{"id":240845,"date":"2024-10-19T15:46:12","date_gmt":"2024-10-19T15:46:12","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-7870-8-42003\/"},"modified":"2024-10-25T10:31:45","modified_gmt":"2024-10-25T10:31:45","slug":"bs-7870-8-42003","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-7870-8-42003\/","title":{"rendered":"BS 7870-8.4:2003"},"content":{"rendered":"

This section of BS 7870 specifies requirements for the construction, dimensions and mechanical and physical properties of multipair PVC insulated and PVC sheathed cables having reduced fire propagation performance conforming to BS EN 50265-2-1 and BS EN ISO 4589-3.<\/p>\n

It specifies requirements for:<\/p>\n

    \n
  1. multipair cables (2 pairs to 200 pairs) having copper conductors, a collective screen and armouring consisting of a single layer of steel wires;<\/li>\n
  2. multipair cables (20 pairs to 200 pairs) having copper conductors, a collective screen and armouring consisting of a double layer of steel tapes.<\/li>\n<\/ol>\n

    This section of BS 7870 is applicable to cables for use in and around power stations and other installations having similar cable densities.<\/p>\n

    \n

    NOTE A \u201cguide to use\u201d is given in Annex A.<\/p>\n<\/blockquote>\n

    PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
    1<\/td>\nBRITISH STANDARD <\/td>\n<\/tr>\n
    2<\/td>\nCommittees responsible for this British Standard <\/td>\n<\/tr>\n
    3<\/td>\nContents <\/td>\n<\/tr>\n
    5<\/td>\n1 Scope
    2 Normative references
    3 Rated voltage <\/td>\n<\/tr>\n
    6<\/td>\n4 Conductors
    5 Insulation
    6 Identification of cores
    6.1 Cores
    Table 1 – Colour codes <\/td>\n<\/tr>\n
    7<\/td>\n6.2 Pairs, quads and units
    7 Assembly of cores, fillers and binders
    8 Rip cord
    9 Collective screen
    10 Bedding layer <\/td>\n<\/tr>\n
    8<\/td>\n11 Armouring
    12 Oversheath
    13 Marking
    13.1 External marking <\/td>\n<\/tr>\n
    9<\/td>\n13.2 Identification of year of manufacture
    13.3 Mark of an approval organization
    13.4 Additional marking
    14 Dimensions <\/td>\n<\/tr>\n
    10<\/td>\nTable 2 – Multipair cables <\/td>\n<\/tr>\n
    11<\/td>\n15 Tests
    Table 3 – Schedule of tests <\/td>\n<\/tr>\n
    12<\/td>\n16 Routine tests
    16.1 General
    16.2 Conductor resistance
    16.3 Insulation resistance
    16.4 Voltage test
    16.5 Spark test on oversheath
    16.6 Cable markings
    16.7 Diameters over bedding and overall
    17 Sample tests
    17.1 General
    17.2 Conductor material and construction
    17.3 Insulation <\/td>\n<\/tr>\n
    13<\/td>\n17.4 Capacitance unbalance
    17.5 Identification
    17.6 Laid-up cores
    17.7 Rip cord
    17.8 Collective screen
    17.9 Bedding layer
    17.10 Armour wire
    Table 4 – Diameter of armour wire <\/td>\n<\/tr>\n
    14<\/td>\n17.11 Armour tape
    17.12 Oversheath
    17.13 Tests under fire conditions
    18 Type tests
    18.1 General
    18.2 Type approval
    Table 5 – Type approval tests <\/td>\n<\/tr>\n
    15<\/td>\n18.3 Mutual capacitance
    18.4 Capacitance unbalance
    18.5 Mutual inductance
    18.6 Voltage test after bending
    18.7 Armour
    Table 6 – Mass of zinc coating <\/td>\n<\/tr>\n
    16<\/td>\n18.8 Insulation
    Table 7 – Requirements for non-electrical tests for polyvinyl chloride
    18.9 Bedding
    18.10 Oversheath <\/td>\n<\/tr>\n
    17<\/td>\n18.11 Tests under fire conditions <\/td>\n<\/tr>\n
    18<\/td>\nAnnex A (informative)
    Guide to use
    A.1 General
    A.2 Recommendations for selection
    A.2.1 Permissible application
    A.2.2 Maximum permissible voltage
    A.3 Recommendations for storage, transport and disposal
    A.3.1 Storage
    A.3.2 Transport
    A.3.3 Incineration of scrap cable
    A.3.4 Cable end sealing
    A.4 Recommendations for cable laying and installation
    A.4.1 General
    A.4.2 Environmental conditions <\/td>\n<\/tr>\n
    19<\/td>\nA.4.3 Pulling tensions
    A.4.4 Bending radii
    A.4.5 Cable installation <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

    LV and MV polymeric insulated cables for use by distribution and generation utilities. Specification for multicore and multipair cables for installation above and below ground – Single wire or double steel tape armoured and PVC sheathed multipair cable with copper conductors, having reduced fire propagation performance – Section 8.4 Single wire or double steel tape armoured and PVC sheathed multipair cable with copper conductors, having reduced fire propagation performance<\/b><\/p>\n\n\n\n\n
    Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
    BSI<\/b><\/a><\/td>\n2003<\/td>\n22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":240850,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[493,2641],"product_tag":[],"class_list":{"0":"post-240845","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-060-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/240845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/240850"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=240845"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=240845"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=240845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}