Professional production of CEFRP marine shielded rubber sheathed flexible cables

Professional productionCeFRP marine shielded rubber sheathed flexible cable

1 Introduction

Marine cable, also known as marine power cable, is a type of wire and cable used for power, lighting, and general control of various ships and offshore oil platforms in rivers and seas.
Main application: Used for power, lighting, and general control of various ships in rivers and seas, as well as offshore oil platforms and other water structures.
Execution standard: Execution standard for marine power cables:IEC60092-350，IEC60092-353orGB9331-88.
The main parameters of marine power cables include model specifications, number of cores, combustion characteristics, rated voltage, temperature, and nominal cross-sectional area.
2 classification
In terms of types, marine cables can be divided into two categories: civilian ship wires and cables, and military ship wires and cables.
In terms of usage, marine cables can be divided into three categories: ship cables/Ship power cables, ships/Naval control cables, ships/Ship communication cables. Their functions are:
Marine power cables: used for power, lighting, and general control of various ships in rivers and seas, as well as offshore oil platforms and other water structures.
Marine control cable: used for general control of various ships and offshore oil platforms in rivers and seas.
Marine communication cables: used for signal transmission and control systems in various communication systems, electronic computers, and information processing equipment.

Professional production of CeFRP marine shielded rubber sheathed flexible cables

3 Selection Principle
Steps and principles for selecting cables in ship power systems
1Choose the appropriate cable model based on the purpose, laying location, and working conditions of the cable.
2、 Select the appropriate cable cross-section based on the working system of the electrical equipment, the type of power supply, the cable core, and the load current.
3According to the calculation results of the system short-circuit current, whether the short-circuit capacity of the fragmented cable meets the requirements.
4、 Adjust the rated current carrying capacity of the cable based on the ambient temperature, and then determine whether the allowable current of the cable is greater than the load current.
5、 According to the bundle laying correction factor, the rated current carrying capacity of the cable is corrected, and then the allowable current of the cable is determined to be greater than the load current.
6Verify the voltage drop of the circuit and determine if it is less than the specified value.
7Based on the setting value of the protective device, determine whether the cable is coordinated with the protective device; If there is no coordination, determine whether it is possible to change the appropriate protective device or setting value, otherwise a suitable cable load surface should be re selected.
Selection of Marine Cable Models
The selection of marine cable models should consider the following factors:
1The purpose of the cable———Used for power, lighting, and wireless communication.
2Cable laying location———Dry, humid, low temperature, and whether shielding is required.
3Working conditions———Fixed installation, installation of pipes, and mobility.