BS 6622:1999:2002 Edition
$198.66
Specification for 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
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 56 |
Specifies requirements for construction and testing of cables with thermosetting insulation for rated voltages from 3.8/6.6 (7.2) kV up to 19/33 (36) kV, for use in fixed industrial installations and buildings.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British�Standard |
| 3 | Contents |
| 7 | 1 Scope 2 Normative references |
| 8 | 3 Definitions rated voltage rated voltage rated voltage maximum voltage cross�linked polyethylene (XLPE) cross�linked ethylene propylene rubber (EPR) thermoplastic polyvinyl chloride compound (PVC) medium density polyethylene (MDPE) type of compound |
| 9 | nominal value approximate value routine tests sample tests type tests tests after installation 4 Voltage designation 5 Conductors 5.1 General 5.2 Circular conductors 5.3 Shaped conductors |
| 10 | Dimensions of shaped solid aluminium conductors 6 Conductor screen 7 Insulation 8 Insulation screen 8.1 General 8.2 Extruded semi�conducting layer 8.3 Metallic layer |
| 11 | 9 Laying�up 9.1 General 9.2 Cables with a metallic screen on each core 9.3 Cables with a collective metallic screen 10 Armour 10.1 Separation layer 10.2 Metal layer |
| 12 | 11 Oversheath 11.1 General 11.2 Thickness for unarmoured cables 11.3 Thickness for armoured cables 11.4 Semi�conducting layer 12 Marking 12.1 Marking of oversheath |
| 13 | 12.2 Identification of year of manufacture 12.3 The mark of an approval organization 12.4 Additional marking 13 Sealing and drumming 14 Dimensions |
| 15 | Single�core cables�3.8/6.6�(7.2)�kV |
| 16 | Three�core cables 3.8/6.6�(7.2)�kV |
| 17 | Single�core cables�6.35/11�(12)�kV |
| 18 | Three�core cables�6.35/11�(12)�kV |
| 19 | Single�core cables�8.7/15�(17.5)�kV |
| 20 | Three�core cables�8.7/15�(17.5)�kV |
| 21 | Single�core cables�12.7/22�(24)�kV |
| 22 | Three�core cables�12.7/22�(22)�kV |
| 23 | Single core cables 19/33 (36) kV |
| 24 | Three�core cables�19/33�(36)�kV 15 Schedule of tests Schedule of tests |
| 25 | 16 Test conditions 16.1 Ambient temperature 16.2 Tolerances on temperature values |
| 26 | Tolerances on temperature values 16.3 Frequency and waveform of power�frequency test voltages 17 Routine tests 17.1 General 17.2 Spark test on oversheath 17.3 Conductor resistance 17.4 Copper wire screen resistance D.C. resistance of copper wire screen 17.5 Partial discharge |
| 27 | Voltage for partial discharge test 17.6 Voltage test on complete cable Voltage for test on complete cable 17.7 Cable markings 17.8 D.C. voltage test on oversheath 18 Sample tests 18.1 General 18.2 Frequency of sample tests |
| 28 | Number of sample tests 18.3 Repetition of tests 18.4 Conductor material and construction 18.5 Conductor screen 18.6 Hot set test of insulation Hot set test conditions and requirements 18.7 Colour of insulation 18.8 Thickness of insulation 18.9 Insulation screen |
| 29 | 18.10 Metallic layer 18.11 Laid�up cores 18.12 Separation layer 18.13 Wire armour 18.14 Strip armour 18.15 Oversheath thickness of unarmoured cables 18.16 Oversheath thickness of armoured cables 18.17 Four�hour voltage test |
| 30 | Four�hour voltage test 19 Type tests�— Materials 19.1 General 19.2 Corner radii of shaped solid conductors 19.3 Conductor screen resistivity 19.4 Insulation material |
| 31 | Cross�linked polyethylene (XLPE) and ethylene propylene rubber compound (EPR) insulation 19.5 Insulation screen resistivity 19.6 Insulation screen cold strippability |
| 32 | 19.7 Separation layer material 19.8 Mass of zinc coating of galvanized steel wires Mass of zinc coating 19.9 Wrapping test for galvanized steel wires |
| 33 | 19.10 Tensile test for aluminium wires and strips 19.11 Oversheath material 19.12 Compatibility test Compatibility requirements |
| 34 | 19.13 Test under fire conditions 20 Type tests�— Electrical 20.1 General 20.2 Partial discharge test 20.3 Bending test 20.4 Tan ¸ test in relation to voltage Tan ¸ in relation to voltage |
| 35 | 20.5 Tan ¸ test in relation to temperature Tan ¸ 20.6 Heating cycle test 20.7 Impulse voltage test Voltage for impulse voltage test 20.8 Four�hour voltage test |
| 36 | 20.9 Adherence of screens at short circuit temperature |
| 37 | (informative) Recommendations for the selection of cables (informative) Recommendations for the selection of cables General Voltage ratings Selection of cables for three�phase a.c. systems |
| 38 | Selection of metallic coverings Metallic coverings�— earth fault capacity Semi�conducting layer on the oversheath |
| 39 | Current carrying capacity (informative) Information to be provided with the enquiry or order (informative) Information to be provided with the enquiry or order (informative) Recommendations for the installation of cables (informative) Recommendations for the installation of cables General Minimum temperature during installation Minimum installation radius |
| 40 | Bending radius during installation Bending radius with cable adjacent to joints or terminations Prevention of moisture ingress Jointing |
| 41 | Compound filling Earthing of armour and/or screen(s) Tests after installation Tests on cables Voltage test after installation |
| 42 | Tests on oversheath (informative) Guidance on the scope of type tests (informative) Guidance on the scope of type tests General Invoking of type tests Sequential electrical type tests |
| 43 | Compatibility test Type tests on components Evidence of type testing |
| 44 | (normative) Partial discharge test (normative) Partial discharge test Test equipment High voltage supply transformer, Voltmeter Calibrator Discharge�free capacitor and a terminating impedance or reflection suppressor (when required) Partial discharge measuring device Calibration |
| 45 | Procedure (normative) Thickness measurements (normative) Thickness measurements Sampling Procedure |
| 46 | (normative) Method of measuring resistivity of extruded semi�conducting conductor and insulation … (normative) Method of measuring resistivity of extruded semi�conducting conductor and insulation … Preparation of test pieces General Test pieces for cables with circular conductors Test pieces for cables with shaped conductors Procedure |
| 47 | Test piece and arrangement of electrodes for measurement of resistivity of conductor screen of ci… |
| 48 | Test piece and arrangement of electrodes for measurement of resistivity of insulation screen of c… |
| 49 | Arrangement of test piece, electrodes and insulating strips for measurement of resistivity of con… |
| 50 | Calculations Conductor screen of circular core Insulation screen of circular core Conductor and insulation screen of shaped core |
| 51 | (normative) Impulse voltage test (normative) Impulse voltage test Test assembly Procedure |
| 52 | (informative) Guide to use (informative) Guide to use Aim Cable selection and design The products described in this British Standard are intended to be used for the supply of electri… These cables are intended for use at a nominal power frequency range of�49�Hz to�61�Hz. There are several aspects which need to be taken into account relating to the capability of the c… The possible effects of transient over�voltages should be recognized as they can be detrimental t… Environmental/application Reasonable protection against mechanical damage, appropriate to the choice of cable and the insta… Cables specified in this British Standard may contain PVC, which when exposed to the effects of e… Cables can be harmed by exposure to corrosive products or solvent substances, including petroleum… Cables specified in this British Standard are not specifically designed for use for the following: If the cables specified in this standard are exposed to localized heat, solar radiation or high t… |
| 53 | The standard sheathing components supplied on these cables do not provide protection against dama… Loaded cables can have a surface temperature which requires protection to be provided against acc… Installation Precautions should be taken to avoid mechanical damage to the cables before and during installati… Exceeding the manufacturer’s recommended maximum pulling tensions can result in damage to the cable. If cables are to be installed in ducts, the correct size of duct should be used. The type of jointing and filling compounds employed should be chemically compatible with the cabl… The cable support system should be such as to avoid damage or danger under normal or fault condit… Cables specified in this British Standard are designed for fixed installations only; they are not… Repeated over�voltage testing can lead to premature failure of the cable, see� The selection of cable glands, accessories and any associated tools should take account of all as… Care should be exercised with single�core cables to ensure that the bonding and earthing arrangem… Storage and handling of drums Cable drums should be regularly inspected during storage to assess their physical condition. Battens, where applied, should not be removed from the drums until the cable is about to be insta… When handling drums, reasonable precautions should be taken to avoid injury. Due regard should be… Care should be taken to avoid deterioration of drums or their becoming a hazard to the general pu… The cable manufacturer should be consulted for detailed guidance as to the safe handling of cable… Scrap cable�— incineration |
