Customized Products

Fire Resistant Central Loose Tube Fiber Optic Cables

These 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.

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

Circuit Integrity	IEC 60331-25
Flame Retardance (Single Vertical Wire Test)	EN 60332-1-2; IEC 60332-1-2; BS EN 60332-1-2; VDE 0482-332-1; NBN C 30-004 (cat. F1); NF C32-070-2.1(C2); CEI 20-35/1-2; EN 50265-2-1; DIN VDE 0482-265-2-1
Halogen Free	IEC 60754-1; EN 50267-2-1; DIN VDE 0482-267-2-1; CEI 20-37/2-1; BS 6425-1*
No Corrosive Gas Emission	IEC 60754-2; EN 50267-2-2; DIN VDE 0482-267-2-2; CEI 20-37/2-2; BS 6425-2*
Minimum Smoke Emission	IEC 61034-1&2; EN 61034 -1&2; DIN VDE 0482-1034-1&2; CEI 20-37/3-1&2; EN 50268-1&2; BS 7622-1&2
No Toxic Gases	NES 02-713; NF C 20-454
Oxygen Index	Min. 35%
Temperature Index	Min. 280°C

Note: Asterisk * denotes superseded standard.

Fibers: Single mode fibers, with loose tube technology.

Structure: Central loose tube cable contains one tube with 12 core single mode fibers, which are filled with

water blocking gel.

Fire barrier: The jelly filled tube is wrapped with a fire barrier mica glass tapes.

Water blocking: The jelly filled tube is waterblocked by using swellable tape and thread.

Reinforcement: Fiber glass is wound around the tube to provide physical protection and tensile strength, with

added fire protection.

Armouring(optional): Corrugated steel tape armour is applied over cable core.

The 0.15mm thick steel tape is coated with a copolymer and applied with an overlap.

Outer Sheath: Thermoplastic LSZH compound type LTS3 as per BS 7655-6.1

ACCL (ALMR) 900 IEC 60331-25

Corrugated Steel Tape Armour

Construction Parameters:

Fiber Count	Nominal Overall Diameter	Approx. Weight	Tension load	Crush
No.	mm	kg/km	N	N/100mm
12	10.5	116	500	1000

Temperature range during operation: -30°C - +70°C

Temperature range during storage: -50°C - +70°C

Minimum bending radius: 20 x Overall Diameter

Repeated Impact:	2.0 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)