BS 7870-3.50:2011

Superseded

View Superseded by

LV and MV polymeric insulated cables for use by distribution and generation utilities Specification for distribution cables of rated voltage 0.6/1 kV. 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

Available format(s)

Hardcopy , PDF

Superseded date

12-15-2023

Language(s)

English

Published date

08-31-2012

Publisher

British Standards Institution

Foreword
1 Scope
2 Normative references
3 Voltage designation
4 Core conductors
5 Insulation
6 Assembly of cores
7 Concentric conductor
8 Oversheath
9 Marking
10 End sealing
11 Dimensions
12 Tests
13 Routine tests
14 Sample tests
15 Type tests
Annexes
Annex A (informative) - Guide to selection and
use of cables
Annex B (normative) - Test for shrinkage of
oversheath on cable
Bibliography

Defines requirements for the construction, dimensions and mechanical and electrical properties of XLPE insulated, concentric copper wire screened waveform or helical cables with solid aluminium core conductors having a rated voltage of 0.6/1(1.2) kV.

This section of BS 7870 specifies requirements for the construction, dimensions and mechanical and electrical properties of XLPE insulated, concentric copper wire screened waveform or helical cables with solid aluminium core conductors having a rated voltage of 0.6/1(1.2) kV. It is applicable to cables that, when assessed by the specified tests, produce lower levels of smoke and corrosive gases under exposure to fire than cables conforming to BS 7870-3.11 or to BS 7870-3.40.

It specifies requirements for the following types of cable:

3-core, 3-phase, with XLPE insulation, a concentric neutral/earth conductor of copper wires on a synthetic bedding and a thermoplastic oversheath;
4-core, 3-phase and a separate neutral, with XLPE insulation, a concentric earth conductor of copper wires on a synthetic bedding, and a thermoplastic oversheath.

This section of BS 7870 is applicable to cables that are designed for a maximum continuous conductor operating temperature of 80 °C and for a maximum short circuit conductor temperature of 250 °C.

Committee	GEL/20/16
DevelopmentNote	To be read in conjunction with BS 7870-1(2011) & BS 7870-2(2011). Supersedes BS 7870-3.50(2005) and 11/30214071 DC. (12/2011)
DocumentType	Standard
Pages	22
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS 7870-3.50:2023
Supersedes	BS 7870-3.50:2005

HD 627 S1:1996/A2:2005	MULTICORE AND MULTIPAIR CABLES FOR INSTALLATION ABOVE AND BELOW GROUND
BS EN 61034-2 : 2005	MEASUREMENT OF SMOKE DENSITY OF CABLES BURNING UNDER DEFINED CONDITIONS PART 2: TEST PROCEDURE AND REQUIREMENTS
BS EN 61034-1 : 2005	MEASUREMENT OF SMOKE DENSITY OF CABLES BURNING UNDER DEFINED CONDITIONS - PART 1: TEST APPARATUS
BS EN 60332-1-2 : 2004	TESTS ON ELECTRIC AND OPTICAL FIBRE CABLES UNDER FIRE CONDITIONS - PART 1-2: TEST FOR VERTICAL FLAME PROPAGATION FOR A SINGLE INSULATED WIRE OR CABLE - PROCEDURE FOR 1 KW PRE-MIXED FLAME (IEC 60332-1-2:2004)
BS 7870-2:2011	LV and MV polymeric insulated cables for use by distribution and generation utilities Methods of test
HD 605 S2:2008/corrigendum:2010	ELECTRIC CABLES - ADDITIONAL TEST METHODS
HD 620 : 2010	DISTRIBUTION CABLES WITH EXTRUDED INSULATION FOR RATED VOLTAGES FROM 3,6/6 (7,2) KV UP TO AND INCLUDING 20,8/36 (42) KV
BS EN 50267-2-1:1999	Common test methods for cables under fire conditions. Tests on gases evolved during combustion of materials from cables. Procedures Determination of the amount of halogen acid gas - Determination of the amount of halogen acid gas
BS EN 60228:2005	Conductors of insulated cables
BS EN 60811-1-3:1995	Insulating and sheathing materials of electric cables. Common test methods. General application Methods for determining the density. Water absorption tests. Shrinkage test
HD 603 S1:1994/A3:2007	DISTRIBUTION CABLES OF RATED VOLTAGE 0,6/1 KV
BS EN 60332-3-24:2009	Tests on electric and optical fibre cables under fire conditions Test for vertical flame spread of vertically-mounted bunched wires or cables. Category C
HD 626 S1:1996/A2:2002	OVERHEAD DISTRIBUTION CABLES OF RATED VOLTAGE U[O]/U(U[M]): 0,6/1 (1,2) KV
BS EN 60811-1-2:1995	Insulating and sheathing materials of electric cables. Common test methods. General application Thermal ageing methods
BS 7870-3.11:2011	LV and MV polymeric insulated cables for use by distribution and generation utilities Specification for distribution cables of rated voltage 0.6/1 kV. XLPE insulated combined neutral and earth copper wire concentric cables with copper or aluminium conductors
BS 7870-1:2011	LV and MV polymeric insulated cables for use by distribution and generation utilities General