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GB/T 18890.2-2015: Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 220 kV (Um = 252 kV) - Part 2: Power cables Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 18890.2-2015: Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 220 kV (Um = 252 kV) - Part 2: Power cables---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT18890.2-2015 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.060.020 K 13 Replacing GB/Z 18890.2-2002 Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 220 kV (Um = 252 kV) - Part 2. Power cables Issued on: OCTOBER 09, 2015 Implemented on: MAY 01, 2016 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the People's Republic of China. Table of ContentsForeword ... 3 1 Scope ... 6 2 Normative references ... 6 3 Terms and definitions ... 8 4 Use characteristics ... 9 5 Product naming ... 10 6 Technical requirements ... 12 7 Marking of finished power cables ... 19 8 Test requirements ... 19 9 Acceptance rules ... 23 10 Packaging, transportation and storage ... 23 Appendix A ... 25 Appendix B ... 27 Bibliography ... 28ForewordGB/T 18890 “Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 220 kV (Um = 252 kV)” is divided into three parts. - Part 1. Test methods and requirements; - Part 2. Power cables; - Part 3. Accessories. This Part is Part 2 of GB/T 18890. This Part is drafted in accordance with the rules given in GB/T 1.1-2009. This Part replaces GB/Z 18890.2-2002 “Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 220 kV (Um = 252 kV) - Part 2. Power cables with cross-linked polyethylene insulation for rated voltage of 220 kV (Um = 252 kV)”. Compared with GB/Z 18890.2-2002, the main technical changes of this Part are as follows. - The nature of the standard is revised FROM technical guidance document TO recommended standard; - The standard name is revised FROM “Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 220 kV (Um = 252 kV) - Part 2. Power cables with cross-linked polyethylene insulation for rated voltage of 220 kV (Um = 252 kV)” TO “Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 220 kV (Um = 252 kV)”; - ADD the definition of metal-plastic laminated sheathes (see 3.2); - ADD use characteristics and power cable ampacity (see 4.3); - ADD the code, model and name of metal-plastic laminated sheathes (see 5.1, Table 1); - MODIFY the note of corrugated aluminum sheathes (see Table 1, note of 5.1 in 2002 edition); - ADD the requirements and labeling methods for copper wire shielding (see 5.3); - DELETE Chapter 6 “Materials” in 2002 edition, its content is included in the relevant chapters of technical requirements; Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 220 kV (Um = 252 kV) - Part 2. Power cables1 ScopeThis Part of GB/T 18890 specifies the model, naming, technical requirements, test and inspection rules, packaging, transportation and storage of fixedly installed power cables with cross-linked polyethylene insulation for rated voltage of 220 kV (Um = 252 kV). This Part applies to single-core power cables used under normal installation and operating conditions; it is not applicable to the cables used under special conditions, such as submarine power cables.2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this document. GB/T 494-2010 Asphalt used in roofing GB/T 2951.11-2008 Common test methods for insulating and sheathing materials of electric and optical cables - Part 11. Methods for general application - Measurement of thickness and overall dimensions - Tests for determining the mechanical properties GB/T 2951.12-2008 Common test methods for insulating and sheathing materials of electric and optical cables - Part 12. Methods for general application - Thermal aging methods GB/T 2951.14-2008 Common test methods for insulating and sheathing materials of electric and optical cables - Part 14. Common test methods - Low Temperature Test GB/T 2951.21-2008 Common test methods for insulating and sheathing materials of electric and optical cables - Part 21. Methods specific to elastomeric compounds - Ozone resistance, hot set and mineral oil immersion tests GB/T 2951.31-2008 Common test methods for insulating and sheathing materials of electric and optical cables - Part 31. Methods specific to PVC compounds - Pressure test at high temperature - Test for resistance to cracking GB/T 2951.32-2008 Common test methods for insulating and sheathing materials of electric and optical cables - Part 32. Methods specific to PVC compounds - Loss of mass test - Thermal stability test GB/T 2951.41-2008 Common test methods for insulating and sheathing materials of electric and optical cables - Part 41. Methods specific to polyethylene and polypropylene compounds - Resistance to environmental stress cracking - Measurement of the melt flow index - Carbon black GB/T 3048.4-2007 Test methods for electrical properties of electric cables and wires - Part 4. Test of DC resistance of conductors GB/T 3048.8-2007 Test methods for electrical properties of electric cables and wires - Part 8. AC voltage test GB/T 3048.11-2007 Test methods for electrical properties of electric cables and wires - Part 11. Test for dielectric dissipation factor GB/T 3048.12-2007 Test methods for electrical properties of electric cables and wires - Part 12. Partial discharge test GB/T 3048.13-2007 Test methods for electrical properties of electric cables and wires - Part 13. Impulse voltage test GB/T 3048.14-2007 Test methods for electrical properties of electric cables and wires - Part 14. DC voltage test GB/T 3880.1-2012 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 1. Technical conditions of delivery GB/T 3953 Round copper wire for electrical purposes GB/T 3956 Conductors of insulated cables GB/T 6995.3-2008 Markings for electric wires and cables - Part 3. Identifications of cables and wires GB/T 18380.12-2008 Test on electric and optical fibre cables under fire conditions - Part 12. Test for vertical flame propagation for a single insulated wire or cable - Procedure for 1kW pre-mixed flame GB/T 18890.1-2015 Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 220 kV (Um = 252 kV) - Part 1. Test methods and requirements GB/T 26011-2010 Lead alloy ingot for cable sheath bond JB/T 5268.1-2011 Metal sheaths for cables - Part 1. General requirement JB/T 8137 (all parts) Delivery drums for wires and cables JB/T 10181.11-2014 Calculation of the current rating of electric cables - Part 1. Current rating equations (100% load factor) and calculation of losses - Section 1. General JB/T 10259 Waterblocking tape for electric cables and optical fiber cables JB/T 10696.5-2007 Test methods for determining mechanical physical and chemical properties of electric cables and wires - Part 5. Corrosion spread test JB/T 10696.6-2007 Test methods for determining mechanical physical and chemical properties of electric cables and wires - Part 6. Test for abrasion of oversheaths YD/T 723-2007 (all parts) Laminated metal plastic strip for communication cable and optical fibre cable IEC 60183 Guidance for the selection of high-voltage a.c. cable systems3 Terms and definitionsThe following terms and definitions and those defined in GB/T 18890.1-2015 apply to this document. 3.1 Approximate value A kind of value that is neither guaranteed nor checked, for example, being used to calculate the value of other sizes. 3.2 Metal-plastic laminated sheath Laminated sheathes of longitudinally-wrapped metal tapes or longitudinally-wrapped metal foils, having a bonding characteristic with power cable’s outer sheathes. YJQ02-Z Power cables with cross-linked polyethylene insulation lead sheath, PVC sheath and longitudinal waterblocking structure YJQ03-Z Power cables with cross-linked polyethylene insulation lead sheath, PE sheath and longitudinal waterblocking structure YJA03 Power cables with cross-linked polyethylene insulation metal-plastic laminated sheath and PE sheath YJA03-Z Power cables with cross-linked polyethylene insulation metal-plastic laminated sheath and longitudinal waterblocking structure NOTE. Corrugated aluminum shea... ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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