BS EN 12101-3 PDF
BS EN () and the use of VSDs for smoke control systems. A picture of some inverter drives. Inverter drives are commonly used in smoke control. Details are given for methods of test and the requirements for powered smoke and heat control ventilators (fans) which can be installed in ventilation systems. BSRIA. Page 3 of Report /3 Edition 2. CE Marking to BS EN ºC/2 Hrs, PWA range. Foot mount motors. Carried out for.
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What remains to be seen is whether clients and specifiers appreciate that systems will become more costly due to the need for expensive VSD filters, oversized fan motors and increased power supplies and that plant space requirements needed to accommodate fans and control panels will need to be increased. The Amber document status indicator indicates that some caution is needed when using this document – it is either: Inverter drives are commonly used in smoke control applications.
Many manufacturers provide a fire mode option that disables the control functions and motor protection in an emergency and allows the motors to run to destruction if necessary; however, as there have been very few tests carried out under fire conditions there is a lack of certainty about their performance. You may experience issues viewing this site in Internet Explorer 9, 10 or Also gives details for approval of a range of ventilators and their motors from a limited number of tests.
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BS EN 12101-3:2015
Ventilation equipment, Ventilators, Smoke control, Smoke extraction buildingsSmoke, Heat, Fire safety, Fire safety in buildings, Fire spread prevention, Exhaust systems. As a part of the development process for portable smoke exhaust fans, a numerical analysis model of the portable smoke exhaust fan was derived from the building in which a fire occurred, and an analysis on the smoke and toxic gas exhaust effects was performed in this study. Output filters provide additional protection to motor insulation.
For example, when using smoke extract to protect escape lobbies it is common to vary the speed of the fan according to the pressure in the lobby to prevent the lobby becoming depressurised which could make it difficult to open exit doors. Specification for powered smoke and heat exhaust ventilators AMD Withdrawn.
Using this approach would allow fan and VCD selection methods to remain un-changed, meaning that installers gs system designers would then not be forced to accommodate larger motors, fans or additional control equipment into their design.
BS EN () and the use of VSDs for smoke control systems – SCS Group
Specification for powered smoke and heat control ventilators Fans. Inverter drives also known as variable speed drives or VSDs are commonly used in smoke control applications to limit and 12101–3 fan speed to suit a particular system design. Want access to British Standards? Once this is appreciated, the appeal and advantage of using a fully tested and certified matched smoke e fan and VSD solution should then be recognised.
Of the ns options mentioned, this is the most readily applicable from a practical point of view. Specification for powered smoke and heat control ventilators fans. Click here to find out how to access this document. You may find similar items within these categories by selecting from the choices below:.
Smoke vent specialists should be approaching clients and specifiers to provide early warning of the impending cost increases resulting from the use of certain types of systems.
Smoke and heat control systems. Click image to download a PDF of this article to read or print later.
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On the other hand, if the smoke exhaust fan operates after the fire source disappears, smoke is directly exhausted to the outside due to the operation of the smoke exhaust fan, and the smoke density within the space drops sharply in all opening height conditions, thereby getting close to zero.
With so many pressure control systems currently being specified or at design stage, the industry requires immediate clarity from the approving authority to advise how they intend to enforce the new rules.
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