THW-90 70 mm2 NG

Description

Description

Standards

  • Product
    IEC 60228; NTP 370.252; NTP-IEC 60228
  • Test
    UL 2556

 

Application:

In fixed installations, in buildings, dry or wet indoor locations, in all installations requiring a current capacity greater than TW-80 cable.

 

Construction:

1. Conductor: Compact soft copper, class 2.

2. Insulation: Compound polyvinyl chloride PVC.

 

Main characteristics:

Good dielectric strength, resistance to moisture, grease, oil and heat up to serving temperature. Flame retardant VW-1.

Cross Section:

From 16 mm2 up to 500 mm2.

Marking:

INDECO S.A. THW-90 450/750 V - Section - OIL RESISTANCE II, DOES NOT PROPAGATE THE FLAME VW-1, MADE IN PERU - Year - Sequential length.

Packing:

Non returnable wooden reels.

Colour:

To costumer request.

 

National standards

NTP-IEC 60228: Conductors of insulated cables.

NTP 370.252: Thermoplastic and thermoset insulated cables of rated voltages up to and including 450/750 V.

 

International standards

IEC 60228: Conductors of insulated cables.

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

UL 2556: Wire and Cable Test Methods. Section 9.4: VW1 (Vertical-Specimen) Flame Test.

UL 2556: Wire and Cable Test Methods. Section 4.1: Insulation, overall covering, and jacket materials tests.

UL 2556: Wire and Cable Test Methods. Section 4.2: Physical properties (ultimate elongation and tensile strength)

UL 2556: Wire and Cable Test Methods. Section 4.2.8.4: Gasoline Resistance.

UL 2556: Wire and Cable Test Methods. Section 7.15: Flexibility at room temperature after aging.

UL 2556: Wire and Cable Test Methods. Section 7.2: Heat shock.

UL 2556: Wire and Cable Test Methods. Section 7.6: Cold bend.

UL 2556: Wire and Cable Test Methods. Section 7.8: Deformation.

BENDING RADIUS WHEN INSTALLED IN L.V.

R=Dxf

R: Bending radius when installed (mm)

D: Diameter over sheath or over insulation (when it has not sheath) (mm)

f: Multiplicative factor; given the following table:

Bending radius factor LV

CALCULATION OF CURRENT CONDITION: BUILDING WIRE L.V.; 90°C

CURRENT CAPACITY VALUES AND CURRENT CALCULATION CONDITIONS BASED ON IEC 60364-5-52:2009 :

TABLE B.52.2 (METHOD A1: Two single-core cables in conduit in a thermally insulated wall).
TABLE B.52.10 (METHOD F: Two single-core cables in the air in flat formation and in contact).
Maximum conductor temperature : 90°C.
Ambient air temperature : 30°C.

The above values were corrected with a correction factor for the operating temperature of 90°C.

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Conductor material
Soft copper
Insulating material
PVC
Lead free
Yes
Colour
Black
Conductor flexibility
Class 2 IEC 60228
Conductor shape
Compact stranded

Dimensional characteristics

Dimensional characteristics

Conductor cross-section
70 mm²
Total number of wires
19
Conductor diameter
9.5 mm
Minimum insulation thickness
2.03 mm
Nominal outer diameter
13.8 mm
Approximate weight
700 kg/km
Number of cores
1

Electrical characteristics

Electrical characteristics

Rated Voltage Uo/U (Um)
450/750 V
Dielectric strength
2.5 kV
Time of application Dielectric strength core to screen AC
1 min.
Max. DC resistance of the conductor at 20°C
0.268 Ohm/km
Nominal capacitance
1190.0 pF/m
Perm current rating in air 30°C
298 A
Perm current rating in duct 30°C
179 A

Usage characteristics

Usage characteristics

Flame retardant
UL 1581 VW1
Oil resistance
Oil resistance II
Maximum operating temperature
90 °C
Overload maximum core temperature
130 °C
Short-circuit max. conductor temperature
250 °C
Midspan
No

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