JB/T 8143.4-1995 Marine RF Cable Rated Impedance 75Ω Copper JB/T8143.4-1995 Standard Download Decompression Password: www.bzxz.net

JB4732-1995
National Standard of the People's Republic of China
Shipboard radio-frequency cables with PTFE insulated copper clad, steel conductor rated characteristic impedance 752GB9334.5—88
This standard adopts the provisions of IEC92-373 "Shipboard Communication Cables and Radio Frequency Cables Shipboard Soft Coaxial Cables" and IEC96 "Radio Frequency Cables".
1 Scope of Application
1.1 This standard applies to silver-plated copper-clad steel conductor solid core polytetrafluoroethylene insulation and sheathed glass fiber braided silicone varnished shipboard coaxial radio frequency cables used for signal transmission on various river and sea vessels and offshore oil platforms and other water structures. 1.2 In addition to complying with the provisions of this standard, the product shall also comply with the requirements of GB9334.1 "General Provisions for Shipboard Radio Frequency Cables".
2 Usage characteristics
2.1 Rated impedance is 750.
2.2 Rated capacitance, as specified in Table 1.
2.3 Rated speed ratio, as specified in Table 1.
2.4 Maximum AC voltage for continuous use, as specified in Table 1. 2.5 Maximum working voltage for unidirectional pulse, as specified in Table 1. 2.6 Minimum bending radius during installation, as specified in Table 1. 2.7
Minimum allowable temperature during bending, as specified in Table 1. Table 1
Product specifications
75-7-11
Note: D
3 Model
Outer diameter of cable.
3.1 The model of the product is shown in Table 2.
3.2 The type of the product is shown in Figure 1.
Maximum AC voltage Maximum pulse voltage
kV peak
Approved by the State Machinery Industry Commission on May 23, 1988 22www.bzxz.net
kV peak
Bending radius, mm
Bending temperature
Implemented on January 1, 1989
4 Specifications
GB9334.5-88
Silver-plated copper clad steel core PTFE insulation PTFE sheath Glass fiber braided sheath Marine coaxial RF cable 2
1-Inner conductor; 2-Insulation; 3-Outer conductor; 4-Sheath; 5--The specifications of glass fiber braided cable are as specified in Table 3.
75-7-11
5 Technical requirements
Inner conductor
Silver-plated copper clad
Steel wire grade 1
Insulation, mm
Outer conductor material
Minimum nominal Maximum
Minimum nominal quantity
7/0.451.96
The product technical requirements shall comply with the provisions of Table 4.
Project name
Structural dimensions
Non-metallic sheath
Braided layer
Cable outer diameter
Electrical properties
Conductor resistivity
Insulation resistance
7.107.257.40
Technical requirements
Comply with the provisions of Table 3 and Table 4 of Article 5 of GB9334.1Comply with the provisions of Table 3 of this standard
Comply with the provisions of Article 7 of GB9334.1 and Table 3 of this standardComply with the provisions of Article 7.3 of GB9334.1||tt ||Comply with the provisions of Table 3 of this standard
Comply with the provisions of Article 5 of GB9334.1
Comply with the provisions of Article 8.3 of GB9334.1
Set, mm
Minimum nominal
Minimum nominal maximum
To be determined To be determined
To be determined To be determined To be determined
Calculated weight
Test method
Article 7.5 of GB9334.1
GB3048.5~3048.6
Project name
Voltage test||t t||Corona test
Attenuation constant
Characteristic impedance
Mechanical and physical properties
Heating winding test
High temperature and then cold bending test
Low temperature bending test
Identification mark
Cable surface
6 Test
GB9334.5—88
Continued Table 4
Technical requirements
Comply with the provisions of Article 8.4 of GB9334.1
Corona extinguishing voltage is not less than 3.4kV
Not too large At 0.105dB/m200MHz
Minimum 720, maximum 782
Conform to Article 8.10 of GB9334.1
Conform to Article 8.11 of GB9334.1
Conform to Article 8.12 of GB9334.1
Conform to Article 8.14 of GB9334.1
Conform to Article 7.2 of GB9334.1
Conform to Article 7.3 of GB9334.1
The product shall be tested as specified in Table 4.
Additional Notes:
This standard is under the jurisdiction of Shanghai Cable Research Institute. This standard was drafted by Shanghai Cable Research Institute, etc. The drafters of this standard are Lu Qisong, Jiang Guangshu and Ou Xuecheng. 24
Test method
GB6995
Visual inspection
Visual inspection
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