1 Scope
This part of GB/T 11017 specifies the basic structure, model designation, technical requirements, test and acceptance rules, packaging, and transportation and storage of accessories for power cables with cross-linked polyethylene insulation for rated voltage of 110 kV (Um = 126 kV).
This part is applicable to outdoor terminations, gas-immersed terminations for GIS, oil-immersed (transformer) terminations, straight joints and sectionalizing joints used for power cables with cross-linked polyethylene insulation for rated voltage of 110 kV (Um = 126 kV) conforming to GB/T 11017.1-2014 under general installation conditions.
This part is not applicable to tape insulated joints, transition joints for connecting power cables with cross-linked polyethylene insulation and paper insulated cables, and detachable cable terminations.
2 Normative references
The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 311.1-2012 Insulation co-ordination — Part 1: Definitions, principles and rules
GB/T 1527-2006 Drawn tube of copper and copper alloys
GB/T 2900.10-2013 Electrotechnical terminology — Electric cables
GB/T 3048.8 Test methods for electrical properties of electric cables and wires — Part 8: AC voltage test
GB/T 3048.12 Test methods for electrical properties of electric cables and wires — Part 12: Partial discharge test
GB/T 3048.13 Test methods for electrical properties of electric cables and wires — Part 13: Impulse voltage test
GB/T 3048.14 Test methods for electrical properties of electric cables and wires — Part 14: DC voltage test
GB/T 4109 Insulated bushings for alternating voltages above 1 000V
GB/T 4423-2007 Copper and copper-alloy cold-drawn rod and bar
GB/T 7354-2003 Partial discharge measurements
GB/T 8287.1-2008 Indoor and outdoor post insulators for systems with nominal voltage greater than 1 000 V — Part 1: Test on insulators of ceramic material or glass
GB/T 11017.1-2014 Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 110 kV(Um=126 kV) — Part 1: Test methods and requirements
GB/T 11017.2-2014 Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 110 kV (Um=126 kV) — Part 2: Power cables
GB/T 12464 Wooden boxes
GB/T 16927.1 High-voltage test techniques — Part 1: General definitions and test requirements
GB/T 21429-2008 Composite insulators — Hollow insulators for use in outdoor and indoor electrical equipment — Definitions, test methods, acceptance criteria and design recommendations
GB/T 22381-2008 Cable connections between gas-insulated metal-enclosed switchgear for rated voltages equal to and above 72.5 kV and fluid-filled and extruded insulation power cables — Fluid-filled and dry type cable-terminations
GB/T 23752-2009 Hollow pressurized and unpressurized ceramic and glass insulators for use in electrical equipment with rated voltages greater than 1 000 V
GB/T 26218.1-2010 Selection and dimensioning of high-voltage insulators intended for use in polluted conditions — Part 1: Definitions, information and general principles
IEC 62271-209:2007 High-voltage switchgear and controlgear — Part 209: Cable connections for gas-insulated metal-enclosed switchgear for rated voltages above 52 kV — Fluid-filled and extruded insulation cables — Fluid-filled and dry-type cable-terminations
3 Terms and definitions
For the purpose of this part, the definitions given in GB/T 2900.10-2013, GB/T 11017.1-2014, IEC 62271-209:2007 and the following apply. For the convenience of application, some terms and definitions in GB/T 2900.10-2013 and GB/T 62271-209:2007 are listed again.
3.1
outdoor termination
termination used exposure to direct sunlight or climatic environment, or both
[GB/T 2900.10-2013, Definition 461-10-14]
3.2
termination with porcelain insulator
(outdoor) cable termination using porcelain insulator as external insulation
3.3
termination with composite insulator
(outdoor) cable termination using glass fiber reinforced epoxy tube as the lining core and composite insulator as external insulation which is made of weather-resistant and pollution-resistant elastomer material (such as silicone rubber)
3.4
gas-immersed termination for GIS
cable termination of gas-insulated part installed in gas-insulated metal-enclosed switchgear (GIS) with sulfur hexafluoride (SF6) as its external insulation
3.5
oil-immersed termination
cable termination of liquid-insulated part installed in the oil tank of oil-immersed transformer equipment with insulating oil as its external insulation
3.6
straight joint
accessories used to connect two cables to form a continuous circuit, which, in this part, refers to the joint whose metal shell is electrically continuous with the metal shield and insulation shield of the connected cable
3.7
sectionalizing joint
joint that keeps metal sheath, metal shield and insulation shield disconnected (uncontinuous) electrically
3.8
pre-fabricated accessories
accessories for power cable using pre-fabricated rubber elements (and prefabricated epoxy insulators) of electric field stress control function as main insulators, including pre-fabricated terminations and pre-fabricated joints
3.9
composite type pre-fabricated joint
joint using pre-fabricated rubber stress cone and pre-fabricated epoxy insulator assembled on site as main insulator
3.10
one piece pre-molded joint
joint using single pre-fabricated rubber insulator as main insulator
3.11
cable termination connection enclosure for GIS
enclosed shell equipped with the cable termination and the main circuit end of the switch in gas-insulated metal-enclosed switchgear
[IEC 62271-209:2007, Definition 3.3]
3.12
design pressure
pressure used to determine the thickness of cable termination connection enclosure for GIS and the termination component structure of GIS under this pressure
[IEC 62271-209:2007, Definition 3.5]
3.13
minimum functional pressure
minimum working pressure of insulation medium expressed by relative pressure or absolute pressure (Pa), when converted to the standard atmospheric condition (20 °C, 101.3 kPa), above or at which, the switchgear and gas-immersed termination for GIS will keep their rated characteristics
[GB/T 11022-2011, Definition 3.6.5.5]
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Service conditions
5 Product designation
6 Technical requirements
7 Accessory marking
8 Tests and requirements
9 Acceptance rules
10 Packaging, transportation and storage
Annex A (Informative) Properties of semi-conductive rubber belt.
Annex B (informative) Properties of cured epoxy resin (adhesive)
Annex C (Informative) Properties of liquid insulating filler
Annex D (informative) Installation guideline
Bibliography
Figure 1 The composition of the model for cable accessories
Table 1 Code of SPS level on the external insulation of outdoor termination
Table 2 Product model and name
Table 3 Test classification, requirements and test methods of accessory components
Table A.1 Properties of semi-conductive rubber belt
Table B.1 Properties of cured epoxy resin (adhesive)
Table C.1 Properties of silicone oil
Table C.2 Properties of polyisobutylene
