ET 400 mm² 35kV 100%IL

Description

Description

Standards

  • Product
    ASTM B 3; ASTM B 496; ASTM B 8; ICEA S-93-639; IEC 60228; IEC 60502-2
  • Test
    IEC 60332-1-2

Applications

Power shielded cable for fixed installations, used for connection of transformers, switchgears, GIS substations, motors, generators, feeders in distribution networks. Suitable to be installed directly buried, buried in ducts, in conduits or in free air.

Construction: Singlecore cable.

Conductor: Compact-round stranded copper conductor. For AWG and kcmil sizes: class B according to ASTM B-3, ASTM B8 and ASTM B-496 according to requirements of ICEA S-93-639. For standard mm² sizes: class 2 according to IEC 60228.

Conductor shield: Extruded semiconducting material.

Insulation: Ethylene propylene rubber (EPR) with excellent electrical properties, good resistance to ozone and chemical agents.

Insulation shield: Extruded semiconducting material.

Metallic shield: Copper tape applied helically in intimate contact with the underlaying semiconducting layer. 12% mimimum overlap.

Oversheath: Polyvinyl Chloride (PVC), flame retardant, resistant to weather and UV radiation. Color upon request.

 

Marking: NEXANS CHILE ET "size" "Rated voltage" Cu EPR "Nominal Insulation Thickness" (1) 90°C  "Manuf. order" "Date"

(1) Nominal Insulation Thickness information on marking only applies for cables according to ICEA S-93-639.

Design Alternatives

ET-TC: Fire retardant according to IEC 60332-3-24 Cat. C.

ET-RAT: Resistant to rodent attack.

 

HFFR alternative:

FREETOX-E Medium Voltage

 

INSTALLATION CONDITIONS FOR CURRENT CARRYING CAPACITIES_MV CABLES

(1) Current carrying capacities based on ICEA P-46-426, for installations were ducts and cables are not directly exposed to solar radiation.

De-rating factors must be applied according to specific installation conditions.

INSTALLATION CONDITIONS FOR CURRENT CARRYING CAPACITIES_MV CABLES

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Conductor material
Copper
Insulation
EPR
Outer sheath
PVC
Conductor flexibility
Class 2
Conductor shape
Circular

Dimensional characteristics

Dimensional characteristics

Conductor cross-section (AWG/KCMIL)
-
Conductor cross-section
- kcmil
Conductor cross-section
400 mm²
Total number of wires
61
Phase Conductor Diameter
23.47 mm
Nominal insulation thickness
8.76 mm
Minimum insulation thickness
8.38 mm
Diameter over insulation
43.0 mm
Screen section
10.3 mm²
Minimum outer sheath thickness
2.54 mm
Approximate weight
5500 kg/km
Nominal outer diameter
50.0 mm
Number of cores
1
Phase Conductor Cross Section
400 mm²

Electrical characteristics

Electrical characteristics

Operating voltage
35 kV
Insulation Level
100 %
Maximum operating voltage
36.7 kV
Max. DC resistance of the conductor at 20°C
0.047 Ohm/km
A.C. Conductor resist. 50Hz and at 90 °C
0.0615 Ohm/km
Inductive reactance at 50Hz and 90°C flat spaced
0.165 Ohm/km
Perm current rating in air 40°C
897 A
Permissible current rating buried 20°C
815 A
Perm. Current in duct 20°C
704 A
Voltage Drop
0.26 V/A.km
Permissible short circuit current
179.6 kA

Mechanical characteristics

Mechanical characteristics

Maximum pulling tension with pulling eyes
2270 kgf
Maximum pulling tension with pulling grips
265 kgf

Usage characteristics

Usage characteristics

Laying operation bending radius
700 mm
Minimum Bend Radius - Installed
600 mm
Max. conductor temperature in service
90 °C
Overload maximum core temperature
130 °C
Short-circuit max. conductor temperature
250 °C
Minimum installation temperature
-10 °C
Flame retardant
EN 60332-1-2
Oil resistance
ICEA S-93-639 (70°C/4h)
U.V resistance
UL 1581

Resources

Resources

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