THW-90 250 KCMIL

Description

Description

Standards

  • Product
    IEC 60227-2; IEC 60228; NTP 370.252
  • Test
    UL 2556
  • National
    NTP 370.250

 

Application:

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

 

Construction:

1. Conductor: Compact soft copper, class B.

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.

Gauge:

From 6 AWG up to 500 kcmil.

Marking:

INDECO S.A. THW-90 450/750 V - Gauge - 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 7.2: 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.

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

Calculation of Current Condition L.V.; 90°C

CALCULATION OF CURRENT CONDITION

Maximum conductor temperature : 90°C.
Ambient air temperature : 30°C.
 

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Conductor material
Soft copper
Insulating material
PVC
Colour
Customer Request
Lead free
Yes
Conductor flexibility
Class B
Conductor shape
Compact stranded
Number of conductors
1

Dimensional characteristics

Dimensional characteristics

Conductor cross-section (AWG/KCMIL)
Conductor cross-section
250 kcmil
Total number of wires
37
Conductor diameter
13.3 mm
Minimum insulation thickness
2.41 mm
Nominal outer diameter
18.3 mm
Approximate weight
1299 kg/km

Electrical characteristics

Electrical characteristics

Rated Voltage Uo/U (Um)
450/750 V
Dielectric strength
3.0 kV
Time of application Dielectric strength core to screen AC
1 min.
Max. DC resistance of the conductor at 20°C
0.1444 Ohm/km
Nominal capacitance
1393.0 pF/m
Perm current rating in air 30°C
455 A
Perm current rating in duct 30°C
290 A

Usage characteristics

Usage characteristics

Oil resistance
Oil resistance II
Flame retardant
UL 1581 VW1
Maximum operating temperature
90 °C
Overload maximum core temperature
130 °C
Short-circuit max. conductor temperature
250 °C
Midspan
Yes
Reference
07

Resources

Resources

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