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  • BSI
    BS 7629-1:2015+A1:2019 Electric cables. Specification for 300/500 V fire resistant, screened, fixed installation cables having low emission of smoke and corrosive gases when affected by fire - Multicore cables
    Edition: 2019
    $418.55
    / user per year

Description of BS 7629-1:2015+A1:2019 2019

This British Standard specifies requirements and test methods for the construction and performance of cables which:

  • have thermosetting insulation and a rated voltage of 300/500 V;

  • provide resistance to fire (circuit integrity), including with mechanical shock and with water, as measured by performance in a standard test or tests;

  • emit limited amounts of smoke and corrosive gases when burned as measured by a standard test; and

  • are primarily intended for use in emergency lighting, fire detection and fire alarm system circuits.

The circuit integrity performance under fire conditions is assessed on the basis of tests which measure resistance to fire with mechanical impact and water spray (Categories: Standard 30, Standard 60 and Enhanced 120).

NOTE 1 BS 5266‑1 and BS 5839‑1 give recommendations and guidance on the factors to be taken into account in the planning, design, installation, commissioning and maintenance of emergency lighting, fire detection and fire alarm systems for buildings, respectively.

It is applicable to 2‑core, 3‑core and 4‑core circular cables with an uninsulated full-size circuit protective conductor (CPC), and 7‑core, 12‑core and 19‑core circular multicore auxiliary cables with an uninsulated drain wire of not less than 0.5 mm2. All cables contain a metallic layer, which provides electrostatic screening.

The cables are suitable for operation at a maximum sustained conductor temperature of 70 °C and for a maximum short‑circuit conductor temperature of 250 °C (for a maximum period of 5 s).

NOTE 2 Annex A gives recommendations for the selection, installation and operation of cables, Annex B gives the method of test for continuity of tinned coating of wires, Annex C gives the method of test for voltage withstand, Annex D gives the method of test for bending characteristics, Annex E gives the method of test for resistance to impact, Annex F gives the method of test for shrinkage of sheath and Annex G gives notes on type tests.



Standard NumberBS 7629-1:2015+A1:2019
TitleElectric cables. Specification for 300/500 V fire resistant, screened, fixed installation cables having low emission of smoke and corrosive gases when affected by fire - Multicore cables
StatusUnder Review
Publication Date2019-06-20
ReplacesBS 7629-1:2008
AmendsBS 7629-1:2015
DescriptorsImpact testing, Emergency lighting, Fire-resistant materials, Electrical testing, Type testing, Smoke, Selection, Thickness, Installation, Electric cables, Fire detectors, Multipair cables, Thermosetting polymers, Thickness measurement, Fire alarms, Sheathed cables, Multicore cables, Gases, Fire resistance, Performance, Insulated cables, Colour codes, Dimensions, Marking, Bend testing, Rated voltage, Cable sheaths
ICS29.060.20 Cables, 13.220.99 Other standards related to protection against fire
CommitteeGEL/20/17
ISBN978 0 580 99630 6
PublisherBSI
Pages36

The following editions for this book are also available...

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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