JB/T 10636-2006 English PDF (JBT10636-2006)

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JB/T 10636-2006: Copper-conductor extruded plastic insulated cables with pre-fabricated branches for rated voltage of 0.6/1kV (Um=1.2kV)
JB/T 10636-2006
JB
MECHINERY INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 29.060.20
K 13
Report No.: 19065-2006
Copper-Conductor Extruded Plastic Insulated Cables
with Pre-Fabricated Branches for Rated Voltage of
0.6/1kV (Um=1.2kV)
ISSUED ON: OCTOBER 14, 2006
IMPLEMENTED ON: APRIL 01, 2007
Issued by: National Development and Reform Commission of PRC
Table of Contents
Foreword ... 4
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 7
4 Model and Specification ... 9
4.1 Symbol and code ... 9
4.2 Product representation method ... 9
4.3 Model ... 10
4.4 Specification ... 10
5 Technical Requirements ... 11
5.1 Cable ... 11
5.2 Pre-fabricated branch-jointer ... 12
5.3 Device for hanging ... 16
5.4 Identification mark ... 16
6 Test of the Finished Cable... 16
7 Test Method ... 16
7.1 Conductor continuity (conduction) ... 16
7.2 Tensile strength of conductor after compression connection ... 17
7.3 Structure test of the branch-jointer ... 17
7.4 Water immersion voltage test or spark test for branch-jointer ... 18
7.5 Water immersion voltage test of branch-jointer ... 18
7.6 Water immersion insulation resistance test of branch-jointer... 19
7.7 Thermal cycle test of branch connection fittings ... 19
7.8 Vertical combustion test of branch-jointer ... 19
7.9 Water immersion voltage test or spark test of device for hanging... 19
7.10 Static load test of device for hanging ... 20
7.11 Water immersion voltage test of device for hanging ... 20
7.12 Water immersion insulation resistance test of device for hanging ... 20
7.13 Scratch resistance of identification marks ... 20
8 Acceptance Rules ... 21
9 Marking and Packaging ... 21
9.1 Packaging ... 21
9.2 Marking ... 22
Appendix A (Informative) Reference Size of C-Shaped Connector for Conductor
... 23
A.1 Scope of application ... 23
A.2 Reference size of C-shaped connector for conductor ... 23
Appendix B (Informative) Injection Molding Material for Insulation of Branch-
Jointer ... 25
B.1 Performance requirements of injection moulding material for insulation of
branch-jointer ... 25
B.2 Cut the injection moulding material from the finished branch-jointer for test
... 25
Appendix C (Normative) Thermal Cycle Test of Branch Connection Fittings . 27
C.1 Selection of test samples ... 27
C.2 Test environmental conditions ... 27
C.3 Specimen layout ... 27
C.4 Main test equipment ... 27
C.5 Preparation of specimen ... 27
C.6 Test ... 28
C.7 Test evaluation ... 28
Copper-Conductor Extruded Plastic Insulated Cables
with Pre-Fabricated Branches for Rated Voltage of
0.6/1kV (Um=1.2kV)
1 Scope
This Standard specifies the product structure, technical requirements, cable test,
acceptance rules, marking and packaging of copper-conductor extruded plastic
insulated cables with prefabricated branches for a rated voltage of 0.6kV/1kV.
This Standard is applicable to cables with prefabricated branches used in air-laid
buildings and supply mains for rated voltages of 0.6kV/1kV and below; and cables with
prefabricated branch for illumination of tunnels and bridges, as well as for other similar
purposes.
2 Normative References
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For dated references, the subsequent amendments
(excluding corrigendum) or revisions do not apply to this Standard, however, parties
who reach an agreement based on this Standard are encouraged to study if the latest
versions of these documents are applicable. For undated references, the latest edition
of the referenced document applies.
GB/T 1040-1992 Plastics - Determination of Tensile Properties
GB/T 1408.1-1999 Methods of Test for Electric Strength of Solid Insulating
Materials -Tests at Power Frequencies (eqv IEC 60243-1:1988)
GB/T 1410-2006 Methods of Test for Volume Resistivity and Surface Resistivity
of Solid Electrical Insulating Materials (IEC 60093:1980, IDT)
GB/T 2406-1993 Plastics - Determination of Flammability by Oxygen Index (neq
ISO 4589:1984)
GB/T 2900.10 Electrotechnical Vocabulary - Electric Cables (GB/T 2900.10-2001,
idt IEC 60050(461):1984)
and Conductivity (GB/T 17650.2-1998, idt IEC 60754-2:1991)
GB/T 18380.1 Tests on Electric Cables under Fire Conditions - Part 1: Test on a
Single Vertical Insulated Wire or Cable (GB/T 18380.1-2001, idt IEC 60332-
1:1993)
GB/T 18380.3 Tests on Electric Cables under Fire Conditions - Part 3: Tests on
Bunched Wires or Cables (GB/T 18380.3-2001, idt IEC 60332-3:1992)
GB/T 19216.21-2003 Tests for Electric Cables under Fire Conditions - Circuit
Integrity - Part 21: Procedures and Requirements - Cable of Rated Voltage up to
and Including 0.6/1.0 kV (IEC 60331-21:1999, IDT)
JB/T 8137.1~8137.4 Delivery Drums for Electric Wires and Cables
IEC 60332-3 Tests on Electric and Optical Fibre Cables under Fire Conditions –
Part 3: Burning Test Method for Bundled Wires or Cables
3 Terms and Definitions
For the purposes of this Standard, the terms and definitions given in GB/T 2900.10
and the following apply.
3.1 Cable with pre-fabricated branches
The cables with pre-fabricated branches are a complete and continuous set of cables
pre-fabricated by the factory. At the specified positions and requirements of the trunk
cable, the conductors of the trunk cable and the branch cable are compressed and
connected by copper or copper alloy tubes; and perform the complete insulation
treatment. When laying vertically, the upper end has a suitable device for hanging;
when laying horizontally, the traction member can be optional. The cable end at the
device for hanging or traction mechanism shall also have a complete insulation
treatment.
3.2 Branch-jointer
The sealed components that the conductors of trunk and branch cables are
compressed and connected by copper or copper alloy tubes and perform the complete
insulation treatment.
3.3 “C” shaped connector for conductors
A device that is used to connect conductors of cables with prefabricated branches. Its
cross-section is like a C-shaped copper or copper alloy connecting tube, which
facilitates the snap-in and compression connection of the conductors of trunk and
Um is the highest allowable working voltage of the cable, and the unit is kV.
NOTE: The working voltage of the system is allowed to exceed 10% of the nominal voltage of
the system for a long time. If the rated voltage of the cable is at least equal to the nominal
voltage of the system, the cable can be used at a working voltage higher than 10% of the rated
voltage.
4 Model and Specification
4.1 Symbol and code
Serial codes:
Cable with pre-fabricated branches: FZ;
Classify according to the characteristics:
Copper conductor: ignored;
Polyvinyl chloride: V;
Crosslinked polyethylene: YJ;
Polyethylene (polyolefin): Y;
Codes of combustion characteristics:
Flame-retardant: Z;
Fire-resistant: N;
Halogen-free: W;
Low-smoke: D.
4.2 Product representation method
Products are represented by model, specification and standard number; and
specification include rated voltage, the number of cores, and conductor cross-sectional
area, etc. In order to facilitate to distinguish the cross-sectional area specifications of
the trunk cable and the branch cable, use the symbol "/" to separate the former and
the latter.
Example:
...