576F Stranded Loose Tube Cable（GYTY)

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Description

In OMC’s 576F Stranded Loose Tube（GYTY) outdoor cable, A Stranded Wire (sometimes sheathed with polyethylene (PE)) locates in the center of core as a metallic strength member. Single-mode/multimode Fiber are positioned in the loose tube, which is made of PBT materials and filled with filling compound. The tubes (and fillers) are stranded around the strength member into a compact and circular core. A PE outer sheath is covered on all Loose tubes.

Standard color of fiber and tube

The color code of the individual fibers, shall be in accordance with the table as below

No.	1	2	3	4	5	6
Color	Blue	Orange	Green	Brown	Gray	White
No.	7	8	9	10	11	12
Color	Red	Black	Yellow	Violet	Pink	Aqua

Tube color code for 12~144 fibers:

No.	1	2	3	4	5	6
Color	Blue	Orange	Green	Brown	Gray	White
No.	7	8	9	10	11	12
Color	Red	Black	Yellow	Violet	Pink	Aqua

Note: # means single black stripe; * means single white stripe.

Cable Structure parameter

Project		unit	parameter
Optical fiber	Number	Core	576
Optical fiber	Model	SM 9/125
Loose tube	material	PBT
	Color Tube	Number	24
	diameter	±0.1mm	2.6
	thickness	±0.05mm	0.35
	Fiber in tube	Number	24
Strength material	Material	GSSW
	diameter	±0.1mm	3
	diameter	±0.1mm	PE5.1
Water blocking yarn Number		2000D	6
Water blocking tape		±0.05mm	0.15
Ripcord Number		3000D	2
Strength Elements	Glass yarn 600D	QTY	12
Inner sheath	Material	MDPE
Inner sheath	thickness	±0.2mm	0.9
Outer sheath	Material	HDPE
	Color	Black
	stripe	Pink
	thickness	±0.1mm	1.8
	diameter	±5% mm	18.7
Cable Weight		±10Kg/km	320

Cable Material parameter

Item		Parameters
Loose tube	Material	PBT
Loose tube	Color	Full color spectrum
Filler	Material	PE
Filler	Color	Black
CSM	Material	FRP
Armoured	Material	Corrugated steel tape
Inner jacket	Material	PE
Inner jacket	Color	Black
Outer jacket	Material	PE
Outer jacket	Color	Black

Mechanical & Environmental Performance

Item	Contents	Value
Max. tensile load	Short term	4000N fiber strain≤0.6%
Max. tensile load	Long term	2200N
Max. crush resistance	Short term	3000N/100mm
Max. crush resistance	Long term	1000N/100mm
Min. bending radius	Installation	30 x cable diameter
Min. bending radius	Operation	15 x cable diameter
Temperature range	Operation	-40℃ ~ +70℃
	Installation	-20℃ ~ +60℃
	Storage/transportation	-40℃ ~ +70℃

Main mechanical & environmental performance test

Item		Acceptance Condition
Tensile Strength IEC 60794-1-2-E1	Load: MAT	Fiber strain ≤ 0.33%
	Length of cable: ≥ 50m	Loss change ≤0.1dB@1550nm after test.
	Load time: 1min	No fiber break and no sheath damage.
Crush Test IEC 60794-1-2-E3	Load: Short term crush	Loss change ≤ 0.1dB@1550nm after test.
Crush Test IEC 60794-1-2-E3	Load time: 1min	No fiber break and no sheath damage.
Impact Test IEC 60794-1-2-E4	Radius: 300 mm	Loss change ≤ 0.1dB@1550nm after test. No fiber break and no sheath damage.
	Points of impact: 3
	Times of per point: 1
	Impact energy: 5J
Repeated Bending IEC 60794-1-2-E6	Bending radius: 20 x OD	Loss change ≤ 0.1dB@1550nm after test.
Repeated Bending IEC 60794-1-2-E6	No. of cycle: 25	No fiber break and no sheath damage.
Torsion IEC 60794-1-2-E7	Length: 2m	Loss change ≤ 0.1dB@1550nm after test.
	Twist angle: ±180°	No fiber break and no sheath damage.
	No. of cycle: 10
Cable bend IEC 60794-1-2-E11	Diameter of mandrel:20 x OD	Loss change ≤ 0.1dB@1550nm after test.
	Number of turns:4	No fiber break and no sheath damage.
	Number of cycles:3
Compound flow IEC 60794-1-2-E14	Length: 30cm
	Temperature:70℃±2℃	No outflow or dripping
	Period:24h
Water Penetration IEC 60794-1-2-F5B	Height of water: 1m	No water leak from the cable core of the
	Sample length: 3m	opposite end
	Time: 24h
Temperature Cycling IEC 60794-1-2-F1	Temperature: -30℃~+60℃	Loss change ≤ 0.1dB@1550nm after test.
	Time of each step: 12h	No fiber break and no sheath damage.
	Number of cycle: 2

Optical fiber technical parameters

Fiber style		Unit	SM 9/125	MM 50/125	MM 62.5/125
Condition		nm	1310/1550	850/1300	850/1300
Attenuation		dB/km	≤0.34/0.2	≤3.0/1.0	≤3.0/1.0
Dispersion	1310nm	Ps/(nm*km)	≤18	…..	…..
Dispersion	1550nm	Ps/(nm*km)	≤22	…..	…..
Bandwidth	850nm	MHZ. KM	…..	≧400	≧160
Bandwidth	1300nm	MHZ. KM	…..	≧800	≧500
Zero dispersion wavelength		nm	≧1302, ≤1322	…..	…..
Zero dispersion slope		nm	≤0.091	…..	…..
PMD Maximum Individual Fiber			≤0.2	…..	…..
PMD Design Link Value		Ps(nm2*km)	≤0.08	…..	…..
Fiber cutoff wavelength λc		nm	≧1180, ≤1330	…..	…..
Cable cutoff wavelength λcc		nm	≤1260	…..	…..
MFD	1310nm	um	9.2±0.4	…..	…..
MFD	1550nm	um	10.4±0.8	…..	…..
Numerical Aperture(NA)			……	0.200±0.015	0.275±0.015
Step(mean of bidirectional measurement)		dB	≤0.05	≤0.10	≤0.10
Irregularities over fiber length and point discontinuity		dB	≤0.05	≤0.10	≤0.10
Difference backscatter coefficient		dB/km	≤0.03	≤0.08	≤0.10
Attenuation uniformity		dB/km	≤0.01	…….	…….
Core diameter		um	……	50±1.0	62.5±2.5
Cladding diameter		um	125.0±0.1	125.0±0.1	125.0±0.1
Cladding non-circularity		%	≤1.0	≤1.0	≤1.0
Coating diameter		um	242±7	242±7	242±7
Coating/chaffinch concentrically error		um	≤12.0	≤12.0	≤12.0
Coating non circularity		%	≤6.0	≤6.0	≤6.0
Core/cladding concentricity error		um	≤0.6	≤1.5	≤1.5
Curl(radius)		um	≤4	…..	…..