Industrial Cable Manufacturer

Structure


Optical fiber
Gel: water-blocking compound
Loose tube: thermoplastic material
Central strength member: phosphatized steel wire, high fiber count optical cable, extruded polyethylene
Water-blocking material: water-blocking filler
Armored layer: composite steel-plastic tape Inner sheath: black polyethylene (possible)
Outer sheath: blue flame retardant sheath

Description of mining flame retardant optical fiber cable

The mining flame retardant optical fiber cable uses a 250μm optical fiber in the loose tube of a high modulus material and fills the remaining space with a waterproof compound.

A metal strength member is used as the core. In some optical cables with different cores, a polyethylene layer should be extruded out of the metal strength member.

The loose tubes (with filler strip) are stranded around the strength member into a compact cable core which is then filled with the filling compound to protect it from water ingress. Finally, stranded PSP tape serves as the flame retardant sheath.

Parameter Technical parameter

Item	Content	Value
	Number of cores	24	48	72	96	144	288
Loose tube	Quantity of loose tube*quantity of core	4*6	4*12	6*12	8*12	12*12	24*12
	Outer diameter of loose tube/mm	1.8	2.5	2.5	2.5	2.5	2.5
Reference outer diameter	mm	10.0	11.5	12.5	14.5	17.5	18.0
Central strength member	Material	Steel wire
Water-blocking material	Material	Water-blocking gel
Armored layer	Material	Corrugated steel
Outer sheath	Thickness(±0.2mm)	1.8
Operating temperature	℃	-40~+70
Tensile force	Short term/long termN	1500/600
Flatten		1000/300
* We can designed the product according to client's requirement.

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	-	-
Bandwidth	@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	-	-

Main machinery and environment performance

Item	Inspection standard	Procedure of inspection	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	punch hammer: 450g, height: 1m, 5 times at least	Residual additional attenuation≤0.03dB
Backward and forward bending	IEC 60794-1-2-E6	Load: 150N, 30 times	Residual additional attenuation≤0.03dB
Twisting	IEC 60794-1-2-E7	1m , ±180°, 10 times	Residual additional attenuation≤0.03dB
Temperature recycle test	IEC 60794-1-2-F1	-40℃ ~+70℃	Additional attenuation≤0.05dB
Combustion performance	IEC 60332-1-2	Fire resistance	The optical fiber will maintain its attenuation uniformity.
		Flame retardant: every single wire can be burnt vertically.	The distance between lower edge of upper fixture and burnt point:＞50mm
		Flame retardant: combustion for bunched cable	Height of carbonized part＜2.5m
		Density of the smoke	Light transmittance ≥50%
* The monitoring of all optical fiber attenuation's change is operated in wavelength of 1550nm.

Features
This product has outstanding mechanical properties and temperature characteristics.
The loose tube material is waterproof and strong, and the specially designed tight structure will effectively protect the tube against retraction.
Excellent crushing resistance and softness.
The specific sheathe material is flame retardant.
We take a number of actions to ensure the optical cable's water resistance:The central strength member is made of a single steel wire.
We fill a waterproof compound in the loose tube.
Completely fill the cable core.
The PSP tape will improve the moisture resistance.
Installation

Pipeline, Aerial, Direct buried