Fire Resistant Central Loose Tube Fiber Optic Cable, Fire Resistant Optic Fiber Cable

OVERVIEW

SPECIFICATIONS

CONSTRUCTION

PARAMETER

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Application

These Fire resistant Central Loose Tube Fiber Optic cables are characterized by light weight and small diameter, suitable for both aerial and duct installation. They are mainly installed inside buildings, tunnels,subways or closed areas in general, specially designed to guarantee the signal transmission even in case of fire. The cable can also be used for direct burial for armoured version.

Standards:

Basic design to Telcordia GR-20 / RUS 7 CFR 1755.900 (REA PE-90) / ICEA S 87-640

Physical AND THERMAL PROPERTIES

Temperature range during operation (fixed state): -20°C - +60°C
Temperature range during installation (mobile state): 0°C - +50°C
Minimum operation Bending Radius: 10 times the outer diameter for unarmoured cables
20 times the outer diameter for armoured cables
Minimum Installation Bending Radius: 20 times the outer diameter

Specifications

LSZH

Fire Resistance

construction

Fibers:

Singlemode and multimode fibers, with loose tube technology.

Structure:

Central loose tube cable contains one tube with 2-24 single or multimode fibers, which are filled with water blocking gel.

Fire barrier:

The jelly filled tube with up to 24 fibers is wrapped with a fire blocking mica glass tapes. Water blocking: The jelly filled tube is waterblocked by using swellable tape and thread.

Reinforcement:

Either aramid yarn or fiber glass is wound around the tube to provide physical protection and tensile strength, with added fire protection.

Inner sheath (optional):

The cable can be jacketed with either PE or thermoplastic LSZH inner sheath. PE is the preferred option in outdoor environment for water protection purpose.

Moisture Barrier Tape (optional):

An aluminum moisture tape can be incorporated under the sheath for water blocking and shielding purpose.

Armouring(optional):

For diect burial, either galvanized steel wire braid, corrugated steel tape armour or galvanized steel wire armour is applied over an inner polyethylene or LSZH sheath. For steel tape armour, the 0.15mm thick steel tape is coated with a copolymer and applied with an overlap. For steel wire braid or armour, single layer of galvanized steel wire braid or armour is applied.

Ripcord (optional):

An optional ripcord can be located under the jacket to facilitate jacket removal.

Outer Sheath:

Thermoplastic LSZH compound

parameter

Unarmoured type

Steel Wire Braid

Corrugated Steel Tape Armour

Steel Wire armour

Mechanical PROPERTIES

Fiber Compliance

CABLE CODE	FIBER COUNT	TUBE DIAMETER	NOMINAL OVERALL DIAMETER	APPROX. WEIGHT	TENSION LOAD	CRUSH
	(N°)	MM	MM	KG/KM	N	N/100MM
CLA-B-C-H-J-FR	02-06	2.7	8.0	70	1000	1500
CLA-B-C-H-J-FR	08-16	3.5	9.0	90	1200	1500
CLA-B-C-H-J-FR	18-24	4.2	10.0	100	1500	1500

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MAXIMUM COMPRESSIVE LOAD	4000N for unarmoured cables 5000N for armoured cables
REPEATED IMPACT:	4.4 N.m (J)
TWIST (TORSION):	180×10 times, 125×OD
CYCLIC FLEXING:	25 cycles for armoured cables; 100 cycles for unarmoured cables.
CRUSH RESISTANCE:	263N/cm (150lb/in)

TEMPERATURE CYCLING	IEC60794-1-2-F2
TENSILE STRENGTH	IEC60794-1-2-E1A
CRUSH	IEC60794-1-2-E3
IMPACT	IEC60794-1-2-E4
REPEATED BENDING	IEC60794-1-2-E6
TORSION	IEC60794-1-2-E7
KINK	IEC60794-1-2-E10
CABLE BEND	IEC60794-1-2-E11
COOL BEND	IEC60794-1-2-E11