NFR-3 stranded 30x4mm²

Description

Description

Standards

  • National
    KS C IEC 60502-1; KWS 408

Application

Low-toxic and heat resistant cable for fire alarm in the residential and commerical building. 
 

Standard

K 60502-1

KWS 408

 

Construction

1. Conductor: Solid conductor (Class 1), Annealed copper stranded conductor, Class  2

2. Insulation: Cross-linked polyethylene (XLPE), Max operating temperature: 90°C.

3. Unit: Cabling circularly insulated solid conductor in case of more 2 cores

4. Outer sheath: Black low-toxic and flame retardant polyefin

 

Colors

2 cores: White, Black
3 cores: White, Black, Red
4 cores: White, Black, Red, Green 
more 5 cores: Numbering on black or red colored core. The other are white.

 

Certification

KETI, Korea Eco-label

0.6/1kV NFR-3 design

 ##image:56243##

Conductor

Insulation

Filler

Binder tape

Outer sheath

 

The values of insulation resistance is not defined but only constant number of insulation resistance is defined. (K=min. 36.7MΩ.km at room temperature, min. 0.037MΩ.km at 90°C)

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Conductor material
Annealed copper
Type of conductor
Stranded, class 2
Insulation
XLPE
Outer sheath
LSZH
Colour
all cores are black with white numbering
Construction type
7 x 0.85
With Green/Yellow core
No
With smaller neutral conductor
No

Dimensional characteristics

Dimensional characteristics

Number of cores
30
Conductor cross-section
4 mm²
Average insulation thickness
0.7 mm
Average sheath thickness
1.8 mm
Outer Diameter
31.5 mm
Approximate weight
1820 kg/km
Conductor diameter
2.55 mm
Neutral conductor section (when smaller)
- mm²

Electrical characteristics

Electrical characteristics

Max. DC resistance of the conductor at 20°C
4.61 Ohm/km
Test voltage
3500 V
Rated Voltage Uo/U (Um)
0,6/1 kV

Mechanical characteristics

Mechanical characteristics

Corrosivity
IEC 60754-2

Usage characteristics

Usage characteristics

Operating temperature, range
-15 ... 90 °C
Flame retardant
KSC IEC 60332-3
Smoke density
ASTME 662
Bending factor when installed
12 (xD)

Resources

Resources

Current capacity table XLPE insulation multicore single phase

XLPE or EPR insulation, two loaded conductors/copper or aluminium Conductor temperature: 90 °C, ambient temperature: 30 °C in air, 20 °C in ground
Conductor cross-section
mm² Cu Al Cu Al Cu Al Cu Al Cu Al Cu Al Cu Al
4.0 35.0 27.0 33.0 26.0 40.0 31.0 45.0 35.0 43.0 33.0 46.0 0.0 49.0 38.0
A1 Insulated conductors in conduit in a thermally insulated wall
A2 Multi-core cable in conduit in a thermally insulated wall
B2 Multi-core cable in conduit on a wooden wall
C Single-core or multi-core cable on a wooden wall
D1 Multi-core cable in ducts in the ground
D2 Multi-core cables designed to be buried directly in the ground
E Multi-core cable in free air

Current capacity table XLPE insulation multicore three phase

XLPE or EPR insulation, three loaded conductors/copper or aluminium – Conductor temperature: 90 °C, ambient temperature: 30 °C in air, 20 °C in ground
Conductor cross-section
mm² Cu Al Cu Al Cu Al Cu Al Cu Al Cu Al Cu Al
4.0 31.0 25.0 30.0 24.0 35.0 28.0 40.0 32.0 36.0 28.0 39.0 0.0 42.0 32.0
A1 Insulated conductors in conduit in a thermally insulated wall
A2 Multi-core cable in conduit in a thermally insulated wall
B2 Multi-core cable in conduit on a wooden wall
C Single-core or multi-core cable on a wooden wall
D1 Multi-core cable in ducts in the ground
D2 Multi-core cables designed to be buried directly in the ground
E Multi-core cable in free air

Current capacity table XLPE insulation single core single phase

XLPE or EPR insulation, two loaded conductors/copper or aluminium Conductor temperature: 90 °C, ambient temperature: 30 °C in air, 20 °C in ground
Conductor cross-section
mm² Cu Al Cu Al Cu Al Cu Al Cu Al Cu Al
4.0 35.0 27.0 42.0 33.0 45.0 35.0 43.0 33.0 46.0 0.0 0.0 0.0
A1 Insulated conductors in conduit in a thermally insulated wall
B1 Insulated conductors in conduit on a wooden wall
C Single-core or multi-core cable on a wooden wall
D1 Single core or Multi-core cable in ducts in the ground
D2 Single core or Multi-core cables designed to be buried directly in the ground
F Single-core flat cables, touching in free air

Current capacity table XLPE insulation single core three phase

XLPE or EPR insulation, three loaded conductors/copper or aluminium – Conductor temperature: 90 °C, ambient temperature: 30 °C in air, 20 °C in ground
Conductor cross-section
mm² Cu Al Cu Al Cu Al Cu Al Cu Al Cu Al Cu Al
4.0 31.0 25.0 37.0 29.0 40.0 32.0 36.0 28.0 39.0 0.0 0.0 0.0 0.0 0.0
A1 Insulated conductors in conduit in a thermally insulated wall
B1 Insulated conductors in conduit on a wooden wall
C Single-core or multi-core cable on a wooden wall
D1 Single core or Multi-core cable in ducts in the ground
D2 Single core or Multi-core cables designed to be buried directly in the ground
F Single-core flat cables, touching in free air
Ft Single-core trefoil cables, touching in free air

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