BS 8602:2013 pdf download – Method for assessment of fire integrity of cast resin busbar trunking systems for the safety critical power distribution to life safety and fire fighting systems

BS 8602:2013 pdf download – Method for assessment of fire integrity of cast resin busbar trunking systems for the safety critical power distribution to life safety and fire fighting systems 1 Scope This British Standard gives a method for assessment of the fire integrity of castresin busbar trunking systems for the safety critical power distribution to lifesafety and fire fighting systems, intended to maintain circuit integrity whenexposed to fire.It is applicable to cast resin busbar trunkings of rated voltagenot exceeding 1 0oo v a.c. NOTE Busbar trunking systems are specified in Bs EN 61439-6;2012. 2Normative references The following documents, in whole or in part, are normatively referenced in thisdocument and are indispensable for its application.For dated references, onlythe edition cited applies. For undated references, the latest edition of thereferenced document (including any amendments)applies. BS 8491:2008,Method for assessment of fire integrity of large diameter powercables for use as components for smoke and heat control systems and certainother active fire safety systems BS EN 1363-1:1999, Fire resistance tests – Part 1: General requirementsBS EN 60584-1:1996,Thermocouples – Part 1: Reference tables BS EN 61439-6:2012,Low-voltage switchgear and controlgear assemblies – Part 6:Busbar trunking systems (busways) BS EN ISO 13943:2010,Fire safety – Vocabulary 3Terms and definitions For the purposes of this standard, the terms and definitions given inBS EN 1363-1:1999,BS EN 61439-6:2012 and BS EN ISO 13943:2010 apply. 4Apparatus 4.1 Test equipment, as specified in BS EN 1363-1:1999,Clause 4, including theequipment specified in 4.2 to 4.4. 4.2 Furnace, capable of subjecting the busbar trunking assembly under test tothe standard heating and pressure conditions specified in Bs EN 1363-1 andsuitable for testing a busbar trunking assembly comprising both a vertical and ahorizontal section of busbar trunking as shown in Figure 1.The furnace shall beof sufficient size to accommodate the minimum dimensions of the test specimencomprising the components detailed in Clause 5 and as illustrated in Figure 1.The furnace shall have an opening in the roof for the vertical section of thebusbar trunking and an opening in the wall for the horizontal section of thebusbar trunking. 4.3 Six thermocouples, comprising plate type thermometers, type K as defined inBS EN 60584-1:1996 (see Figure 2), to provide a continuous indication of thetemperature at key points within the furnace (see 6.2). 4.4 Equipment for measuring and recording furnace pressure, as specified inBS EN 1363-1:1999, Clause 4. .spring hangers; and tap-off units (if applicable). In the test specimen the busbar trunking...