NA2XS2Y 18/30 kV 240 mm2 PH16

Description

Description

Standards

  • Product
    ICEA S-93-639; IEC 60228; IEC 60502-2; NTP-IEC 60228; NTP-IEC 60502-2
  • Test
    IEC 60684-2; IEC 60754-1; IEC 60754-2; IEC 61034-2; UL 2556

Application

Power distribution in medium voltage. As transformer feeders in substations. In power plants, industrial and operation installations, in residential areas and mining installations, in dry or wet locations.

Construction

1. Conductor: Compact stranded aluminium 1350, 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 wires + copper tape in open spiral.

6. Tape: Polyester tape.

7. Outer sheath: High Density Polyethylene HDPE-UV.

Main characteristics

Excellent properties against heat aging. Resistance to abrasion, moisture and sunlight. Adequate resistance to greases and oils. Flame retardant. Low emission dense smoke and halogen free.

Cross section:

From 240 mm2 up to 630 mm2.

Marking:

INDECO S.A. NA2XS2Y 18/30 kV - Section - PH(Screen section) - Year - Sequential length.

Packing:

Non returnable wooden reels.

Colour:

Insulation: Natural.

Outer sheath: Red-UV.

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.

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

IEC 60684-2: Flexible insulating sleeving - Part 2: Methods of test.

IEC 60754-1: Test on gases evolved during combustion of materials from cables - Part 1: Determination of the halogen acid gas content.

IEC 60754-2: Test on gases evolved during combustion of materials from cables - Part 2: Determination of acidity (by pH measurement) and conductivity.

IEC 61034-2: Measurement of smoke density of cables burning under defined conditions.

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.

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:

 

Bending radius factor MV

Calculation of Current Condition Single-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.
Screens bonded at both ends.

In the case of different conditions, the correction factors indicated by this standard must be applied.

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Conductor material
Aluminum Alloy 1350
Material of the inner semi-conductor
Extruded
Insulating material
XLPE-TR
Material of the external semi-conductor
Extruded strippable
Screen
Copper wire + copper tape
Outer sheath
HDPE-UV
Sheath colour
Red - UV
Halogen free
IEC 60754-1

Dimensional characteristics

Dimensional characteristics

Conductor cross-section
240 mm²
Screen section
16 mm²
Conductor diameter
18.0 mm
Diameter over insulation
33.7 mm
Diameter over screen
37.0 mm
Diameter over Sheath
40.8 mm
Approximate weight
1691 kg/km
Total number of wires
37

Electrical characteristics

Electrical characteristics

Max. DC resistance of the conductor at 20°C
0.125 Ohm/km
Rated Voltage Uo/U (Um)
18/30 kV
A.C. Conductor resist. at 90 °C - flat formation
0.1616 Ohm/km
Dielectric strength core to screen DC, min.
63.0 kV
Nominal capacitance
245.0 pF/m
Perm. current rating buried 20°C - flat formation
373 A
Perm. current rating in air 30°C - flat formation
593 A
Permissible short circuit current screen 0.5s
2.8 kA
Phase reactance 60 Hz - flat formation
0.2025 Ohm/km
Resistance of the screen
1.15 Ohm/km
A.C. Conductor resist. at 90 °C - trefoil formation
0.1616 Ohm/km
Time of application Dielectric strength core to screen DC
5 min.
Voltage for partial discharge test
31.1 kV
Maximal partial discharge test
10 pC
Impulse voltage
170 kV
Phase reactance 60 Hz - trefoil formation
0.1328 Ohm/km
Perm. current rating buried 20°C - trefoil formation
367 A
Perm. current rating in air 30°C - trefoil formation
502 A

Mechanical characteristics

Mechanical characteristics

Cable flexibility
Class 2 IEC 60228

Usage characteristics

Usage characteristics

U.V resistance
UL 2556 - Sunlight Resistance
Oil resistance
ICEA S-93-639
Gases corrosivity
Low pH Corrosivity IEC 60754-2
Smoke density
IEC 61034-2
Maximum operating temperature
90 °C
Overload maximum core temperature
130 °C
Short-circuit max. conductor temperature
250 °C

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