For Public Comment DRAFT MALAYSIAN STANDARD. Electric cable: 6.35/11 (12) kv XLPE insulated aerial bundled cable. 15E003R0 g.

Transcription

1 DRAF MALAYSIAN SANDARD 15E003R0 g SAGE : PUBLIC COMMEN (40.20) DAE : 01/10/ /11/2015 Electric cable: 6.35/11 (12) kv XLPE insulated aerial bundled cable ICS: Descriptors: electric cable, multi core, 6.35/11 kv, XLPE insulated, copper tape screened, non-armoured aerial bundled cable Copyright DEPARMEN OF SANDARDS MALAYSIA

2 CONENS Page Committee representation Foreword ii iv 1 Scope 1 2 Normative references 1 3 Definitions 2 4 Construction 2 5 Messenger wire 4 6 Drumming and packaging 5 7 ests 5 able /11(12) kv XLPE insulated aerial bundled cable 6 able 2 Schedule of tests 7 Figure 1 XLPE insulated aerial bundled cable 6 SANDARDS MALAYSIA All rights reserved i

3 Committee representation he Industry Standards Committee on Generation, ransmission and Distribution of Energy (ISC E) under whose authority this Malaysian Standard was developed, comprises representatives from the following organisations: Association of Consulting Engineers Malaysia Atomic Energy Licensing Board Department of Standards Malaysia Federation of Malaysian Manufacturers Jabatan Kerja Raya Malaysia Malaysian Cable Manufacturers Association Malaysian Electrical Appliances and Distributors Association Malaysian Green echnology Corporation Ministry of Domestic rade, Co-operatives and Consumerism Ministry of International rade and Industry Persatuan Kontraktor Elektrikal dan Mekanikal Melayu Malaysia SIRIM Berhad (Secretariat) SIRIM QAS International Sdn Bhd Suruhanjaya Komunikasi dan Multimedia Malaysia Suruhanjaya enaga enaga Nasional Berhad he Electrical and Electronics Association of Malaysia he Institution of Engineers, Malaysia Universiti Malaya Universiti eknologi Malaysia he echnical Committee on Cables and Cable Accessories which supervised the development of this Malaysian Standard was managed by the Malaysian Cable Manufacturers Association in its capacity as an authorised Standards-Writing Organisation and consists of representatives from the following organisations: Association of Consulting Engineers Malaysia Jabatan Bomba dan Penyelamat Malaysia Jabatan Kerja Raya Malaysia Malaysian Association of Standard Users Malaysian Cable Manufacturers Association (Secretariat) Malaysian Electrical Appliances and Distributors Association Maxis Berhad Petroliam Nasional Berhad SIRIM Berhad SIRIM QAS International Sdn Bhd Suruhanjaya enaga elekom Malaysia Berhad enaga Nasional Berhad Universiti Malaya ii SANDARDS MALAYSIA All rights reserved

4 Committee representation (continued) he Working Group on Cables and Cable Accessories which developed this Malaysian Standard consists of representatives from the following organisations: Central Cables Berhad Fajar Cables Sdn Bhd FEC Cables (M) Sdn Bhd Federal Power Sdn Bhd Fujikura Federal Cables Sdn Bhd Leader Cable Industry Berhad Malaysian Cable Manufacturers Association (Secretariat) Master ec Wire and Cable Sdn Bhd Mega Kabel Sdn Bhd Olympic Cable Company Sdn Bhd Pan-International Wire and Cable Sdn Bhd Power Cables Malaysia Sdn Bhd Sama Kebel Sdn Bhd Sindutch Cable Manufacturer Sdn Bhd ai Sin Electric Cables (M) Sdn Bhd enaga Cable Industries Sdn Bhd onn Cable Sdn Bhd Universal Cable (M) Berhad Universal Cable (Sarawak) Sdn Bhd Utama Cables Sdn Bhd SANDARDS MALAYSIA All rights reserved iii

5 Foreword his Malaysian Standard was developed by the Working Group on Cables and Cable Accessories under the authority of the Industry Standards Committee on Generation, ransmission and Distribution of Energy. Development of this standard was carried out by the Malaysian Cable Manufacturers Association which is the Standards-Writing Organisation (SWO) appointed by SIRIM Berhad to develop standards for cables and cable accessories. Compliance with a Malaysian Standard does not of itself confer immunity from legal obligations. iv SANDARDS MALAYSIA All rights reserved

6 Electric cable: 6.35/11 (12) kv XLPE insulated aerial bundled cable 1 Scope his Malaysian Standard specifies the construction, dimensions, test, drumming and packaging requirements of three core Aluminium (AL) conductor aerial bundled cables with extruded cross-linked polyethylene (XLPE) insulation for operation at rated voltage 6.35/11 (12) kv. he cables as prescribed are generally used for medium voltage, fixed installation system for aerial distribution network. It is not intended for use in prolonged water logged conditions and for specialised applications (e.g. welding, crane lifting, mines), which are covered by other Malaysian Standards, where applicable. 2 Normative references he following normative references are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the normative reference (including any amendments) applies. MS IEC 60228, Conductors of insulated cables, Power cables with extruded insulation and their accessories for rated voltages from 1kV (U m = 1.2 kv) up to 30 kv (U m = 36 kv - Part 2: Cables for rated voltages from 6 kv (U m = 7.2 kv) up to 30 kv (U m = 36 kv) MS IEC , Common test methods for insulating and sheathing materials of electric cables and optical cables - Part 1-1: Methods for general application - Measurement of thickness and overall dimensions - ests for determining the mechanical properties MS IEC , Common test methods for insulating and sheathing materials of electric cables - Part 1: Methods for general application - Section wo: hermal ageing methods MS IEC , Common test methods for insulating and sheathing materials of electric and optical cables - Part 1-3: General application - Methods for determining the density - Water absorption tests - Shrinkage test MS IEC , Common test methods for insulating and sheathing materials of electric and optical cables - Part 2-1: Methods specific to elastomeric compounds - Ozone resistance, hot set test and mineral oil immersion tests MS IEC , Common test methods for insulating and sheathing materials of electric cables - Part 3: Methods specific to PVC compounds - Section One: Pressure test at high temperature - ests for resistance to cracking SANDARDS MALAYSIA All rights reserved 1

7 MS IEC , Common test methods for insulating and sheathing materials of electric cables - Part 3: Methods specific to PVC compounds - Section wo: Loss of mass test - hermal stability test MS IEC , Electrical test methods for electrical cables - Part 3: est methods for partial discharge measurements on lengths of extruded power cables IEC 60230, Impulse tests on cables and their accessories IEC , ests on electric and optical fibre cables under fire conditions - Part 1-2: est for vertical flame propagation for a single insulated wire or cable - Procedure for 1 kw premixed flame BS 183, General purpose galvanized steel wire strand BS 2627, Wrought aluminium for electrical purposes BS EN , Steel wire and wire products - non - ferrous metallic coatings on steel wire - Part 2: Zinc or zinc alloy coating 3 Definitions For the purposes of this standard, the definitions given in apply. 4 Construction 4.1 Conductors he conductor shall be plain aluminium to H68 condition in accordance with BS 2627 and shall comply with the requirements of MS IEC In this standard, the conductor shall be circular compacted stranded (Class 2) and the outermost layer of conductor shall have a right hand (Z) direction of lay. 4.2 Conductor screen A conductor screen consisting of an extruded layer of black thermosetting semi-conductive material shall be applied over the conductor. he thickness of screen at any point shall not be less than 0.5 mm. he extruded semi-conductive layer shall be firmly bonded to the insulation. 4.3 Insulation he insulation shall be of cross-linked polyethylene (XLPE) in accordance with, shall be applied over the conductor screen. he nominal and minimum thickness of insulation shall be as specified in able 1. For each piece of core, the smallest value measured shall not fall below 90 % of the nominal value by more than 0.1 mm, i.e.: t min 0.9 t n SANDARDS MALAYSIA All rights reserved

8 and additionally: where, (t max - t min ) / t max 0.15 t max t min t n is the maximum thickness, in millimetres; is the minimum thickness, in millimetres; and is the nominal thickness, in millimetres. NOE. t max and t min are measured at the same cross-section. 4.4 Insulation screen An insulation screen consisting of an extruded layer of black strippable or bonded thermosetting semi-conductive material shall be applied over the insulation. he thickness of screen at any point shall not be less than 0.5 mm. he conductor screen, insulation and insulation screen shall be applied by using triple extrusion process. 4.5 Core identification he three cores shall be identified by means of colour tapes; i.e., red, yellow and blue, applied over the insulation screen and shall remain identifiable throughout the length of cable. 4.6 Metallic screen he metallic screen shall consist of two layers of plain annealed copper tape of nominal thickness ( ) mm and (30 ± 2) mm in width, helically applied over the insulation screen. Each layer of copper tape shall have an overlap of not less than 15 %. 4.7 Separator A layer of separating tape in the form of non-hygroscopic type shall be applied with an overlap over the metallic screen layer. 4.8 Oversheath he oversheath shall be an extruded layer of PVC-S2 in accordance with, applied over the separator. Unless otherwise specified, the colour of the oversheath shall be black. he oversheath shall have a thickness at any point not less than 2.3 mm. Chemical additives may be necessary in the oversheath for special purpose, for example termite protection, but they should not include materials harmful to mankind and/or environment. SANDARDS MALAYSIA All rights reserved 3

9 4.9 Oversheath marking he oversheath of the insulated cable core shall be indelibly marked with numerical number 1, 2 and 3 at an interval of not more than 150 mm corresponding to red, yellow and blue phase. he oversheath of the red phase insulated cable core shall be marked with a complete set of elements in the order specified below. he distance between the end and start of each element shall not exceed 50 mm while the distance between the end and start of each complete set of elements shall not exceed 250 mm. he markings shall consist of upright block characters of approximately the same height of between 3 mm to 10 mm. Element Example of marking a) electric cable; ELECRIC CABLE b) voltage designation; 6.35/11 kv c) standard number; MS 2128 d) name of manufacturer / trademark / brand; e) the three core, nominal area and type of conductor, e.g: 3 x SQMM AL f) year of manufacture; and g) contract number, if any. 5 Messenger wire he messenger wire shall be of galvanised steel wires complying with BS 183 and shall be round and stranded and have the following properties: a) nominal cross-sectional area: 50 mm²; and b) minimum breaking load: 6270 kg. No joints are to be made in the messenger wire except for those in the base rod or wire before final drawing. he messenger wire shall have a right hand (Z) direction of lay. All stranded wires shall not unravel when they are cut in a perpendicular axis. 5.1 Assembling hree insulated cable cores shall be assembled around the messenger wire with a right hand (Z) direction of lay to form the completed aerial bundled cable. he length of lay shall be within 30 to 40 times diameter of the insulated cable cores, such that the cores are assembled onto the messenger wire. 4 SANDARDS MALAYSIA All rights reserved

10 6 Drumming and packaging Both ends of the insulated cable core shall be effectively sealed against ingress of moisture, dirt and insects. Cable drums shall be lagged in order to protect the cable from damage, and the end of the cable projecting from the drum shall also be protected from damage. Each drum shall bear a distinguished number on the outside of the flange and particulars as follows: a) cable type; b) voltage rating; c) length (m); d) conductor size (mm²); e) net weight (kg); f) gross weight (kg); g) name of manufacturer / trademark / brand; h) contract number (if applicable); and i) drum number. 7 ests Cables shall comply with the tests specified in this clause. he category of test, criteria and reference for the test method for cables manufactured to this standard are given in able 2. he tests shall be performed at room temperature, unless otherwise specified. SANDARDS MALAYSIA All rights reserved 5

11 able /11(12) kv XLPE insulated aerial bundled cable Size Nominal area of conductor Nominal hickness of insulation Minimum at any point hickness of oversheath Minimum at any point mm² mm 2 mm mm mm 3 x x x x x x x Aluminium conductor Conductor screen XLPE insulation Insulation screen Identification tape Plain annealed copper tape Separating tape Oversheath Galvanised steel wire Figure 1. XLPE insulated aerial bundled cable 6 SANDARDS MALAYSIA All rights reserved

12 able 2. Schedule of tests ests Requirement Category of test* Reference of test method Conductors: Conductor construction Shall comply with MS IEC S MS IEC Conductor screen: hickness Shall comply with this standard S/ MS IEC Resistivity test Insulation: hickness Shrinkage test Mechanical test before ageing and after ageing in air oven Hot set test Water absorption test Insulation screen: hickness Resistivity test Strippability test Metallic screen: Shall comply with able 1 Shall comply with this standard S/ S/ S/ MS IEC MS IEC MS IEC and MS IEC MS IEC MS IEC MS IEC hickness Shall comply with this standard S (see 4.6) Width Shall comply with this standard S (see 4.6) Overlap Shall comply with this standard S (see 4.6) SANDARDS MALAYSIA All rights reserved 7

13 able 2. Schedule of tests (continued) ests Requirement Category of test* Reference of test method Oversheath: hickness Shall comply with able 1 S/ MS IEC Mechanical test before ageing and after ageing in air oven MS IEC and MS IEC Pressure test at high temperature Loss of mass test Heat shock test Galvanised steel wire: Diameter Breaking load Mass of Zinc coating ests on complete cables: Measurement of electrical resistance High voltage a.c. test for 5 min Bending test, followed by a partial discharge test Shall comply with BS 183 Shall comply with BS 183 Shall comply with BS 183 S/ S/ S/ R R MS IEC MS IEC MS IEC BS 183 BS 183 BS 183 MS IEC Partial discharge test R MS IEC an measurement Heating cycle test, followed by partial discharge test 8 SANDARDS MALAYSIA All rights reserved

14 able 2. Schedule of tests (concluded) ests Requirement Category of test* Reference of test method Impulse test, followed by a voltage test IEC Voltage test for 4 h S/ Flame spread test for PVC sheathed cables (if required) IEC Additional ageing test of completed cables Cable markings * he categories of tests as defined in MS 2128 are as follows: R - Routine test - ype test S - Sample test Shall comply with this standard R Visual SANDARDS MALAYSIA All rights reserved 9

15 Acknowledgements Members of echnical Committee on Cables and Cable Accessories Mr Lokman Ahmad Dahlan (Chairman) Ms Sara Kong (Secretary) Ir Looi Hip Peu Mr Ahmad Isram Osman Ir Hj Mohd Fazli Osman Ms Anuradha Chelliah Mr V.. Doshi Malaysian Cable Manufacturers Association Malaysian Cable Manufacturers Association Association of Consulting Engineers Malaysia Jabatan Bomba dan Penyelamat Malaysia Jabatan Kerja Raya Malaysia Malaysian Association of Standard Users Malaysian Electrical Appliances and Distributors Association Maxis Berhad Petroliam Nasional Berhad SIRIM Berhad SIRIM QAS International Sdn Bhd Mr Vimalan Jeyaseelan Mr M. Faudzi M. Yasir Ms Marina Mahdar Mr Mohamad Nazif Zakaria/ Ms Roslinah Abdullah Ir Amir Hassan Suruhanjaya enaga Mr Mohamad Anuar Nordin/ Ms Norizan Melan elekom Malaysia Berhad Mr Ahmad Fared Osman/ Mr Najib Fadhil Mohd Bisri Mr oh Kim Beng Dr Mohd Rozailan Ibrahim enaga Nasional Berhad Universiti Malaya Members of Working Group on Cables and Cable Accessories Mr Lokman Ahmad Dahlan (Chairman) Ms Sara Kong (Secretary) Mr Ahmad Riduan Mr eh Min Chet/ Mr Goh Seow Chung Mr H Vong/ Mr Amizar Hashim Mr Mohd Nasir Hashim/ Mr Marzuki Mustapha Ms Cheng Siew Guay Mr an Lip Keat/ Mr Shmeni Shariff Mr Yong at Soon Mr Low Yoon Onn Mr Ng Hien Shui Ms Nor Hanita Abdul Ghani/ Ms Zati Izazi Muhamad Zaki Mr Lim Cheng Meng Mr Chen Wee ong/ Ms Raihana Mohd Harith Power Cables Malaysia Sdn Bhd Malaysian Cable Manufacturers Association Central Cables Sdn Bhd Fajar Cables Sdn Bhd FEC Cables (M) Sdn Bhd Federal Power Sdn Bhd Fujikura Federal Cables Sdn Bhd Leader Cable Industry Berhad Olympic Cable Company Sdn Bhd Sindutch Cable Manufacturer Sdn Bhd ai Sin Electric Cables (M) Sdn Bhd enaga Cable Industries Sdn Bhd onn Cable Sdn Bhd Universal Cable (M) Berhad SANDARDS MALAYSIA All rights reserved