TECHNICAL SPECIFICATION
FOR
TIGHT-BUFFER/DISTRIBUTION CABLES
FLAME-RETARDANT / LOW SMOKE ZERO HALOGEN
USED FOR INDOOR/OUTDOOR APPLICATION
(Based on GR 409 CORE)
5XXXLZHIOCCC/20
XXX – Core Count
CCC – Fiber Type, 010 = 9/125, 050 = 50/125, 062 = 62.5/125
1. SCOPE
1.1 Application
This specification covers the general requirements for fiber optic telecommunication cables
used for indoor/outdoor application.
1.2 Cable Description
1) Single-Unit, Distribution Cable (2~12 Fibers)
Tight buffered fiber, dielectric strength member and PVC / LSZH (Low Smoke Zero
Halogen) jacket
2) Multi-Unit, Distribution Cable (18~144 Fibers)
Tight buffered sub-unit cables, dielectric central strength member (CSM), PVC / LSZH
(Low Smoke Zero Halogen) jacket
2. OPTICAL FIBER
The optical, geometrical and mechanical performance of the optical fiber shall be in
accordance with Table 1 and Table 2 below.
Table 1. The Optical, Geometrical and Mechanical Performance of the Multi Mode Fiber
SPECIFICATION
ITEMS UNITS
50 Multi Mode 62.5 Multi Mode
Attenuation dB/km
≤ 3.0 at 850nm
≤ 1.1 at 1300nm
≤ 3.5 at 850nm
≤ 1.2 at 1300nm
Bandwidth MHz.km
≥ 400 at 850nm
≥ 600 at 1300nm
≥ 200 at 850nm
≥ 500 at 1300nm
Numerical Aperture -
0.20±0.015 0.275±0.015
Core Diameter
㎛ 50±3.0 62.5±3.0
Core Non-circularity %
≤ 6.0 ≤ 6.0
Cladding Diameter
㎛ 125±2.0 125±2.0
Cladding Non-circularity %
≤ 2.0 ≤ 2.0
Core/Cladding
Concentricity Error
㎛ ≤ 3.0 ≤ 3.0
Coating Diameter
㎛ 245±15 245±15
Proof Test kpsi
≥ 100 ≥ 100
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Table 2. The Optical, Geometrical and Mechanical Performance of the Single Mode Fiber
ITEMS UNITS SPECIFICATION
Typical Attenuation dB/km
≤ 0.50 at 1310nm
≤ 0.40 at 1550nm
Maximum Attenuation dB/km
≤ 0.75 at 1310nm
≤ 0.75 at 1550nm
Chromatic Dispersion ps/nm.km
≤ 3.2 at 1285nm ~ 1330nm
≤ 18 at 1550nm
Zero Dispersion Wavelength nm 1300 ~ 1324
Zero Dispersion Slope ps/nm
2
.km
≤ 0.093
Cut-off Wavelength
(λ cc, 22m of a cabled fiber)
nm
≤ 1270
Mode Field Diameter
㎛
9.3 ± 0.5
Mode Field Concentricity
㎛ ≤ 0.8
Cladding Diameter
㎛
125 ± 1.0
Cladding Non-circularity %
≤ 1.0
Coating Diameter
㎛
245 ± 15
Proof Test kpsi
≥ 100
3. CABLE CONSTRUCTION
The construction of the cable shall be in accordance with Table 3 and Table 4 below.
3.1 Single-unit Cable
Table 3. Construction of the Single-unit Cable
ITEMS DESCRIPTION
Number of Fibers 2 ~ 12
Type of Fiber Single Mode, 62.5 Multi Mode, 50 Multi Mode
Tight Buffer Coating
Material: PVC
Outer diameter: 900±50 ㎛
Dielectric Strength Member Aramid Yarn
Rip Cord
Aramid ripcord
(For 6 ~ 12 fiber cable)
Outer Jacket Material : PVC or LSZH Compound
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3.2 Multi-unit Cable
Table 4. Construction of the Multi-unit Cable
ITEMS DESCRIPTION
Number of Fibers 18 ~ 144
Type of Fiber Single Mode, 62.5 Multi Mode, 50 Multi Mode
Tight Buffer Coating
Material: PVC
Outer diameter: 900±50 ㎛
No. of the Tight
Buffered Fiber
6: For 18~24 FiberCable
12 : For 36~144 FiberCable
Dielectric
Strength Member
Aramid Yarn
Sub-unit
Sub-unit Jacket PVC or LSZH Compound
Dielectric CSM
FRP (Fiberglass Reinforced Plastic) with
PVC or LSZH Coating
Rip Cord Aramid Ripcord
Outer Jacket Material : PVC or LSZH Compound
4. IDENTIFICATION
4.1 The Color Code of the tight buffer coating
Table 5. The Color Code of the Tight Buffer Coating
No. of Tight Buffers Color No. of Tight Buffers Color
1 Blue 7 Red
2 Orange 8 Black
3 Green 9 Yellow
4 Brown 10 Violet
5 Grey 11 Pink
6 White 12 Aqua
4.2 The Color of the sub-unit jacket
Unless otherwise requested by the customer, all single mode sub-unit jackets are yellow, all
50 Multi Mode and 62.5 Multi Mode sub-unit jackets are orange
The identification code & number is printed on the sub-unit jacket repeatedly
(every 10 cm)
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4.3 Outer jacket color
Unless otherwise requested by the customer, all single mode outer cable jackets are yellow,
all 50 Multi Mode and 62.5 Multi Mode outer cable jackets are orange
If the optical fibercable will be used outside, the outer cable jacket will be black.
5. PHYSICAL / MECHANICAL / ENVIRONMENTALPERFORMANCE
5.1 Temperature Range
For the cables covered by this specification, the following temperature ranges apply:
1) Riser Cable
Storage/Shipping temperature range : -40 to 65℃
Installation temperature range : -20 to 50℃
Operating temperature range : -20 to 50℃
2) Plenum and General Purpose Cable
Storage/Shipping temperature range : -40 to 65℃
Installation temperature range : 0 to 50℃
Operating temperature range : 0 to 50℃
5.2 Mechanical and Environmental Performance of the Cable
The mechanical and environmental performance of the cable shall be in accordance with
Table 6 below. Unless otherwise specified, all attenuation measurements required in this
section shall be performed and at 1550nm for single mode fiber
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Table 6. The Mechanical and Environmental Performance of the Cable
ITEMS
TEST METHOD AND
ACCEPTANCE CRITERIA
Tensile Loading
and Bending Test
# Test method: TIA/EIA-455-33A
Mandrel diameter: 30D (D = cable diameter)
Short term tensile load:
2~12 Fibercable : 660N for 30 minutes
18 ~144 Fibercable :1320N for 30 minutes
Long term tensile load : 25% tensile load
for 10 minutes
# Acceptance Criteria
Fiber strain: Less than 60% of the fiber proof strain
for short term tensile load
Attenuation increment: ≤ 0.30 dB at 1300nm (MM)
≤ 0.20 dB at 1550nm (SM)
for long term tensile load
Table 6. The Mechanical and Environmental Performance of the Cable (continued)
ITEMS
TEST METHOD AND
ACCEPTANCE CRITERIA
Compressive Loading
Resistance Test
# Test method: TIA/EIA-455-41A
Applied load: 500 N/10cm for 2~12 Fibercable
1000 N/10cm for 18~144 Fibercable
Duration of loading: 10 minutes
# Acceptance Criteria
Attenuation increment: ≤ 0.30 dB at 1300nm (MM)
≤ 0.20 dB at 1550nm (SM)
Repeated Impact Test
# Test method: TIA/EIA-455-25B
Height of impact: 150mm
Drop hammer mass: 0.5kg for 2~12 Fibercable
2kg for 16~144 Fibercable
No. of impact cycles: 20 cycles
# Acceptance Criteria
Attenuation Increment: ≤ 0.30 dB at 1300nm (MM)
≤ 0.20 dB at 1550nm (SM)
No jacket cracking and fiber breakage
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Cyclic Flexing Test
# Test method: TIA/EIA-455-104A
Sheave diameter: 20D (D = cable diameter)
No. of flexing cycles: 25 cycles
Flexing speed: 30 cycles/minute
# Acceptance Criteria
Attenuation Increment: ≤ 0.30 dB at 1300nm (MM)
≤ 0.20 dB at 1550nm (SM)
No jacket cracking and fiber breakage
Cable Twist Test
# Test method: TIA/EIA-455-85A
Cable length twisted: 2m
No. of twist cycles: 10 cycles
Twist angle: ±180˚
# Acceptance Criteria
Attenuation Increment: ≤ 0.30 dB at 1300nm (MM)
≤ 0.20 dB at 1550nm (SM)
No jacket cracking and fiber breakage
Temperature Cycling Test
# Test method: TIA/EIA-455-3A
Temperature cycling schedule
Riser Cable:25℃→ -20℃→ 50℃→ -20℃→ 50℃→ 25℃
Plenum, General Purpose Cable: 25℃→ 0℃→ 50℃→
0℃→ 50℃→ 25℃
Soak time at each temperature: 24hours
# Acceptance Criteria
Attenuation Increment:≤ 0.50dB/km at 1300nm (MM)
≤ 0.30dB/km at 1550nm (SM)
Flammability Test
# General Purpose Cable: The cable shall comply with
UL-1581, IEEE 383,IEC 332-1
# Riser Cable: The cable shall comply with UL-1666,
IEEE 383,IEC 332-3 Category C
# Plenum Cable: PVC Sheath Cable only
The cable shall comply with UL-910,
IEEE 383, IEC 332-3
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6. PACKING AND MARKING
6.1 Cable Marking
The jacket shall be marked at intervals of one meter with following information.
1) Length marking
2) KRONE
3) Cable type
4) Fiber type & counts
5) UL Marking
6) Year of manufacture
6.2 Cable Packing
6.2.1 Standard length of cable shall be 1km. Other cable length is also available if required by
customer.
6.2.2 Each length of the cable shall be wound on a separate wooden reel or plywood reel.
6.2.3 Both ends of the cable shall be sealed with a suitable plastic cap or a suitable plastic tape to
prevent the entry of moisture during shipping, handling and storage.
6.2.4 Wood-fiber board or circumference battens shall be laid on cable between flanges and fixed
by steel bands
6.2.5 The cable ends shall be securely fastened to the reel to prevent the cable from becoming
loose in transit or during placing operations.
6.3 Cable Reel
6.3.1 The sticker information on the spool
(1) Length of cable in meters
(2) Cable type and fiber counts
(3) Gross weight in kilograms
(4) KRONE
(5) Year of manufacture
6.3.2 Details given below shall be distinctly marked on a weather proof materials on both outer
sides of the reel flange:
(1) Reel number
(2) Arrow showing the direction the drum shall be rolled.
6.3.3 The cable shall be wound on the reel designed to prevent damages during shipment and
installation.
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< Cross-sectional Drawing of Cable >
1. Distribution Cable 12 core
PVC or LSZH Jacket
PVC Tight Buffer Coating
Optical Fiber (Outer Diameter after PUA coating : 245㎛)
Aramid
Yarn
Ripcord (Aramid yarn)
2. Single Mode Distribution Cable 24 core
Optical Fiber (Outer Diameter after PUA coating : 245㎛)
PVC Tight Buffer Coating
Binder yarn
PVC sub-unit Jacket
Central Strength Member)
Ripcord (Aramid yarn)
PVC / LSZH Jacket
SM #2
SM #3
Aramid
Yarn
SM #4
SM #1
== End of Specification ==
. the Tight
Buffered Fiber
6: For 18~24 Fiber Cable
12 : For 36~144 Fiber Cable
Dielectric
Strength Member
Aramid Yarn
Sub-unit
Sub-unit Jacket PVC. for fiber optic telecommunication cables
used for indoor/ outdoor application.
1.2 Cable Description
1) Single-Unit, Distribution Cable (2~12 Fibers)