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Must be know nine points of wire and cable

Information Source:Henan Huadong Cable Co., Ltd Release date:2014-02-21

1,Classification of insulated wire

Answer: insulated wires often are the following: PVC insulated wires, PVC insulated flexible wire, PVC nitrile mixture of insulated cords, rubber insulated wire, buried underground agricultural plastic insulated aluminum wire, rubber insulation cotton textile cord, PVC insulated nylon sheathed wires, PVC insulated power and lighting cord etc..

2, Cable tray is suitable for what occasion?

Answer: cable tray applies to general industrial and mining enterprises inside and outside of overhead power cable, control cable, can be used for telecommunications, radio and television sector in the indoor and outdoor set up.

3,Type of cable accessories

Answer: electrical accessories used terminal terminal box, cable box, a connection pipe and a connecting terminal, steel cable trough, cable bridge cable.

4, The meaning of the cable intermediate joint

Answer: conductor, cable and cable insulation shielding layer and a protective layer, so that the cable line connected device, called the cable joints.

5, what is the main electrical connection?

Answer: the main electrical wiring is connected to the main electrical equipment and busbar substation, power plant, including the connection bus and electric system according to certain functional requirements.

6,In Section selection of power cable, shall comply with the provisions?

Answer: power cable should be chosen in accordance with the following principles:
(1) rated voltage of cable should be greater than or equal to the rated voltage of the power supply system installed;
(2) cable continuing allowable current should be equal to or greater than the maximum continuous current load;
(3) core cross section to meet the stability of power system short-circuit requirements;
(4) according to the length of the cable voltage drop is in accordance with the requirements of checking;
(5) the minimum short-circuit current at the end of the line should be able to make reliable protection device action.

7, XLPE cable and oil paper cable is what are the advantages?

Answer: (1) easy to install, because it allows the minimum bending radius is small, and the weight is light;
(2) is not affected by the line gap restrictions;
(3) good thermal performance, allowing high working temperature, large transmission capacity;
(4) simple cable accessories, are dry structure;
(5) the operation and maintenance are simple, no oil leakage problems;
(6) the price is low;
(7) high reliability, low failure rate;
(8) less manufacturing procedure, simple process, significant economic benefits.

 8,Clamp a fixed AC single core cable and what are the requirements? Why?

Answer: the fixture should be no iron to form a closed magnetic circuit, this is because when the cable core through the current, magnetic lines of force in the surrounding magnetic field and the current size, wire core is proportional to, if the use of iron magnetic material, according to the electromagnetic induction that will produce eddy flow, the cable heating in iron, and even burn the cable. So we can not use iron fixture for single core communication cable.

9, What is the biggest characteristics and advantages of below the heat shrinkable cable head attachment?

Answer: the biggest characteristic of heat shrinkable accessories is stress pipe stress cone instead of the traditional, it not only simplifies the construction process, but also reduces the dimensions of the terminal, connector installation is convenient, time-saving and labor-saving, superior performance, save metal. Heat shrinkable cable accessories set perfusion and dry package as a whole, collection of the advantages of these two attachments

Pleae kindly check Huadong high-quality wire and cable specifications via http://www.qscable.com/product/!

HUADONG Henan Huadong cable group is specialized in the research,development,and production of ABC Cable,Rubber Cable, mv medium voltage power cable,Control/Instrumentation Cable,Mining Cable, Bare Conductor(AAC/AAAC/ACSR/ACS), Huadong Cable Supply the price of 16mm armoured cable,Mc Interlocked Cable, 4 core 240 mm cable price at competitive.
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