24Core Double Jackets Single Mode Armored Underground Cable

Double Jackets Single Mode Armored Underground Cable

1. GENERAL

1. 1 SCOPE

This listed specification covers the design requirements and performance standard for the supply of optical fiber cable in the industry. It also includes HL premium designed cable with opticalmechanical and geometrical characteristics

 

Cable Type

Application

Double Jackets Single Mode Armored Underground Cable

Underground Direct Buried Installation

 

1.2 C able Description

Cable possesses high tensile strength and flexibility in compact cable sizesAt the same timeit provides excellent optical transmission and physical performance.

1.3 Quality

GL ensures a continuing level of quality in our cable products through several quality control programs including ISO 9001.

1.4 Reliability

Both initial and periodic qualification testing are performed to assure the cable's performance and durability in the field environments. .

1.5 The cable are designed, manufactured and tested according to international standards as follow:


 2. B1.3(G652D) Single Mode Fiber

Fiber Optic Cable Specification


 

Attenuation(dB/km)

@1310nm

0.34db/km


@1383nm (after hydrogen aging)

0.32db/km


@1550nm

0.21db/km


@1625nm

0.24db/km

 

Dispersion

@1285nm~1340nm

-3.0~3.0ps/(nm*km)


@1550nm

18ps/(nm*km)


@1625nm

22ps/(nm*km)

Zero-Dispersion wavelength

1300~1324nm

Zero-Dispersion slope

0.092ps/(nm*km)

Mode field diameter @ 1310nm

9.2±0.4pm

Mode field diameter @ 1550nm

10.4±0.8pm

PMD

Max. value for fiber on the reel

0.2ps/km 1/2


Max. Designed value for link

0.08ps/km 1/2

Cable cutoff wavelength, λ cc

1260nm

Effective group index (Neff) @1310nm

1.4675

Effective group index(Neff)@1550nm

1.4680

Macro-bend loss(Φ60mm,100 turns)@1550nm

0.05db

Back scatter characteristic(@1310nm&1550nm)

Point discontinuity

0.05db

Attenuation uniformity

0.05db/km

Attenuation coefficient difference for bi-directional measurement

0.05db/km

Geometrical characteristics

Cladding diameter

125±1pm

Cladding non-circularity

1%

Core/cladding concentricity error

0.4pm

Fiber diameter with coating(uncolored)

245±5pm

Cladding/coating concentricity error

12.0pm

Curl

4m

Mechanical characteristic

Proof test

0.69GPa

Coating strip force(typical value)

1.4N

Dynamic stress corrosion susceptibility parameter(typical value)

20

Environmental characteristics (@1310nm&1550nm)


Temperature induced attenuation(-60~+85)

0.5dB/km

Dry heat induced attenuation(85±2,30days)

0.5dB/km

Water immersion induced attenuation(23±2, 30days)

0.5dB/km

Damp heat induced attenuation(85±2,RH 85%, 30days)

0.5dB/km


3. Cross Section Diagram of Double Jacket Armored Cable

3.1 structure

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3.2 Technical Characteristics

In the Armored Direct Buried CableSingle Mode / Multi Mode fibers are positioned in the loose tubesthe tubes are filled with water  blocking compoundTubes and fillers are stranded around the steel wire strength  member  into a circular cable coreAn coated corrugated steel tape is applied around the core for antirodent functionThe cable is completed with a two HDPE sheath.

Characteristics

1.    High quality optical fiber provides good transmission performance.

2.    Accurate fiber excess length control ensures excellent mechanical and temperature performance.

3.    Corrugated Steel tape armor provide function if anti rodent.

4.    All section water blocking provide reliable performance of moisture-proof and water block.

5.    Steel wire as central strength member gives high tensile strength.

6.    Longitudinal corrugated steel tape presents desirable crush resistance.

7.    0.4 mm Steel Wire as Rib Cord to tear apart the inner HDPE jacket and Outer HDPE Jacket

7.    Strict craft and raw material control enable lifespan over 30 years. 8.

Applications

1.    Adopted to Outdoor distribution.

2.    Suitable for direct buried method.

3.    Long distance and local area network communication.

4.    Used OUTDOOR cabling.

3.3 Optic cable

Fiber count

24    cores

Fiber Type

SM G652D

Fiber No. per tube

6

PBT Loose tube diameter

2.0 mm

Steel wire Central strength member diameter

1.5 mm

Outer sheath thickness/inner sheath thickness

1.8mm / 1.0mm

Outer sheath

HDPE

Inner sheath

HDPE

Cable Outer Diameter in mm

14.8 mm

Cable weight kg/km

150 KG / KM – 220 KG / KM

Operation temperature range

-30  C to + 70  C

Installation temperature range

-30  C to + 70  C

Transport and storage temperature range

-30  C to + 70  C

Allowable Tensile Load(N)

Short term:1000

Long term:3000

Crush resistance

Short term :3000 N/100mm

Long term:1000N/100mm

Minimal installation bending radius

240mm

Minimal operation bending radius

120mm

The fibers shall be marked by a colored coating with 12 different colors according to EIA/TIA 598:

fiber #1: Blue fiber #7: Red

fiber #2: Orange fiber #8: Black (natural with being marked

fiber #3: Green fiber #9: Yellow

fiber #4: Brown fiber #10: Violet

fiber #5: Slate (Grey) fiber #11: Rose (Pink)

fiber #6: White fiber #12: Aqua (Light Blue) 


4.TEST REQUIREMENTS

 Approved  by various  professional  optical  and  communication  product  institution,  GL  also  conduct various  in-house testing  in  its  own  Laboratory  and  Test  Center.  She  also  conduct  test  with  special  arrangement  with  the  Chinese Government  Ministry  of  Quality  Supervision  &  Inspection  Center  of  Optical  Communication  Products  (QSICO). 

GL possess the technology to keep its fiber attenuation loss within Industry Standards.The cable is in accordance with applicable standard of cable and requirement of customerThe following test items are carried out according to corresponding referenceRoutine tests of optical fiber.

Mode field diameter

IEC 60793-1-45

Mode field Core/clad concentricity

IEC 60793-1-20

Cladding diameter

IEC 60793-1-20

Cladding non-circularity

IEC 60793-1-20

Attenuation coefficient

IEC 60793-1-40

Chromatic dispersion

IEC 60793-1-42

Cable cut-off wavelength

IEC 60793-1-44

Tension Loading Test


Test Standard

IEC 60794-1

Sample length

No less than 50 meters

Load

Max. installation load

Duration time

hour

Test results

Additional attenuation:0.05dB    No damage to outer

jacket and inner elements


Crush/Compression Test


Test Standard

IEC 60794-1

Load

Crush load

Plate size

100mm length

Duration time

1 minute

Test number

1

Test results

Additional attenuation:0.05dB    No damage to outer

jacket and inner elements

Impact Resistance Test


Test Standard

IEC 60794-1

Impact energy

6.5J

Radius

12.5mm

Impact points

3

Impact number

2

Test result

Additional attenuation:0.05dB

Repeated Bending Test


Test Standard

IEC 60794-1

Bending radius

20 X diameter of cable

Cycles

25 cycles

Test result

Additional attenuation:  ≤ 0.05dB  No damage to outer jacket and inner elements

Torsion/Twist Test


Test Standard

IEC 60794-1

Sample length

2m

Angles

±180 degree

cycles

10

Test result

Additional  attenuation:0.05dB  No  damage  to  outer jacket and inner elements

Temperature cycling Test


Test Standard

IIEC 60794-1

Temperature step

+20C -30C +70C+20C

 

Time per each step

Transition   from   0 C to   -30 C :2hours;   duration   at -30C:8 hoursTransition from -30C to +70  C:4hours; duration  at  +70C:8  hours;  Transition  from  +70C to 0C:2hours

Cycles

5

 

Test result

Attenuation     variation     for     reference     value     (the attenuation to  be  measured  before test  at +20±3C) ≤ 0.05 dB/km

Water penetration Test


Test Standard

IEC 60794-1

Height of water column

1m

Sample length

1m

Test time

hour

Test result

No water leakage from the opposite of the sample

5. Packing and Marking

Each single length of cable shall be reeled on Fumigated Wooden Drum

Covered by plastic buffer sheet

Sealed by strong wooden battens

At least 1 m of inside end of cable will be reserved for testing.

Drum length: Standard drum length is 3000 meters±2 % and 2000 Meters or as required.

5.2 Drum Marking (can according to the requirement in the technical specification)

Manufacturer name;

Manufacturing year and month

Roll--direction arrow;

Drum length;

Gross/net weight;

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