title>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 - GB 12972.5-1991 - Chinese standardNet - bzxz.net
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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
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Standard ID:
GB 12972.5-1991
Standard Name: 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
Some standard content:
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 characteristicsbzxZ.net 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 3.1 cable models are shown in Table 1. Table 1 Type No. UY-0.38/0.66 UYP-0.38/0.66 UYP-0.66/1.14| |tt||Name 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 3×10 3×16 3×25 3×35 3×50||tt| |3×70 1×4 1×6 1×10 1×10 1×16 1 ×16 1x16 1x25 power core insulated edge nominal thickness 1.4|| tt||1.4 1.6 1.6 1.8 1.8 2.0 2.0 Sheath mark|| tt||Thickness 3.5 3.5 4.0 4.0 4.5 4.5 5.0||tt ||5.0 UY-0.38/0.66 minimum value 20.3 23.0 27.5 29.6 35.6 38.7 43.6 49.7 Maximum 23.4 26.4 31.3 33.4| |tt||39.8 42.9 47.9 54.4 mm UYP-0.38/0.66 Minimum||tt| |23.7 26.4 30.9 33.0 39.0 42.1 47.1 52.4 Max Value 27.2 30.1 34.7 36.8 43.2 46.3 51.4 57.1| |tt||Number of cores × nominal conductor cross-section, mm2 Power wire core 3×10 3×16 3×25||tt| 3×35 3×50 3×70 3×95 5 technical requirements ground core 1× 10 1×10 1×16 1x16 1x16 1×25 1×25 GB 12972.5-91 Table 2b Power wire core Insulation Nominal thickness 1.8 1.8 2.0 2.0 2.2 2.2 2.4 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 4.5 4.5 5.0 5.0 5.5||tt ||5.5 6.0 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 ... .... ..·12 .14 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 32.4 34.6 41.1 44.2 49.1 55.5 61.2 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 mm2 4 6 10 16 25| |tt||Insulation resistance at 20℃ Mn·km minimum value 200 180 160 120 120| |tt||Power wire core nominal cross-section mm2 35 50 70 95 mm||tt| |Maximum 36.2 38.4 45.3 48.4 53.4 60.2 65.9 Insulation resistance at 20℃ MQ·km minimum value 100 100 80 80||tt| |6 Testing and Inspection Rules Products are tested as specified in Table 4. Serial number 1 1.1 1.2 1.3 1.4 1.5 1.6|| tt||2 2.1 2.2 2.3 2.4 2.5 2.6 2.7||tt| |2.8 2.9 3 4 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 Test 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,s T,s T,s T,s T,s T,s T,R T,R T,s T,R T,St T,St|| tt||T,St T,St T,St T,st R Test method GB4909. 2 GB2951.2 Visual inspection Hanging visual inspection GB2951.3 GB2951.4 GB3048.4| |tt||GB3048.5 GB12972.1 Appendix D GB3048.8 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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