What is Fire alarm Cable

These fire alarm cables are known as enhanced fire resistant which simply means it has been developed specifically with certain scenarios in mind. Some buildings would require a longer fire alarm system activation and these cables are ideal for those fire alarm installations. For example, larger buildings may involve a multi phase evacuation process so the fire alarm would need to operate for a much longer time.

It is suitable for fire monitoring/detection, power limited fire alarm systems, emergency lighting, smoke alarms, smoke detectors, signaling, audio circuits, control circuits, fire protective circuits, fire alarm system and security systems where low smoke, fume and zero halogen cable is required.  The aluminum foil shielding provides protection from power frequency and radio frequency interference.

Fire resistance cable application        Conventional Fire Alarm Design

The cables are tested by being placed in a direct flame and timed until the circuit breaks. From this experiment, they can work out the length of time that cable can survive in direct heat situations, typically around 830°C. The failure point is said to be when the cable does not maintain the voltage or breaks. The cables are then assigned a figure based on the number of minutes it survived, with 120 being the most.

2-cores LSZH Fire resistant cable silicone rubber insulation with drain wire FAC210 3 x 1.5 mm2 LSZH shielded fire alarm cable with drain wire FAC315 4 x 2.5 mm2 low smoke zero halogen fire resistant cable FAC425

The different of PET separator and Fibre Glass Tape separator is during the burning of the fire. PET sepatator is a standard version that is suitable for indoor fire alarm installations where the circuit must be maintained for up to 30 minutes(PH30) while Fibre Glass Tape separator is an enhanced version that is suitable for indoor fire alarm installations where the circuit must be maintained for up to 120 minutes(PH120).

Fire Performance based on:
International – IEC 60331
European Standards – BS EN 50200, BS EN 50267, BS EN 60332, BS EN 61034
UK Standards – BS 8434, BS 8491
Applicable Codes of Practice:
UK Standards – BS 5266, BS 5839, BS 7346, BS 8519, BS 9999

Power Limited-Fire alarm resistance cable 3-conductor cross section4-conductor-Shielded-Fire-Alarm-Resistant-Cable-cross-section-600x450Power Limited-Fire alarm resistance cable 2-conductor cross section

Low Smoke Zero Halogen Fire alarm Cable used in public and government buildings and where there is sensitive electronic equipment (i.e. Hospitals, Supermarkets, Airports, Control Rooms & Computer Suites) these cables are designed for increased safety in the case of a fire:
Reduction in hazardous fumes which can cause injury when inhaled
Reduction in corrosive chemicals which can cause damage to electronics
Historically, most cables used in installations have been insulated with PVC or similar materials. In fires, these insulation materials release chlorine gas. Chlorine is a poisonous gas and a danger to people. In addition it forms hydrochloric acid when coming into contact with water. Hydrochloric acid can have devastating effects on adjacent equipment.
To overcome the problems associated with the release of chlorine gas, halogen-free cables are used. Typically a halogen free cable is made of polypropylene, which does not produce a dangerous gas or acid in fire conditions.

Power limited fire alarm cable is used in fire alarm system

The normal fire alarm cables include 2-core 2 x 1.5mm2 fire alarm lines with Al/PET foil shielding、 3 core 3 x 1.5mm2 fire alarm lines with Al/PET foil shielding and 4-core 4 x 2.5mm2 fire alarm lines with Al/PET foil shielding. You can buy all kinds of fire alarm lines from suteer electronic co.,ltd.