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| Add Time： | 2016-08-20 17:15:07 |
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Marine cable: shipboard cable & Marine cable.Shipboard cable is a kind of special wire and cable, it is mainly used for all kinds of ships and floating platform in rivers and lakes, ports and other power supply, control, communication wires.Has the waterproof, flame retardant, corrosion resistance, acid and alkali resistant, soft and easy to bend, etc.Marine cable can also be used in metallurgy, chemical industry, construction and other industries.Can't use material not qualified cable.
Marine cable according to the function can be divided into: Marine communication cable, power cable, Marine control cable, Marine cable, Marine cables, coaxial cable of the ship and shore power cables, etc.
Marine cable according to the insulating materials can be divided into: rubber insulation Marine cable, PVC insulated Marine cable, cross-linked polyethylene insulation shipboard cable, etc.
Ship power system, selection of each cable in the steps and principles
1, according to cable location of use, selecting the appropriate cable type and working conditions.
2, according to the work of electrical equipment, power supply and load current is to choose the appropriate type, cable core cable.
Fragments of 3, based on the system short circuit current calculation results, the short circuit capacity whether meet the requirements of the cable.
4, according to the environment temperature to modify the rated carrying capacity of the cable, and then determine whether cable allows current is greater than the load current.
5, according to a bunch of laying correction coefficient, to modify the rated carrying capacity of the cable, then, to determine whether cable allows current is greater than the load current.
6, check the line voltage drop, whether line drop less than the specified value.
7, according to the set values for the protection of, whether cable and protective device coordination;If not harmonious, determine whether can change the set values for the appropriate protection or, otherwise, should be to choose the appropriate cable surface.
Marine cable type selection
Marine cable type selection should consider the following factors:
1, the use of the cable - used for power, lighting and radio communication, etc.
2, cable laying position - dry, wet, low temperature and whether to block, etc.
3, working conditions, fixed installation, tube wear number and mobile, etc.
