Industrial Cable Manufacturer

Structure of Stranded Loose Tube Non-metallic Armored Cable Armored steel wire Optical Fiber The optical gel is filled in optical cables before they completed and sheaths are applied to pass waterproof tests and infiltration tests. The buffer tuber is one 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 central strength member: phosphatized steel wire, high-count fiber cable and extruded polyethylene. The water proofing material: filling compound. The damp-proof layer: aluminum-plastic tape. The inner jacket uses black polyethylene and is easy to lay and transport. Armored layer: steel-plastics tape The outer jacket uses black polyethylene and is easy to lay and transport. Description of Stranded Loose Tube Single Steel Wire Armored Cable

The cable features an insert of single-mode or multi-mode into loose tube made of high modulus polyester material and filled with water proof compounds. The center of cable core is a metallic strength core. For the cables with a certain number of cores, the metallic strength core sheathed with polyethylene (PE). The loose tube (and filling rope) is twisted around the central strength core to form a compact circular core, whose cracks are filled with water blocking materials. Extruded polyethylene sheath is inserted into cable after the double chromium-plated plastic steel tape is vertically wrapped. Finally, an extruded polyethylene sheath into cable after armored of single steel wire.

Application of Stranded Loose Tube Non-metallic Armored Cable

The stranded loose tube single steel wire armored cable is suitable for Long distance and interoffice communication.

Parameter 1. Technical parameter

Item	Content	Value
	Number of cable cores	24	36	48	72	96	120	144
Loose tube	Outer diameter	1.8	2.5	2.5	2.5	2.5	2.5	2.5
	Number of Loose Tube* number of cores per tube	4*6	6*6	4*12	6*12	8*12	10*12	12*12
Reference outer diameter	mm	18.5	18.5	20.0	21.0	22.5	24.5	26.0
Center strength member	Material	Steel wire
Water blocking material	Material	Water blocking cable gel
Damp-proof layer	Material	/
Armored layer	Material	Corrugated aluminium belt
Inner sheath	Thickness(±0.1mm)	1.0
Armored layer	Material layer	Corrugated steel belt
Inner sheath	Thickness(±0.1mm)	1.0
Armored layer	Material	Single galvanized steel wire
Outer sheath	Thickness(±0.2mm)	1.8
Range of operating temperature	℃	-40- +70
Pull	short-term /long-term(N)	8000/2000
Flatten		6000/3000
*According to customer's requirements, the stranded loose tube armored cable can customize other structures or cores.

2. Characteristic of optical fiber

		G.652.D	G.655	50/125μm	62.5/125μm
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	-	-	≥500MHz·km	≥200MHz·km
	@1300nm	-	-	≥1000MHz·km	≥600MHz·km
Fiber cutoff wavelength		≤1260nm	≤1260nm	-	-
Polarization Mode Dispersion	Single optical fiber	≤0.20ps/√km	≤0.20ps/√km	-	-
Link value(M=20，Q=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 times	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 meter ±180° 10times	Residual additional attenuation:≤0.03dB
Temperature recycle test	IEC 60794-1-2-F1	-40℃ +70℃	Change of additional attenuation: ≤0.05dB/km
* The monitoring of all optical fiber attenuation's change is operated in wavelength of 1550nm.

Features
We control the optical fiber's surplus length accurately to ensure the capability of resisting tension and temperature characteristics.
The material of loose tube has good hydrolysis - resistant performance and high strength. The tube is filled with special ointment to make key protection for optical fiber.
The polyethylene sheath features good anti ultraviolet radiation performance.
We use the following measures to ensure outstanding water blocking performance.Single steel wire central strength coreFill the loose tube with special compound100% cable core filledPSP enhancing moisture-proof
Installation

Conduit, aerial, Directly burial