An electrically operated active fire curtain barrier assembly. Active fire curtain barrier assemblies comprises a woven steel and glass fabric wound on to a steel roller, powered by an internal 24 V d.c. electric motor, enclosed within a 1.2 mm-thick steel box. A bottom bar is fitted to the bottom edge of the curtain providing tension to the curtain with sufficient weight for the curtain to ‘fail-safe by gravity’.

The 24 V motor contains an electromagnetic brake to arrest motion of the curtain when in the open position. Has been tested to the requirements of BS EN 14600:2005 for ‘Durability of Self-Closing’ (500 cycles on primary power and an additional 50 cycles using back-up power; closing speed of 0.08 m/s). Has been tested to the requirements of BS EN 1634-1:2014 for ‘Fire Resistance’ (180 minutes integrity). Has been tested to the requirements of BS EN 1634-1:2014 for ‘Radiant Heat Flux’ (90 minutes).

Operation:

Active fire curtain barrier assemblies commence movement upon initiation of alarm or power or system failure, and fully deploy to the fire operational position within the range of velocities of 0.06 m/s to 0.15 m/s using the unique VarioSpeed™ function. Operating speeds are site adjustable without altering the bottom bar mass. Speeds may be dictated by those authorities having jurisdiction for ‘safety in use’ according to the location, nature or function of each unit.

In the event of a mains supply power failure, the curtain is retained in the open position for a pre-determined period (nominally 30 minutes), using battery back-up power. At the end of the period, the barrier assembly will deploy.

Fire resistance:

180 minutes (3 hours) integrity.

Period of radiation:

107 minutes <15 kW/m².

Classification:

E180 EW90 C0 (single).

Product certification, performance and/ or testing:

Complete barrier assemblies are certified by an independent accredited certification body operating to ISO/ IEC 17065:2012.
Complete barrier assemblies have been tested for fire resistance to BS EN 1634-1, as required by BS 8524-1. The barrier assembly achieved 180 minutes integrity and 90 minutes radiation.
Complete barrier assemblies have been tested for impact to BS 5234-2 as required by BS 8524-1.
Complete barrier assemblies have been tested for reliability, durability and self-closing to BS EN 14600 as required by BS 8524-1.
Complete barrier assemblies have been tested for gravity fail-safe as required by BS 8524-1.
Motor(s) used within barrier assemblies in the above tests have been tested for operation at temperatures of 400°C as required by BS 8524-1.
Complete barrier assemblies have been tested for smoke leakage to BS EN 1634-3 as required by BS 8524-1.
The fabric used within active fire curtain barrier assemblies have been tested to BS EN 1634-3.
The fabric used within active fire curtain barrier assemblies have been tested to BS 476 pt 6 and pt 7.

Approving standards:

The following standards apply to this product:

BS 8524-1:2013, Specification for active fire curtain barrier assemblies.
BS EN 1634-1:2014, Fire resistance and smoke control tests for door, shutter and, openable window assemblies and elements of building hardware. Fire resistance tests for doors, shutters and openable windows.
BS EN 1634-3:2004, Fire resistance and smoke control tests for door and shutter assemblies, openable windows and elements of building hardware. Smoke control test for door and shutter assemblies.
BS EN 1363-1:1999, Fire resistance tests – Part 1: General requirements.
BS EN 1363-2:1999, Fire resistance tests – Part 2: Alternative and additional procedures.
BS EN 13501-2:2007+A1, Fire classification of construction products and building elements. Classification using data from fire resistance tests, excluding ventilation services rating.
BS EN 14600:2005, Doorsets and openable windows with fire resisting and/ or smoke control characteristics. Requirements and classification.
BS 476-6:1989+A1:2009. Fire tests on building materials and structures. Method of test for fire propagation for products.
BS 476-7:1997. Fire tests on building materials and structures. Method of test to determine the classification of the surface spread of flame of products.
BS EN ISO 14184-1:2011. Textiles. Determination of formaldehyde. Free and hydrolysed formaldehyde (water extraction method).
BS EN ISO 9001:2008, Quality management system.
BS EN ISO 14001:2004, Environmental management system.

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