Nexans NX600 Alsecure Cable : Fire Resistant, Low Smoke & Halogen Free Cables

Published 22 Oct 2019

Nexans NX600 Alsecure Cable – Fire Resistant, Low Smoke & Halogen Free Cables

uploaded by Chris Dodds | Thorne & Derrick Sales Marketing Manager

Low Voltage Fire Resistant Power Cable

Nexans Alsecure NX600 fire resistant power cable is ideal for fire safety engineering systems in large multi-storey and complex buildings.

Nexans NX600 is a low smoke, halogen free and fire resistant cable which is designed to meet the requirements of the BS8491 fire test which simulates direct impact and also the effects of a high pressure water hose along with a continuous flame.

BS8491 is the British Standard regulating the method for assessment of fire integrity of large diameter power cables for use as components for smoke and heat control systems and certain other active fire safety systems.

The cable test incorporates direct fire attack, mechanical attack and water spray, over a variable time up to two hours. Several cable makers have produced enhanced fire resistant cables to meet this requirement.

Nexans NX600 Alsecure SWA Fire Resistant Cable

Overcoming Fire Safety Cable Challenges

The increased scale and complexity of building design and architecture has made safe evacuation of the public during a fire evermore complicated.

The compounds and materials used in cable construction further complicate evacuation.

Traditional cables propagate flames and release hazardous fumes when they burn, this relates especially to halogenated PVC sheathed cables.

Fumes released during a fire can be more dangerous to human life than the flames themselves. The gases cause drowsiness, affect breathing and eventually cause death. For this reason, some installations require cables which will release low levels of smoke which is halogen free, and therefore non-toxic to humans.

Nexans Alsecure NX600 fire resistant cable is approved for 30, 60 and 120 minutes applications as detailed in BS8519 (Selection and installation of fire-resistant power and control cable systems for life safety and fire-fighting applications) and can be used in a vast variety of systems in building such as fire-fighting and evacuation lifts, sprinkler systems and wet riser pumps.

The Nexans fire resistant cable is also approved by both LPCB and BASEC to meet the requirements of BS7846-F120 to maintain circuit integrity in the event of a fire.

NX600 Enhanced Fire Resistant Power Cable

Nexan’s NX600 cable is available for sizes up to and including 35sqmm with circular conductors or 50-330sqmm with sector shaped conductors.

The steel wire armour (SWA) is a single layer of galvanised steel wires and the cores are identified by colours and covered with an extruded layer of polymeric compound.

NX600 Alsecure is specified for use in stadia, airports, hospitals, universities, hi-rise offices, residential and public building.

In the rail industry, fire resistant cables provide low voltage power distribution in and around train stations and security systems (video, ventilation, breakdown, emergency lighting).

Fire Resistant, Low Smoke & Halogen Free Cables

Nexans NX600 Alsecure Cable

Features & Benefits

Standards
Fire Resistance	BS 8491 120 min
Flame Propagation	BS EN 50266-2-4, IEC 60332-3-24
Smoke Emission	BS EN 61034
Design	BS 7846
Certification	Certified by BASEC and LPCB
Characteristics
Conductor Material	Copper
Conductor Flexibility	Standard Class 2
Cable Insulation	XLPE & Mica Tape
Cable Outer Sheath	LSF
Colour	Black
Cable Inner Sheath	Halogen Free Compound
Rated Voltage Uo/U (Um)	0.6/1kV
Minimum Installation Temperature	0ºC
Maximum Operating Temperature	90ºC
Short-Circuit Maximum Conductor Temperature	250ºC
Fire Resistant	BS 8491-120
Flame Retardant	IEC 60332-3 Cat.C

Nexans NX600 Alsecure Cable – Product Range

3 Core Cable
Cross Section sqmm	Approx Insulation Thickness mm	Nominal Armour Wire Diameter	Approx Sheath Thickness mm	Approx Overall Diameter mm	Approx Cable Weight kg / km	Max Conductor Resistance at 20ºC	Min Bend Radius
4	0.7	1.25	1.4	20.0	520	4.61	6D
6	0.7	1.25	1.4	20.0	600	3.08	6D
10	0.7	1.25	1.5	20.0	910	1.83	6D
16	0.7	1.25	1.6	22.0	1150	1.15	6D
25	0.9	1.6	1.7	26.0	1650	0.727	6D
35	0.9	1.6	1.8	28.0	1850	0.524	6D
50	1.0	1.6	1.8	31.0	2500	0.387	8D
70	1.1	1.6	1.9	34.0	3100	0.268	8D
95	1.1	2	2.1	39.0	4450	0.193	8D
120	1.2	2	2.2	42.0	5250	0.153	8D
150	1.4	2.5	2.3	47.0	6650	0.124	8D
185	1.6	2.5	2.4	51.0	8050	0.0991	8D
240	1.7	2.5	2.6	56.5	10050	0.0754	8D
300	1.8	2.5	2.7	62.0	12150	0.0601	8D
4 Core Cable
Cross Section sqmm	Approx Insulation Thickness mm	Nominal Armour Wire Diameter	Approx Sheath Thickness mm	Approx Overall Diameter mm	Approx Cable Weight kg / km	Max Conductor Resistance at 20ºC	Min Bend Radius
4	0.7	1.25	1.4	20.0	610	4.61	6D
6	0.7	1.25	1.5	20.1	890	3.08	6D
10	0.7	1.25	1.6	23.5	1020	1.83	6D
16	0.7	1.25	1.6	24.5	1300	1.15	6D
25	0.9	1.6	1.7	28.0	1900	0.727	6D
35	0.9	1.6	1.8	31.0	2430	0.524	6D
50	1.0	1.6	1.9	33.5	3100	0.387	8D
70	1.1	1.6	2.1	40.0	4400	0.268	8D
95	1.1	2	2.2	44.5	5600	0.193	8D
120	1.2	2	2.3	48.0	7100	0.153	8D
150	1.4	2.5	2.4	57.5	8600	0.124	8D
185	1.6	2.5	2.6	60.0	10200	0.0991	8D
240	1.7	2.5	2.7	63.5	12800	0.0754	8D
300	1.8	2.5	2.9	69.5	15500	0.0601	8D

T&D are specialist distributors of fire resistant cable accessories including Ellis Patents Phoenix Cable Cleats and SPS Fire Resistant Cable Joints

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