KRSI-JF-510C-GSP
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TECHNICAL SPECIFICATION
LOOSE TUBE DESIGN,
SINGLE JACKET/ SINGLE ARMOR, JELLY-FILLED,
F/O CABLE
KRSI-JF-510C-GSP
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1.

SCOPE
1.1

Application
This specification covers the general requirements for fiber optic telecommunication
cables used for inter-building backbone in duct, direct buried and lashed aerial installation.
1.2

Cable Description
1)

Single Jacket/Single Armor Jelly filled Cable
Single and 50 or 62.5 Multi mode color coded fibers, jelly filled color coded loose
tubes, PE filler (if required), SZ-stranded around the dielectric central strength member,
jelly filled, dielectric strength member, water blocking tape, corrugated steel tape armor
and outer PE jacket
2.

OPTICAL FIBER
The optical, geometrical and mechanical performance of the optical fiber shall be in
accordance with Table 1 and 2 below.

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
*Note) Superior performance available upon request.
KRSI-JF-510C-GSP
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Table 2. The Optical, Geometrical and Mechanical Performance of the
Single Mode Fiber
ITEMS UNITS SPECIFICATION
Attenuation dB/km

Cladding Non-circularity %

1.0
Coating Diameter

245±15
Proof Test kpsi

100
*Note) Superior performance available upon request.
3.

CABLE CONSTRUCTION
The construction of the cable shall be in accordance with Table 3 below.
Table 3. Construction of the Cable
ITEMS DESCRIPTION
Type of Fiber Single Mode or 62.5 Multi Mode or 50 Multi Mode
Number of Fibers 2 ~ 72
No. of Fibers per Tube Max. 12
Material PBT (Polybutylene Terephthalate)
Loose Buffer
Tube
Diameter Nom. 2.4mm
Filling Compound
in Loose Buffer Tube
Thixotropic Jelly Compound
Filling Compound
between Loose Buffer Tubes
Polybuthane Type Jelly Compound
Central Strength Member FRP(Fiberglass Reinforced Plastic)

Color No. of Fibers/
Loose Buffer Tubes
Color
1Blue7 Red
2 Orange 8 Black
3 Green 9 Yellow
4 Brown 10 Violet
5Gray11Pink
6 White 12 Aqua
KRSI-JF-510C-GSP
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5.

PHYSICAL / MECHANICAL / ENVIRONMENTAL PERFORMANCE
The mechanical and environmental performance of the cable shall be in accordance with
Table 5 below. Unless otherwise specified, all attenuation measurements required in this
section shall be performed at 1550nm for single mode fiber (SM) and at 1300nm for multi
mode fiber (MM).
Table 5. 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: 2,700N for 1 hour
-. Long term tensile load: 1,000N for 10 minutes
# Acceptance Criteria
-. Fiber strain: Less than 60% of the fiber proof strain

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:

0.10 dB (SM)

0.20 dB (MM)
-. No jacket cracking and fiber breakage