NA2XSY 20/35 kV 300 mm2 PH16

Description

Description

Standards

  • Product
    ABNT NBR 6251 ; ABNT NBR 7287 ; ICEA S-93-639; IEC 60228; NTP-IEC 60228
  • Test
    IEC 60332-1-2; 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 60811-509; UL 2556

Application

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

Construction

1. Conductor: Compact round 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 helix.

6. Tape: Polyester tape.

7. Outer sheath: Compound polyvinyl chloride PVC with antirodent compound.

Main characteristics

Excellent properties against heat aging. Resistance to abrasion, moisture and sunlight. Adequate resistance to greases and oils. Flame retardant. Resistance to attack by rodents.

Cross section:

From 240 mm2 up to 630 mm2.

Marking:

INDECO S.A. NA2XSY 20/35 kV - Cross section - PH(Screen section) - Year - Sequential length.

Packing:

Non returnable wooden reels.

Colour:

Insulation: Natural.

Outer sheath: Black.

National standards

NTP-IEC 60228: Conductors of insulated cables.

International standards

IEC 60228: Conductors of insulated cables.

ABNT NBR 6251: Insulated power cables, for rated voltages 1 kV up to 35 kV - Constructive requirements.

ABNT NBR 7287: Power cables extruded cross-linked polyethylene insulated power cable for rated voltages from 1 up to 35 kV - Performace requirements.

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.

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 Medium Voltage

CALCULATION OF CURRENT CONDITION BASED ON ABNT NBR 14039

Maximum conductor temperature: 90°C.
Ambient air temperature: 30°C.
Ground temperature: 20°C.
Depth of laying: 0,9 m.
Thermal resistivity of soil: 1,5 K.m/W.

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
PVC
Sheath colour
Black - UV
Lead free
Yes

Dimensional characteristics

Dimensional characteristics

Conductor cross-section
300 mm²
Screen section
16 mm²
Total number of wires
37
Conductor diameter
20.4 mm
Diameter over insulation
39.5 mm
Diameter over screen
42.8 mm
Diameter over Sheath
48 mm
Approximate weight
2385 kg/km

Electrical characteristics

Electrical characteristics

Max. DC resistance of the conductor at 20°C
0.1 Ohm/km
Rated Voltage Uo/U (Um)
20/35 kV
A.C. Conductor resist. at 90 °C - flat formation
0.1292 Ohm/km
Dielectric strength core to screen DC, min.
76.0 kV
Nominal capacitance
227.0 pF/m
Permissible short circuit current screen 0.5s
2.9 kA
Resistance of the screen
1.15 Ohm/km
A.C. Conductor resist. at 90 °C - trefoil formation
0.1298 Ohm/km
Time of application Dielectric strength core to screen DC
15 min.
Voltage for partial discharge test
38.0 kV
Maximal partial discharge test
3 pC
Phase reactance 60 Hz - flat formation
0.2053 Ohm/km
Impulse voltage
200 kV
Phase reactance 60 Hz - trefoil formation
0.1356 Ohm/km
Perm. current rating buried 20°C - flat formation
436 A
Perm. current rating buried 20°C - trefoil formation
393 A
Perm. current rating in air 30°C - flat formation
630 A
Perm. current rating in air 30°C - trefoil formation
541 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
Flame retardant
IEC 60332-1-2; FT1
Rodent protection
ARS (Anti rodent sheath)
Maximum operating temperature
90 °C
Overload maximum core temperature
130 °C
Short-circuit max. conductor temperature
250 °C

Resources

Resources

Selling & delivery Information

Marking:
INDECO S.A. NA2XSY 20/35 kV - Cross section - PH(Screen section) - Year - Sequential length.

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