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Structure of Central Tube Cable

Optical fiber
The optical gel is filled in optical cables before they are completed and sheathed to pass waterproof tests and infiltration tests.
The buffer tube is a kind of the thermoplastic material and is made of polypropylene can nylon. The buffer tuber can be put in fiber cable loosely and protect optical fiber from interior stress and outer side pressure.
The strength member: two parallel phosphatized steel wire.
The water proofing material: filling compound
Armored layer: steel-plastics tape
The outer jacket uses black polyethylene and is easy to lay and transport.

Description of Central Tube Ribbon Fiber Cable

We insert av single-mode or multi-mode into the loose tube made of high modulus polyester material and filled with water proof compounds. The external of loose tube is vertical wrapped double chromium-plated plastic steel tape. Water blocking material is added between the steel belt and loose tube to ensure the compact and vertical water blocking of the cable. Extruded polyethylene sheath into cable with two parallel wires placed on both sides.

Application of Central Tube Ribbon Fiber Cable

The central tube ribbon fiber cable is suitable for access to network and interoffice communication (GYDXTW)

Parameter

1. Technical parameter

Item	Content	Value
Item	Number of cable cores	48	72	96	144	192	216	288	576
Loose tube	Outer diameter	6.4	6.7	7.4	8.7	10.1	10.9	12.6	16.2
Loose tube	Belt and tube structure	12F*4	12F*6	12F*8	12F*12	12F*16	12F*18	12F*24	24F*24
Reference outer diameter	mm	12.5	13.0	13.5	15.0	16.0	17.0	18.5	22.0
Central strength member	Material	Steel wire
Central strength member	Diameteramount(mm)	1.0*4
	Material	Water blocking cable gel
Water blocking material	Material	Corrugated steel belt
Armored layer	Thickness(0.2mm)	2.3
Outer sheath		-40- +70
Range of operating temperature	Short-term/long-term(N)	1000/3000
Pull	Short-term/long-term(N)	1000/3000
*According to customer requirements, the stranded loose tube armored cable can customize other structures or cores.

2. Characteristic of optical fiber

		G.652.D	G.655	50/125m	62.5/125m
Attenuation	@850nm	-	-	3.0dB/km	3.0dB/km
	@1300nm	-	-	1.0dB/km	1.0dB/km
	@1310nm	0.36dB/km	0.36dB/km	-	-
	@1550nm	0.22dB/km	0.23dB/km	-	-
Band width	@850nm	-	-	500MHzkm	200MHzkm
Band width	@1300nm	-	-	1000MHzkm	600MHzkm
Fiber cutoff wavelength		1260nm	1260nm	-	-
Polarization Mode Dispersion	Single optical fiber	0.20ps/km	0.20ps/km	-	-
Link value(M=20Q=0.01%)		0.10ps/km	0.10ps/km	-	-

3. Main machinery and environment performance

Item	Inspection standard	Specified value	Requirements
Pull	IEC 60794-1-2-E1	According to technical parameter	Additional attenuation for short term:0.1dB
Flatten	IEC 60794-1-2-E3	According to technical parameter	Additional attenuation for short term:0.1dB
Impact	IEC 60794-1-2-E4	The height is 1 meter punch hammer 450g at least 50 times1 450g 5	Residual additional attenuation:0.03dB
Backward and forward bending	IEC 60794-1-2-E6	Loading 150N 30times	Residual additional attenuation:0.03dB
Twisting	IEC 60794-1-2-E7	1 meters 180 10	Residual additional attenuation:0.03dB
Temperature recycle test	IEC 60794-1-2-F1	-40 +70	Change of additional attenuation0.05dB/km
* The monitoring of all optical fiber attenuations change is operated in wavelength of 1550nm.

Features

The cable has characteristics of low attenuation and low dispersion.
The tube has good flexibility and anti- bending capacity.
We use the high quality 12, 24 core belt of the pacific optical cable, so the installation is flexible.
The unique steady surplus control technology make the cable has the excellent machinery and environment performance.
The structure of optical fiber belt has high number of core.
The steel wire armoring has good anti-pressure performance.

Installation

Duct, Aerial, Directly burial

Operating Standards

YD/T 981.2-2009 access network fiber ribbon cable Section 2