper |
Material of the inner semi-conductor | Extruded |
Insulating material | XLPE-TR |
Material of the external semi-conductor | Extruded strippable |
Individual screen | Copper tapes helically applied |
Armour type | Galvanized steel wires |
Outer sheath | PVC |
Sheath colour | Red |
Lead free | Yes |
Electrical characteristics | |
Rated Voltage Uo/U (Um) | 18/30 kV |
Dielectric strength core to screen DC, min. | 63.0kV |
Time of application Dielectric strength core to screen DC | 5min. |
Voltage for partial discharge test | 31.1kV |
Maximal partial discharge test | 10pC |
Impulse voltage | 170kV |
Mechanical characteristics | |
Mechanical resistance to impacts | Good |
Usage characteristics | |
U.V resistance | UL 2556 - Sunlight Resistance |
Flame retardant | IEC 60332-1-2; FT1 |
Oil resistance | Good |
Maximum operating temperature | 90°C |
Overload maximum core temperature | 130°C |
Short-circuit max. conductor temperature | 250°C |
Specific characteristics | |
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Products and services
Docs and info
Armor Conformation
Ref. Nexans |
Formation |
Armor |
|
Nb |
Wire diameter (mm) |
||
P00028117-1 |
3x95 |
52 |
3,15 |
Conditions for installation in vertical drilling mines
Ref. Nexans |
Formation |
Length (m) |
S.F |
P00028117-1 |
3x95 |
200 |
6 |
-
BENDING RADIUS INSTALLED IN M.V
R=Dxf
R: Bending radius when installed (mm)
D: Diameter over sheath (mm)
f: Multiplicative factor; given the following table:
-
Calculation of Current Condition Multi-core M.V.
CALCULATION OF CURRENT CONDITION BASED ON NTP-IEC 60502-2 Annex B
Maximum conductor temperature: 90°C.
Ambient air temperature: 30°C.
Ground temperature: 20°C.
Depth of laying: 0,8 m.
Thermal resistivity of soil: 1,5 K.m/W.