GB/T 29631-2013 English PDF (GBT29631-2013)

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GB/T 29631-2013: Flexible and torsion resistant cables of rated voltages up to and including 1.8/3 kV for wind turbine
GB/T 29631-2013
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.060.20
K 13
Flexible and torsion resistant cables of rated voltages
up to and including 1.8/3 kV for wind turbine
ISSUED ON: JULY 19, 2013
IMPLEMENTED ON: DECEMBER 02, 2013
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of PRC;
Standardization Administration of PRC.
Table of Contents
Foreword ... 4 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 7 
4 Characteristics of use ... 8 
5 Code, cable model, representation of product ... 9 
6 Cable’s specifications ... 11 
7 Technical requirements ... 11 
8 Finished cable ... 17 
9 Inspection rules and test methods ... 20 
10 Delivery length ... 22 
11 Packaging, transportation, storage of cable ... 22 
Appendix A (Normative) Performance requirements for insulation and sheathing
materials for twist-resistant flexible cables for wind turbine ... 24 
Appendix B (Normative) Torsional test method for twist-resistant flexible cable
for wind turbine ... 27 
Appendix C (Normative) Load test method of twist-resistant flexible cable for
wind turbine ... 30 
Appendix D (Normative) Test method for bending at low-temperature for twist-
resistant flexible cable for wind turbine ... 31 
Appendix E (Normative) Artificial weather aging test method for twist-resistant
flexible cable for wind turbine ... 32 
Appendix F (Normative) Salt spray test ... 35 
Flexible and torsion resistant cables of rated voltages
up to and including 1.8/3 kV for wind turbine
1 Scope
This standard specifies the product code, marking, technical requirements,
inspection rules, test methods and packaging for the flexible and torsion
resistant cables of rated voltages up to and including 1.8/3 kV for the connection
between turbine and tower or similar applications for wind turbine.
This standard applies to flexible and torsion resistant cables of rated voltages
U0/U up to and including 1.8/3 kV for wind turbine.
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 standard.
GB/T 2423.17-2008 Environmental testing for electric and electronic
products - Part 2: Test method - Test Ka: Salt mist
GB/T 2423.18-2012 Environmental testing - Part 2: Test methods - Test Kb:
Salt mist, cyclic (sodium chloride solution)
GB/T 2900.10-2001 Electrotechnical vocabulary - Electric cables
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
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 ageing methods
GB/T 2951.14-2008 Common test methods for insulating and sheathing
materials of electric and optical cables - Part 14: Methods for general
application - Test at low temperature
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
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 3048.4-2007 Test methods for electrical properties of electric cables
and wires - Part 4: Test of DC resistance of conductors
GB/T 3048.5-2007 Test methods for electrical properties of electric cables
and wires - Part 5: Test of insulation resistance
GB/T 3048.8-2007 Test methods for electrical properties of electric cables
and wires - Part 8: AC voltage test
GB/T 3048.9-2007 Test methods for electrical properties of electric cables
and wires - Part 9: Spark test of insulated cores
GB/T 3048.13-2007 Test methods for electrical properties of electric cables
and wires - Part 13: Impulse voltage test
GB/T 3956-2008 Conductors of insulated cables
GB/T 4909.2-2009 Test methods for bare wires - Part 2: Measurement of
dimensions
GB/T 5013.1-2008 Rubber insulated cables of rated voltages up to and
including 450/750 V - Part 1: General requirements
GB/T 6995.1-2008 Markings for electric wires and cables - Part 1: General
requirements
GB/T 6995.3-2008 Markings for electric wires and cables - Part 3:
Identifications of cables and wires
GB/T 6995.4-2008 Markings for electric wires and cables - Part 4:
Identifications of insulated conductors of cables and wires for electrical
appliances and equipment
GB/T 9330.1-2008 Plastic insulated control cables - Part 1: General
requirements
GB/T 12706.1-2008 Power cables with extruded insulation and their
accessories for rated voltages from 1 kV (Um = 1.2 kV) up to 35 kV (Um =
40.5 kV) - Part 1: Cables for rated voltage of 1kV (Um = 1.2 kV) and 3kV
(Um = 3.6 kV)
GB/T 18380.12-2008 Test on electric and optical fiber cables under fire
conditions - Part 12: Test for vertical flame propagation for a single insulated
wire or cable - Procedure for 1 kW pre-mixed flame test
GB/T 18380.35-2008 Tests on electric and optical fiber cables under fire
conditions - Part 35: Test for vertical flame spread of vertically-mounted
bunched wires or cables - Category C
JB/T 8137 (all parts) Delivery drums for electric wires and cables
JB/T 10696.7-2007 Test methods for determining mechanical physical and
chemical properties of electric cables and wires - Part 7: Tear test
3 Terms and definitions
The terms and definitions as defined in GB/T 2900.10-2001 as well as the
following terms and definitions apply to this document.
3.1
Rated voltage
The reference voltage used for the design, use, electrical performance
testing of cables.
3.2
Batch
The number of products of the same model specifications that are ordered
at one time.
Note: If there are different models of products in one order, different model
specifications are considered as different batches.
3.3
Routine tests
Tests performed by the manufacturer on all manufacturing lengths of the
finished cable, to verify that all cables meet the specified requirements.
3.4
Sample tests
Copper-core ethylene-propylene rubber insulated polyurethane elastomer
sheathed cold-resistant twist-resistant flexible cable for wind turbine, which
has a rated voltage of 0.6/1 kV, (3 + 1) core, nominal cross-sectional area of
10 mm2, cross-sectional area of neutral line of 6 mm2, is expressed as:
FDEU-40 0.6/1 3 × 10 + 1 × 6 GB/T 29631-2013
Example 2:
Copper-core ethylene propylene rubber insulated neoprene rubber sheathed
flame-retardant flexible category-C cable for wind turbine, which has a rated
voltage of 450/750 V, 1 core, nominal cross-sectional area of 95 mm2, is
expressed as:
ZC-FDEF-25 450/750 1×95 GB/T 29631-2013
Table 1 -- Commonly used models and names of cables
Model a Rated voltage Name
FDEF-25
450 / 750 V
Copper-core ethylene-propylene rubber-insulated neoprene rubber-sheathed
twist-resistant flexible cable for wind turbine
FDEF-40 Copper-core ethylene-propylene rubber-insulated neop...