Marine cable quality judgment methods are those?

From the point of view of use, marine cables can be divided into ship/ship power cables, ship/ship control cables and ship/ship communication cables three categories. Its function is: Marine power cables: used for power, lighting and total control of various ships in the river, sea and offshore oil routes. Marine control cables: used for river and sea, offshore oil route and other water buildings in a variety of ships in the total control; marine communication cables: used for a variety of communications, electronic computers and information processing equipment in the signal transmission and control system. Judgment method of marine cable: 1. According to the use of the cable, laying position and working conditions to choose the appropriate cable type. 2. According to the working system of electrical equipment, power supply type, cable core and load current to choose the appropriate cable cross-section. 3. According to the results of the system short-circuit current calculations, the short-circuit capacity of the segmented cable to meet the requirements. 4. According to the ambient temperature to correct the cable's rated current-carrying capacity, and then Judge whether the allowable current of the cable is greater than the load current.5. Correct the rated current-carrying capacity of the cable according to the correction coefficient of bundled laying, and then judge whether the allowable current of the cable is greater than the load current.6. Check the line voltage drop, and judge whether the line voltage drop is less than the specified value.7. Judge whether the cable is cooperating with the protective device according to the setting value of the protective device; when it is not consistent, judge whether it is possible to change the appropriate protection device or setting value, otherwise the suitable cable bearing surface should be selected from scratch.

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