GB 12972.5-1991 Mining rubber-sheathed flexible cables Part 5: Mobile rubber-sheathed flexible cables with rated voltage 0.66/1.14 kV and below

This standard specifies product varieties, technical requirements, test methods and inspection rules for mobile rubber-sheathed flexible cables with rated voltage 0.66/1.14kV. This standard applies to copper core rubber insulated rubber sheathed flexible cables for mobile equipment with a rated voltage of 0.66/1.14kV and below. This standard should be used together with GB l2972.1. GB 12972.5-1991 Rubber-sheathed flexible cables for mining use Part 5: Mobile rubber-sheathed flexible cables with rated voltage 0.66/1.14 kV and below GB12972.5-1991 Standard download and decompression password: www.bzxz.net

National Standard of the People's Republic of China
Rubber-sheathed flexible cables for mining
Part 5: Mobile rubber-sheathed flexible cables with rated voltage 0.66/1.14kV and below
Flexible rubber-sheathed cables for mining purposesPart5Flexiblecablesforratedvoltageupto0.66/1.14kvSubject content and scope of application
GB12972.5-91
Replaces GB1170-74
This standard specifies the rated voltage 0.66/1.14kV mobile rubber sheathed flexible cable Product varieties, technical requirements, test methods and inspection rules. This standard applies to copper core rubber insulated rubber sheathed flexible cables for mobile equipment with a rated voltage of 0.66/1.14kV and below. This standard should be used together with GB12972.1. 2 Usage characteristics
2.1 Rated voltage U./U are 0.38/0.66 and 0.66/1.14kV respectively. 2.2 The long-term allowable operating temperature of cable conductors is 65°C. 2.3 The minimum bending radius of the cable is 6 times the cable diameter. 2.4 Yellow-sheathed cables must not be exposed to sunlight for a long time. 3 model
cable models are shown in Table 1.
Table 1
UY-0.38/0.66
UYP-0.38/0.66
UYP-0.66/1.14| |tt||Name
Mobile rubber-sheathed flexible cable for mining
Mobile shielded rubber-sheathed flexible cable for mining
Mobile shielded rubber-sheathed flexible cable for mining| |tt||3.2 cable type as shown in Figure 1.
State Bureau of Technical Supervision approved on 1991-06-06
purpose
Rated voltage 0.38/0.66kV power connection for various underground mobile coal mining equipment
rated voltage 0.38/0.66kV Power supply connection for various underground mobile coal mining equipment
Rated voltage 0.66/1.14.kV Power supply connection for various underground mobile coal mining equipment
Implemented on 1992-03-01||tt ||4 specifications
UYP-0.38/0.66
UYP-0.66/1.14
GB12972.5—91
Figure 1
UY-0.38/ 0.66
1—power core conductor; 2 filling; 3—insulation; 4—insulation shield; 5—ground core conductor; 6—outer sheath
Cable specifications should comply with Table 2a and Table 2 2b regulations. Cable specifications should comply with Table 2a and Table 2b. Table 2a
Outer diameter of cable
Number of cores × nominal conductor cross-section, mm2
Power core
Ground core
3×4|| tt||3×6
3×50||tt| |3×70
1 ×16
power core
insulated
nominal thickness
1.4|| tt||1.4
Sheath mark|| tt||Thickness
5.0||tt ||5.0
UY-0.38/0.66
minimum value
Maximum
33.4| |tt||39.8
UYP-0.38/0.66
Minimum||tt| |23.7
Max Value
57.1| |tt||Number of cores × nominal conductor cross-section, mm2
Power wire core
3×25||tt| 3×35
5 technical requirements
ground core
1× 10
GB 12972.5-91
Table 2b
Power wire core
Insulation
Nominal thickness
5.1 The technical requirements of cables should comply with Table 3 and Table 4. 5.2 Single wires in conductors are allowed to be tinned. The surface of the conductor can be covered with an isolation layer. Note: Discoloration or brittleness of the isolation layer after vulcanization will not be assessed. 5.3 Insulation
Sheath mark
Weighing thickness
5.5||tt ||5.5
5.3.1 The insulation of the power wire core should comply with the XJ-00A regulations in GB7594.2. 5.3.2 If the ground core has an insulating coating, it should comply with the XJ-00A regulations in GB7594.2. 5.3.3 The insulation shield adopts the Class A structure in Table 5 of GB12972.1. 5.4 Cable core
5.4.1 The position of the ground core complies with the requirements of GB12972.1 Article 7.4b. 5.4.2 The stranded pitch diameter ratio of the cable core should not be greater than: power wire core cross-section 4~16mm
power wire core cross-section 25~95mm
5.5 sheath
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5.5.1 If there is a rubber inner sheath, it should not be lower than the XJ-02A requirements in GB7594.6. Cable outer diameter
UYP-0.66/1.14
minimum value
5.5.2 The outer sheath rubber should comply with the XH-03A requirements in GB7594.7, but the tear strength should not be less than 7.5N/mm. Table 3
Nominal cross-section of power wire core
25| |tt||Insulation resistance at 20℃
Mn·km minimum value
120| |tt||Power wire core nominal cross-section
mm||tt| |Maximum
Insulation resistance at 20℃
MQ·km minimum value
80||tt| |6 Testing and Inspection Rules
Products are tested as specified in Table 4.
Serial number
1.6|| tt||2
2.7||tt| |2.8
Project name
Structural dimensions
Conductor
Insulation thickness||tt ||Shielding layer
Cable core
Sheath thickness
Cable outer diameter
Cable performance
Conductor resistance
Insulation resistance|| tt||Transition resistance
Power frequency AC voltage
Burning test
Mechanical impact test
Extrusion test
Insulation physics Mechanical
Performance
Sheath physical machinery
Performance
Identification mark
Delivery length
GB12972.5-91||tt ||Table 4
Technical requirements
GB12972.1 Article 4.1 and this standard Article 5.2 GB12972.1 Article 5.2 and this standard Table 2a and Table 2b this standard Article 5.3.3| |tt||GB12972.1 Article 7 and this standard Article 5.4 GB12972.1 Article 8 and this standard Table 2a and Table 2b this standard Table 2a and Table 2b
GB12972.1 Table 1||tt ||Table 3 of this standard
GB12972.1 Article 11.4
(not applicable to UY-0.38/0.66)
GB12972.1 Table 8
GB12972.1 Article 11.6
16~35mm2*2 times
50~95mm2..3 times
UY-0.38/0.66 and UYP-0.38/0.66***30kNUYP-0.66 /1.1440kN
Article 5.3 of this standard
Article 5.5 of this standard
Article 10 of GB12972.1
Article 11.12 of GB12972.1
Note: St means periodic testing, which should be conducted at least once a year. Additional notes:
This standard is proposed by the Ministry of Mechanical and Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of the Shanghai Cable Research Institute of the Ministry of Mechanical and Electronic Industry. Test type
T,St|| tt||T,St
Test method
GB4909. 2
Visual inspection
Hanging visual inspection
GB3048.4| |tt||GB3048.5
GB12972.1 Appendix D
GB12666.2
GB12972.1 Appendix A
GB12972. 1Appendix B
GB2951
GB2951
GB6995
Meter Counter
This standard was approved by the Shanghai Cable Research Institute of the Ministry of Mechanical and Electronic Industry and the General Administration of Coal Research Fushun Branch of the hospital and other units are responsible for drafting. The main drafters of this standard are Liu Fenglin and Tang Kaizong.
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