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BS 7870-3.50:2023

BS 7870-3.50:2023

$142.49

LV and MV polymeric insulated cables for use by distribution and generation utilities – Distribution cables of rated voltage 0.6/1(1.2) kV. Specification – XLPE insulated, copper wire waveform or helical concentric cables with solid aluminium conductors, having low emission of smoke and corrosive gases when affected by fire (Implementation of HD 603)

Published By Publication Date Number of Pages
BSI 2023 24
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PDF Catalog

PDF Pages PDF Title
5 Foreword
7 1 Scope
2 Normative references
8 3 Terms and definitions
4 Voltage designation
5 Core conductors
Table 1 — Aluminium conductor 3-core, 3-phase cables
9 Table 2 — Aluminium conductor 4-core, 3-phase cables
6 Insulation
10 7 Assembly of cores
8 Concentric conductor
8.1 Material
8.2 Application
8.3 Bedding layer
9 Oversheath
11 10 Marking
10.1 External marking
12 10.2 Additional marking
11 End sealing
12 Dimensions
13 Tests
Table 3 — Schedule of tests
13 14 Routine tests
14.1 General
14 14.2 Conductor resistance
14.3 Voltage test on complete cable
14.4 Spark test
15 Sample tests
15.1 General
15.2 Aluminium conductor tensile test
15.3 Insulation thickness
15.4 Insulation shrinkage at service temperature
15 15.5 Removal of extruded bedding layer
15.6 Concentric conductor wire gaps
15.7 Oversheath thickness and removal
15.8 Flame propagation on a single cable
15.9 Smoke emission
16 16 Type tests
16.1 General
16.2 Corrosive and acid gas
16.3 Insulation
16.4 Shrinkage of insulation
16.5 Waveform repeat and developed length test
Figure 1 — Copper waveform
16.6 Oversheath
17 16.7 Shrinkage of oversheath
16.8 Insulation resistance of oversheath
16.9 Bend test
16.10 Compatibility test
Table 4 — Requirements for compatibility of insulation and oversheath
16.11 Flame propagation on multiple cables
16.12 Smoke emission
16.13 Abrasion test
18 Annex A (informative)  Guide to selection and use of cables
Table A.1 — Guide to use
19 Annex B (informative)  Guidance on type tests
Annex C (normative)  Dimensional requirements of solid aluminium conductors
Figure C.1 — Conductor profile
20 Table C.1 — Solid aluminium conductor dimensions
Annex D (normative)  Test for shrinkage of oversheath on cable
22 Bibliography

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BS 7870-3.50:2023
$142.49