E(NYM) 3*25

Description

Description

Standards

  • International
    IEC 60227; IEC 60228; IEC 60332-1-2

1. SCOPE

This specification covers PVC insulated, circular, multicore unarmoured cables, rated at 300/500 V according to IEC 60227-4.

 

2. CONSTRUCTION

2.1 Conductor

Plain, annealed electrolytic copper conductors, circular stranded or solid, conforming to the applicable requirements of IEC 60228.

2.2 Insulation

PVC material, conforming to the applicable requirements of IEC 60227-4.

2.3 Assembly

Insulated conductors are laid up, filled where necessary with non-hygroscopic material.

2.4 Sheath

PVC based thermoplastic material, conforming to the applicable requirements of IEC 60227-4.

TEST AT WORKS ACCORDING TO IEC 227-4

Routine Tests

 -          Max. DC conductors resistance at 20°C acc. to IEC 60227-2 parag.2.1

 -          Voltage test between conductors  of finished cable 2000 VAC for 5 minutes.

Liban Cables will carry out these tests on all the lengths and tests certificates will be provided

 

Sample tests

 -          Check of the build - up and color coding of the cable

 -          Check of dimensions

            Insulation          :           according to IEC 60227-2  parag. 1.9

            Oversheath       :           according to IEC 60227-2  parag. 1.10

                                                                                   

These tests will be carried out on one length of each size during each inspection .

Tests certificates will be provided by Liban Cables

 

Type tests

Mechanical characteristics on insulation and sheaths  material (tensile strength and elongation at break  ) in accordance with  IEC  60227-1

These tests will be carried out on one length of the order

Tests certificates will be provided by Liban Cables

DRAWING LV PVC/PVC

Cable identification - LV cables ≤ 1KV

INSULATION COLORS:   

 

Neutral

Cond.1

Cond.2

 Cond.3

Cond.4

1 Conductor

 

BLACK

 

 

 

2 Conductors

GREY

BLACK

 

 

 

3 Conductors

 

BLACK

RED

BLUE

 

4 Conductors

GREY

BLACK

RED

BLUE

 

5 Conductors

GREY

BLACK

RED

BLUE

GREEN

 

All numbered control cables (6 conductors and above), are insulated with white color, and numbered with black digits

 

CABLE MARKING OVER THE OUTER JACKET  (by inkjet printing):

LIBAN CABLES     DESCRIPTION     RATED VOLTAGE     SECTION MM2     Year of manufacture     meter marking

 

Other cable identification requirements are available upon request

Characteristics

Characteristics

Construction characteristics

Construction characteristics

Conductor flexibility
Class 2 IEC 60228
Conductor material
Copper
Conductor shape
Circular
Number of conductors
3
Insulation
PVC
Outer sheath
PVC
Sheath colour
Black
With Green/Yellow core
No

Dimensional characteristics

Dimensional characteristics

Conductor cross-section
25 mm²
Conductor diameter
5.9 mm
Nominal insulation thickness
1.2 mm
Nominal outer sheath thickness
1.6 mm
Nominal outer diameter
22.0 mm
Maximum outer diameter
23.54 mm
Approximate weight
1049 kg/km
Number of cores
3

Electrical characteristics

Electrical characteristics

Max. DC resistance of the conductor at 20°C
0.727 Ohm/km
Permissible current rating in open air
101 A
Test voltage
2000 V
Rated Voltage Uo/U (Um)
300/500 V

Usage characteristics

Usage characteristics

Operating temperature, range
-15 ... 55 °C
Installation temperature, range
-5 ... 50 °C
Ambient air temperature
30 °C
Maximum operating temperature
70 °C
Short-circuit max. conductor temperature
160 °C
Flame retardant
IEC 60332-1-2

Resources

Resources

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