1. What kinds of wires and cables are commonly used according to their uses?

A: According to the use can be divided into bare wire, insulated wire, heat-resistant wire, shielded wire, power cable, control cable, communication cable, RF cable and so on.

2. What kinds of insulated wires are there?

A: There are often the following kinds of insulated wires: PVC insulated wires, PVC insulated cords, nitrile PVC mixture insulated cords, rubber insulated wires, agricultural underground directly buried aluminum core plastic insulated wires, rubber insulated cotton yarn textile flexible wires, PVC insulated nylon sheathed wires, power and lighting PVC insulated cords, etc.

3. What are the cable accessories?

A: The commonly used electrical accessories are cable terminal junction box, cable intermediate junction box, connecting pipe and terminal, steel plate wiring slot, cable bridge, etc.

4, what is the cable adapter?

A: The device that connects the cable with the conductor, insulating shielding layer and protective layer of the cable to connect the cable line is called the cable connector.

5. Which aspects should be considered in choosing the section of power cable?

A: The following aspects should be considered:

(1) The working current allowed through the cable for a long time; (2) Thermal stability once short-circuited; (3) The voltage drop on the line cannot exceed the allowable working range.

6, when choosing the section of the power cable, what provisions should be followed?

A: The selection of power cables should follow the following principles:

(1) The rated voltage of the cable should be greater than or equal to the rated voltage of the power supply system at the installation point; (2) The continuous allowable current of the cable should be equal to or greater than the large continuous current of the power supply load; (3) The core section should meet the stability requirements of the power supply system when it is short circuited; (4) Check whether the voltage drop meets the requirements according to the cable length; (5) The small short-circuit current at the end of the line should enable the reliable operation of the protection device.

7. What are the advantages of cross-linked polyethylene cable and oiled paper cable?

A: (1) Easy to install, because it allows a small bending radius, and light weight; (2) not subject to line drop; (3) Good thermal performance, high allowable working temperature, large transmission capacity; (4) The cable accessories are simple and dry structure; (5) Simple operation and maintenance, no oil leakage problem; (6) The price is lower; (7) High reliability, low failure rate; (8) Fewer manufacturing processes, simple processes, and significant economic benefits.

8, fixed AC single-core cable clamp has what requirements? Why?

A: The fixture should have no iron to form a closed magnetic circuit, this is because when the cable core through the current, the magnetic force line around it, the magnetic force line is proportional to the size of the current through the core, if the use of iron parts and other magnetic materials, according to the electromagnetic induction, will produce eddy currents in the iron parts to make the cable heat, or even burn the cable. Therefore, it is not possible to use iron parts as a fixed fixture for single-core AC cables.

Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable. Hotline: 16678668098