Specification for armoured cables with extruded cross-linked polyethylene or ethylene propylene rubber insulation for rated voltages from 3.8/6.6 kV up to 19/33 kV having low emission of smoke and corrosive gases when affected by fire

Available format(s)

Hardcopy , PDF

Superseded date

29-08-2008

Language(s)

English

Published date

15-12-2000

Publisher

British Standards Institution

Committees responsible
Foreword
1 Scope
2 Normative references
3 Definitions
4 Voltage designation
5 Conductors
6 Conductor screen
7 Insulation
8 Insulation screen
9 Laying up
10 Bedding layer
11 Armour
12 Oversheath
13 Marking
14 End sealing
15 Dimensions
16 Schedule of tests
17 Test conditions
18 Routine tests
19 Sample tests
20 Type tests - Materials
21 Type tests - Electrical
Annex B (informative) Information to be provided with the
                      enquiry or order
Annex C (informative) Recommendations for the installation
                      of cables
Annex D (informative) Guidance on the scope of type tests
Annex E (informative) Partial discharge test
Annex F (normative) Thickness measurements
Annex G (normative) Method of measuring resistivity of
                    extruded semi-conducting conductor and
                    insulation screens
Annex H (normative) Wet compatibility test
Annex I Spare
Annex J (normative) Abrasion test
Annex K (normative) Test for shrinkage of sheath on cable
Annex L (normative) Impulse voltage test
Annex M (normative) Insulation resistance constant test on
                    oversheath
Annex N (informative) Guide to use
Bibliography
Figure G.1 - Test piece and arrangement of electrodes for
             measurement of resistivity of conductor screen
             of circular core
Figure G.2 - Test piece and arrangement of electrodes for
             measuring of resistivity of insulation screen
             of circular core
Figure G.3 - Arrangement of test piece, electrodes and
             insulating strips for measurement of
             resistivity of conductor and insulation screens
             of shaped core
Figure H.1 - Electrochemical test of semi-conducting carbon
             loaded tape layer
Figure J.1 - Abrasion test
Table 1 - Dimensions of shaped solid aluminium conductors
Table 2 - Single-core cables 3.8/6.6 (7.2 kV
Table 3 - Three-core cables 3.8/6.6 (7.2) kV
Table 4 - Single-core cables 6.35/11 (12) kV
Table 5 - Three-core cables 6.35/11 (12) kV
Table 6 - Single-core cables 8.7/15 (17.5) kV
Table 7 - Three-core cables 8.7/15 (17.5) kV
Table 8 - Single-core cables 12.7/22 (24) kV
Table 9 - Three-core cables 12.7/22 (24) kV
Table 10 - Single-core cables 19/33 (36) kV
Table 11 - Three-core cables 19/33 (36) kV
Table 12 - Schedule of tests
Table 13 - Tolerances on temperature values
Table 14 - Voltage for partial discharge test
Table 15 - Voltage for test on complete cable
Table 16 - Number of sample tests
Table 17 - Hot set test conditions and requirements
Table 18 - Four-hour voltage test
Table 19 - Cross-linked polyethylene (XLPE) and ethylene
           propylene rubber compound (EPR) insulation
Table 20 - Mass of zinc coating
Table 21 - Compatibility requirements
Table 22 - Tan d in relation to voltage
Table 23 - Tan d in relation to temperature
Table 24 - Voltage for impulse voltage test
Table A.1 - Selection of cables for three-phase a.c. systems
Table C.1 - Bending radius of cable during installation
Table C.2 - Bending radius of cable adjacent to joints or
            terminations
Table C.3 - Voltage test after installation
Table J.1 - Vertical force on cable during abrasion test

Defines requirements for the testing and construction of armoured cables with thermosetting insulation for rated voltages from 3.8/6.6 (7.2) kV up to 19/33 (36) kV inclusive, when assessed by t he specified tests, produce lower levels of smoke and corrosive products under exposure to fire compared with cables conforming to BS 6622.

Committee	GEL/20/16
DevelopmentNote	Supersedes BS 7835(1996) (11/2000) Supersedes 98/264918 DC. (05/2005)
DocumentType	Standard
Pages	50
PublisherName	British Standards Institution
Status	Superseded
Supersedes	BS 7835:1996

BS 4727-2:GRP08(1994) : 1994	GLOSSARY OF ELECTROTECHNICAL, POWER, TELECOMMUNICATION, ELECTRONICS, LIGHTING AND COLOUR TERMS - TERMS PARTICULAR TO POWER ENGINEERING - ELECTRIC CABLES
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 60811-1-1:1995	Insulating and sheathing materials of electric cables. Common test methods. General application Measurement of thickness and overall dimensions. Tests for determining the mechanical properties - Section 1: Measurement of thickness and overall dimensions - Tests for determining the mechanical properties
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
BS EN 60060-2:1995	High-voltage test techniques Measuring systems
BS EN 60811-2-1:1998	Insulating and sheathing materials of electric cables. Common test methods. Methods specific to elastomeric compounds Methods specific to elastomeric compounds. Ozone resistance, hot set and mineral oil immersion tests
BS EN 50265-2-1:1999	Common test methods for cables under fire conditions. Test for resistance to vertical flame propagation for a single insulated conductor or cable. Procedures 1 kW pre-mixed flame - 1 kW pre-mixed flame
BS EN 60811-1-2:1995	Insulating and sheathing materials of electric cables. Common test methods. General application Thermal ageing methods
BS EN 10002-1:2001	Tensile testing of metallic materials Method of test at ambient temperature