ET-TC-105 250 kcmil 25kV 133%IL 5M25

Description

Description

Standards

  • Product
    ASTM B 3; ASTM B 496; ASTM B 8; ICEA S-93-639; IEC 60228; UL 1072
  • Test
    IEC 60332-1-2; IEC 60332-3-24 Cat.C

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, in tray cables 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. Maximum operating temperature 105°C.

Insulation shield: Extruded semiconducting material.

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

Oversheath: Polyvinyl Chloride (PVC), flame retardant and fire retardant according to IEC 60332-3-24 Cat. C.  Resistant to weather and UV radiation. Color upon request.

Marking: NEXANS CHILE ET-TC-105 "size" "Rated voltage" Cu EPR  Nominal Insulation Thickness  105°C "Manuf. order" "Date"

INSTALLATION CONDITIONS FOR CURRENT CARRYING CAPACITIES_MV CABLES

(1) Current carrying capacities based on NEC/NFPA 70, for installations were ducts and cables are not directly exposed to solar radiation.

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

INSTALLATION CONDITIONS FOR CURRENT CARRYING CAPACITIES_MV CABLES

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Conductor material
Copper
Insulation
EPR
Screen
Copper tape 0.127mm 25% overlap
Outer sheath
PVC

Dimensional characteristics

Dimensional characteristics

Conductor cross-section (AWG/KCMIL)
-
Conductor cross-section
250 kcmil
Conductor cross-section
127 mm²
Total number of wires
37
Phase Conductor Diameter
13.2 mm
Nominal insulation thickness
8.13 mm
Minimum insulation thickness
7.75 mm
Diameter over insulation
31.0 mm
Minimum outer sheath thickness
2.53 mm
Outer Diameter
38 mm
Approximate weight
2600 kg/km

Electrical characteristics

Electrical characteristics

Operating voltage
25 kV
Insulation Level
133 %
Maximum operating voltage
26.2 kV
Max. DC resistance of the conductor at 20°C
0.141 Ohm/km
A.C. Conductor resist. 50Hz and at 90 °C
0.18 Ohm/km
Inductive reactance at 50Hz and 90°C flat spaced
0.184 Ohm/km
Perm current rating in air 40°C
490 A
Permissible current rating buried 20°C
475 A
Perm. Current in duct 20°C
345 A
Permissible short circuit current
53.7 kA

Mechanical characteristics

Mechanical characteristics

Maximum pulling tension with pulling eyes
889 kgf

Usage characteristics

Usage characteristics

Laying operation bending radius
532 mm
Minimum Bend Radius - Installed
456 mm
Max. conductor temperature in service
105 °C
Overload maximum core temperature
140 °C
Short-circuit max. conductor temperature
250 °C
Minimum installation temperature
-10 °C
Fire retardant
IEC 60332-3-24 (cat C)
Flame retardant
IEC 60332-1-2
Oil resistance
ICEA S-93-639 (70°C/4h)
U.V resistance
UL 1581

Resources

Resources

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