GB/T 18890.2-2015 PDF English
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Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 220 kV (Um = 252 kV) - Part 2: Power cables
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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
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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 Contents
Foreword ... 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 ... 28
Foreword
GB/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 cables
1 Scope
This 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 references
The 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 systems
3 Terms and definitions
The 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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