BS 7912:2001
$189.07
Power cables with XLPE insulation and metallic sheath, and their accessories, for rated voltages from 66 kV (Um=72.5 kV) to 132kV (Um=145kV). Requirements and test methods
| Published By | Publication Date | Number of Pages |
| BSI | 2001 | 46 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British�Standard |
| 3 | Contents |
| 5 | 1 Scope 2 Normative references |
| 6 | 3 Definitions 3.1 rated voltage 3.2 rated voltage 3.3 maximum voltage 4 Voltage designation and materials 4.1 Voltage designation |
| 7 | Table 1 – Test voltages |
| 8 | 4.2 Cable maximum temperatures Table 2 – Cable maximum temperatures 4.3 Metallic cable sheathing materials 4.4 Non-metallic cable sheathing materials 5 Precautions against water penetration in cables 6 Cable characteristics |
| 9 | 7 Accessory characteristics 8 Test categories and conditions 8.1 Categories of tests 8.2 Ambient temperature 8.3 Frequency and waveform of power frequency test voltage 8.4 Waveform of impulse test voltage |
| 10 | 9 Routine tests on cables 9.1 General 9.2 Measurement of electrical resistance of conductor 9.3 Partial discharge test 9.4 Voltage test |
| 11 | 9.5 Electrical test on non-metallic sheath 9.6 Dimensional checks |
| 12 | 10 Sample tests on cables 10.1 General 10.2 Frequency of tests Table 3 – Number of samples for sample tests 10.3 Repetition of tests 10.4 Volume resistivity of semiconducting layers |
| 13 | 10.5 Hot set test for XLPE insulation Table 4 – Test conditions and requirements for particular characteristics of cable insulating materials 10.6 Shrinkage test for XLPE insulation 10.7 Insulation/screen moisture content determination |
| 14 | 10.8 Properties of water blocking tape |
| 15 | Figure 1 – Swell height for water blocking tape |
| 16 | 10.9 Cross-linking by-product concentration 10.10 Examination for contaminants in insulation 10.11 Measurement of capacitance |
| 17 | 11 Type tests — Summary 11.1 General 11.2 Range of type approval for cables 11.3 Range of type approval for accessories 11.4 Summary of type approval tests |
| 18 | Table 5 – Type tests on cable components 12 Electrical type tests on cables 12.1 Electrical tests on complete cable 12.2 Sequence of tests |
| 19 | 12.3 Special provisions 12.4 Check on insulation thickness of cable for electrical type tests 12.5 Bending test 12.6 Partial discharge test 12.7 Tan ¸ measurement as a function of the voltage and capacitance measurement |
| 20 | Table 6 – Tan ¸ in relation to voltage 12.8 Tan ¸ measurement as a function of temperature Table 7 – Tan ¸ in relation to temperature 12.9 Load cycle voltage test |
| 21 | 12.10 Impulse voltage test 12.11 Power frequency voltage test Table 8 – Power frequency voltage test 12.12 Cable examination 13 Type tests on cable components 13.1 Check of cable construction 13.2 Ageing tests on pieces of complete cable to check compatibility of materials |
| 22 | Table 9 – Tests and requirements for mechanical characteristics of XLPE insulating material before and afte… |
| 23 | Table 10 – Tests and requirements for mechanical characteristics of cable sheathing materials before and aft… 13.3 Tests for determining the mechanical properties of insulation before and after ageing 13.4 Visual examination of semiconducting screens |
| 24 | 13.5 Hot set test for XLPE insulation 13.6 Shrinkage test for cable insulation Figure 2 – Shrinkage test 14 Water penetration type test on complete cables 14.1 General |
| 25 | 14.2 Sampling Figure 3 – Schematic diagram of apparatus of water penetration test 14.3 Procedure |
| 26 | 14.4 Requirement 15 Mechanical and thermal type tests on complete cables 15.1 General 15.2 Impact test 15.3 Abrasion, penetration, bending and saline bath tests on anti-corrosion coverings for self co… |
| 28 | Figure 4 – Possible arrangement of sample in saline bath 15.4 Corrosion penetration test for aluminium sheathed cables |
| 29 | 15.5 Internal thermal resistance of complete cable 16 Type tests on accessories 16.1 General 16.2 Tests and requirements |
| 30 | 16.3 Partial discharge test 16.4 Load cycle voltage test 16.5 Impulse voltage test 16.6 Power frequency voltage test 16.7 D.C. voltage test Table 11 – D.C. voltage test values |
| 31 | 16.8 Examination 16.9 Test on the non-metallic protective covering of joints 16.10 Breakdown voltage test (optional) 16.11 Tests on buried joints |
| 32 | Table 12 – Impulse voltage test levels 16.12 Tests for outdoor terminations Table 13 – Salt fog test voltage levels Table 14 – Internal pressure levels for hydraulic test |
| 33 | 16.13 Tests for SF 17 Type tests on ancillary equipment 17.1 Tests and requirements for cable bonding leads |
| 34 | Table 15 – Construction of single core bonding leads Table 16 – Construction of concentric bonding leads |
| 36 | Table 17 – Test voltages for bonding leads Table 18 – Conductor resistance 17.2 Tests and requirements for SVLs |
| 38 | 17.3 Physical requirements for link housings Table 19 – Short circuit requirements for terminal posts and links |
| 40 | 17.4 Type testing requirements for link housings 18 Electrical tests after installation 18.1 Testing of insulation (cable and accessory) |
| 41 | 18.2 Verification of specially bonded sheath systems 18.3 Verification of positive phase and zero sequence impedance |
| 43 | 18.4 D.C. conductor resistance test 18.5 Voltage test on sheath insulation 18.6 Test on sheath voltage limiters |
| 44 | Table 21 – Voltage and current range for silicon carbide units |
