Деградация качества кабельных компаундов
статья Барашков О.К.
Loose Tube core-non-metallic-jelly Filled Cable
LG lightguide cables will provide excellent transmission performance and protection of the fibers in a variety of field environments. These cables are designed for use in areas experiencing a high incidence of lightning or exposure to high voltage.
APPLICATIONS
* Areas with lightning risks.
* Vicinities of power line plants.
* Duct, buried or aerial installation
FEATURES
* Single mode or multimode fiber
* Non-metallic cable core
* Protection from lightning damage and electrical interference
* Standard Fiber Counts : 2-144
CABLE CROSS SECTION
OPTICAL FIBER
FILLING A suitable water-blocking compound
LOOSE TUBE Thermoplastic material
CENTRAL STRENGTH MEMBER Fiberglass Reinforced Plastic (FRP)
CABLE CORE PROTECTION Plastic tapes. This protection can be replaced by aramid yarn layer.
OUTER SHEATH Black polyethylene
FILLER Thermoplastic cylinder which can replace a tube in the cable strand
INNER SHEATH (makerЎЇs option) Black polyethylene
MECHANICAL PROTECTION
CONSTRUCTION
(In case of 36 fibers)
ITEMS |
UNIT |
TYPE OF CABLES |
||
|---|---|---|---|---|
UNARMOURED |
ARMOURED |
|||
USE |
- |
DUCT |
BURIED |
|
NO. OF TUBES |
EA |
6 |
6 |
|
NO. OF FIBERS PER TUBE |
EA |
6 |
6 |
|
STRENGTH MEMBER |
TYPE |
- |
FRP |
FRP |
DIA. |
MM |
NOM.2.7 |
NOM.2.7 |
|
CORE DIA.(NOMINAL) |
MM |
7.5 |
7.5 |
|
INNER SHEATH THICK (NOM.) |
MM |
- |
NOM.1.0 |
|
ARMOURING TYPE |
- |
- |
CORRUGATED STEEL TAPE |
|
OUTER SHEATH THICK(NOM.) |
MM |
2.0 |
1.5 |
|
OUTER DIA.(NOMINAL) |
MM |
12 |
16 |
|
WEIGHT(APPROX.) |
KG/KM |
130 |
250 |
|
DELIVERY LENGTH(NOM.) |
KM |
1~4 |
1~4 |
|
STANDARD LOOSE TUBE SIZE
CLASSIFICATION |
SMALL SIZE |
MEDIUM SIZE |
LARGE SIZE |
|---|---|---|---|
NOMINAL OUTER DIAMETER(MM) |
1.5 |
2.2 |
3.0 |
MAX.NO.OF FIBERS PER TUBE |
1 |
6 |
12 |
MAX.NO.OF FIBERS IN CABLE |
12 |
36 |
144 |
Geometric & optical properties of optical fibers
MFD |
CLADDING DIAMETER |
ATTENUATION (DB/KM) |
DISPERSION (PS/NM.KM) |
CUT-OFF WAVELENGTH (NM) |
||
|---|---|---|---|---|---|---|
1.310 |
1.550 |
1.285~1.330 |
1.550 |
2M |
||
9.5 |
125 |
0.38 |
0.25 |
3.2 |
18 |
1.100~1.330 |
Mechanical & environmental characteristics of cable
CHARACTERISTICS |
UNIT |
TYPE OF CABLES |
|
|---|---|---|---|
UNARMOURED |
ARMOURED |
||
MAXIMUM TENSILE LOAD |
KG |
200 |
200 |
MINIMUM BENDING RADIUS - UNDER NO LOAD - UNDER LOAD |
MM MM |
120 240 |
160 320 |
CRUSH RESISTANCE |
KG/CM |
20 |
40 |
OPERATING TEMP.RANGE |
-40~+70 |
-40~+70 |
|
IDENTIFICATION OF OPTICAL FIBERS
NO.OF FIBER |
COLOR |
NO.OF FIBER |
COLOR |
|---|---|---|---|
1 |
BLUE |
7 |
BROWN |
2 |
ORANGE |
8 |
BLACK |
3 |
GREEN |
9 |
WHITE |
4 |
RED |
10 |
GRAY |
5 |
YELLOW |
11 |
AQUA |
6 |
VIOLET |
12 |
PINK |
ORDERING INFORMATION
LG-LT-XX1-XX2-X3-XXXX4-X5
XX1 CORE CODE : - 00 : Single fiber per tube, Metallic CSM - 10 : Six fibers per tube, Metallic CSM - 20 : Twelve fibers per tube, Metallic CSM
XX2 SHEATH CODE : - 00 : All dielectric sheath - 02 : Moisture barrier, PE sheath - 04 : Inner PE sheath, Steel tape armour, Outer PE sheath - 05 : Moisture barrier, Inner PE sheath, Steel wire armour, Outer PE sheath
X3 FIBER CODE : - 0 : Single mode fiber - 9/125§ - 1 : Multimode fiber -50/125§ - 2 : Multimode fiber -62.5/125§
XXXX4 NUMBER OF FIBERS (0002~0144) X5 COPPER CODE : Number of copper conductors contained in the optical cable (0~4 pairs)
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