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 22 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 GB3048.5~3048.6bzxz.net 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 Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.