BS 6141:1991

Committees responsible
National foreword
Specification
Section one. General
1 Scope
2 References
3 Definitions
4 Temperature ratings
5 Voltage designation
6 Core identification
7 Marking
8 Dimensional test methods
9 Electrical test requirements and methods
10 Durability of marking
11 Tests on completed cables and cords
Section two. Requirements for rubber-insulated cables
                and flexible cords
12 Conductors
13 Insulation
14 Core identification
15 Fillers
16 Braid
17 Sheath
18 Marking
19 Construction and overall dimensions
Section three. Requirements for PVC-insulated cables
                and flexible cords
20 Conductors
21 Insulation
22 Core identification
23 Fillers
24 Sheath
25 Marking
26 Construction and overall dimensions
Section four. Requirements for cables insulated with
                varnished glass fibre or a combination
                of rubber and glass fibre
27 Conductors
28 Insulation
29 Core identification
30 Marking
31 Construction and overall dimensions
32 Mechanical properties of cables
Section five. Requirements for extruded fluorocarbon-
                insulated cables
33 Conductors
34 Insulation
35 Core identification
36 Marking
37 Construction and overall dimensions
38 Mechanical properties of insulation
Appendices
A Method of test for alkali content of glass fibre
B Guidance on the use of insulated cables and cords in
    high temperature zones
Tables
1 Applied voltage and time of application for voltage
    test on core in water
2 Mass to be used and diameter of pulleys for flexing
    test
3 Current for flexing test
4 110 deg C rubber-insulated, non-sheathed cables,
    300/500 V, single core
5 180 deg C rubber-insulated, non-sheathed cables,
    300/500 V, single core
6 180 deg C rubber-insulated, braided cables, 300/500
    V, single core and twisted twin
7 180 deg C rubber-insulated, non-sheathed cables,
    300/300 V, single core
8 85 deg C rubber-insulated, 85 deg C RS 3-sheathed
    flexible cords, 300/500 V, circular twin, 3-core and
    4-core
9 110 deg C rubber-insulated, 110 deg C rubber-
    sheathed flexible cords, 300/500 V, circular twin
    and 3-core
10 180 deg C rubber-insulated, 85 deg C PVC-sheathed
    flexible cords, 300/500 V, circular twin and 3-core
11 180 deg C rubber-insulated, 180 deg C rubber-
    sheathed flexible cords, 300/500 V, circular twin
    and 3-core
12 List of test applicable to the insulated cables and
    cords specified in section two
13 90 deg C PVC-insulated, non-sheathed cables, 300/500
    V, single core
14 90 deg C PVC-insulated, 85 deg C PVC-sheathed light
    flexible cords, 300/300 V, parallel twin, circular
    twin and 3-core
15 90 deg C PVC-insulated, 85 deg C PVC-sheathed
    flexible cords, 300/500 V, circular twin, 3-core and
    4-core
16 List of tests applicable to the insulated cables and
    cords specified in section three
17 155 deg C glass fibre insulated cables, 300/300 V,
    single core
18 185 deg C glass fibre insulated cables, 300/300 V,
    single core, twisted twin and twisted 3-core
19 185 deg C glass fibre insulated, braided cables,
    300/300 V, circular twin and 3-core
20 150 deg C rubber-insulated, glass fibre braided
    cables, 300/300 V, single core
21 List of tests applicable to the insulated cables
    specified in section four
22 150 deg C extruded fluorocarbon-insulated non-
    sheathed cables, 300/300 V, single core
23 List of test applicable to the insulated cables
    specified in section five
24 Conditions for use of insulated cables and cords in
    high temperature zones
Figures
1 Positions for first measurement of insulation
    thickness
2 Position for measurement of sheath thickness
3 Positions of point of intersection of the cross-
    wires of the measuring microscope
4 Flexing test apparatus

Constructional, dimensional and test requirements for cables and cords for voltages up to 300/500 V with PVC, rubber, glass fibre and fluorocarbon insulation for continuous operation at maximum temperatures between 85°C and 185°C.