GB 12971.5-1991 Contact wire for electric traction Part 5: Aluminum alloy contact wire

This standard specifies the product varieties, specifications, technical requirements and inspection rules for aluminum alloy contact wires. This standard applies to aluminum alloy contact wires used in electrical transportation and lifting systems such as railways, industry, mining, and urban transportation. In addition to complying with the requirements of this standard, aluminum alloy contact wires should also comply with the provisions of GBl2971.1. GB 12971.5-1991 Contact wire for electric traction Part 5: Aluminum alloy contact wire GB12971.5-1991 Standard download and decompression password: www.bzxz.net

National Standard of the People's Republic of China
Contact wires for electric traction
Part 5: Aluminum alloy contact wires
Trolley and contact wires for electric tractionPart 5:Aluminum alloy trolley and contact wiresTheme content and scope of application
This standard specifies the product varieties, specifications, technical requirements and inspection rules for aluminum alloy contact wires. GB12971.5—91
This standard is applicable to aluminum alloy contact wires used in electrical transportation and lifting systems such as railways, industry, mining, and urban transportation. In addition to complying with the requirements of this standard, aluminum alloy contact wires should also comply with The provisions of GB12971.1. 2 Model bzxz.net
Aluminum alloy contact wire models are shown in Table 1.
Table 1
3 Specifications
Aluminum alloy contact wire specifications are as specified in Table 2.
nominal
section
calculation
section| |tt||mm
Equivalent copper
Resistive cross-section
Table 2
Dimensions and deviations, mm||tt ||C
(±2%)(±1%)
(±2%)
16.64||tt| |13.48
Approved by the State Bureau of Technical Supervision on 1991-06-06 9.55
D|| tt||(%)
Heat treated aluminum magnesium silicon rare earth alloy contact Line
(±2%)
H||tt ||Deviation ±2°
2.670.3827°
nominal
weight
460||tt ||540
Section
And ruler
Picture 1
Implemented on 1992-03-01||tt| |4Materials
4.1 Aluminum should comply with GB1196 regulations.
4.2 Magnesium should comply with the Mg-2 regulations in GB3499. 4.3 Crystalline silicon should comply with the Si-2 regulations in GB2881. GB12971.5—91
Figure 1
4.4 Rare earths should comply with the RECe-45 regulations in GB4153. 5 Technical requirements
5.1 Dimensions and deviations
The dimensions and deviations of aluminum alloy contact wires should comply with the requirements in Table 2. 5.2 Mechanical properties
The mechanical properties of aluminum alloy contact wires should comply with the requirements in Table 3. 5.3 Resistivity
The resistivity of aluminum alloy contact wires should comply with the requirements in Table 3. Table 3
Nominal cross-section
Breaking force, N)
Not less than
Note: 1) The gauge length during the test is 250mm. 5.4 Manufacturing length and joint
elongation, %\
is not less than
resistance at 20℃ Rate, Qmm/m
is not greater than
5.4.1 The manufacturing length of the aluminum alloy contact wire should be not less than 1800m, No joints are allowed within the manufacturing length. 180° repeated twisting
(once each)
no breakage and cracking
no breakage and cracking
no breakage and cracking
5.4.2 Aluminum Alloy Contact wires are allowed to be delivered in short sections with a length of not less than 500m, and their quantity should not exceed 5% of the total delivery weight. 3 According to the agreement between the parties, aluminum alloy contact wires are allowed to be delivered in any length and short sections. 5.4.3
6 Inspection Rules
Products are inspected as specified in Table 4.
Serial number
7|| tt||8
Project name
Dimensions and deviations
Breaking force
Elongation
Torsion
Resistivity|| tt | Key Techniques
Conform to the provisions of Table 2 of Article 5.1 of this standard
Conform to the provisions of Table 3 of Article 5.2 of this standard
Conform to the provisions of Table 3 of Article 5.2 of this standard
Conform Table 3 of Article 5.2 of this standard
Conforms to Table 3 of Article 5.3 of this standard
Conforms to Article 4.2 of GB12971.1
Conforms to Article 5.4 of this standard||tt ||Conforms to Article 5.4 of this standard
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 Shanghai Cable Research Institute. This standard was drafted by Shanghai Cable Research Institute and Wuhan Electric Wire Factory. The main drafter of this standard is Wang Xueping.
Test type
T,S||tt ||R
Test method
GB4909.3||tt| |GB4909.4
Normal visual inspection
Measure with meter counter
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