There are so many accidents due to cables. What is the cause of the cable accident? The main reason is that the silicone rubber cable is aging due to the insulation reduction, resulting in an accident.
Allowable stress at room temperature, copper is 7~28% higher than aluminum. Especially the stress at high temperatures, the difference between the two is even more distant.
The high-voltage power cable connector head is used for the connection of the power cable itself, and has a connection joint, an insulated intermediate joint, an oil-filled power cable, a steel pipe power cable, and a plug-type joint.
the purchase of wire and cable should also consider its use, usually calculate the wire current according to the power of the electrical appliances, and then select the wire size according to the current.
The products are mainly used for transmission of strong electric energy in the transmission, distribution, transmission, transformation and power supply lines.
The pace of rail transit construction has accelerated, and the increase in mileage of railway operations has led to the expansion of demand for rail transit cables, and the demand for wires and cables has also increased.
Composite failures (insulations in both insulating materials and metallic materials) mean that the insulation between the core and the core is faulty. It includes a phase disconnection and grounding, two-phase disconnection and grounding, two-phase short-circuit and grounding.
The specification of the wire is the line side - the cross-sectional area of the wire, in square millimeters, referred to as square or square - this sentence has been reduced to two words "line".
In recent years, the news of counterfeit and shoddy cable products has emerged in an endless stream. Many unscrupulous manufacturers in the cable industry have sacrificed product quality for the pursuit of interests, making the cable market a must-have.
The control cable is suitable for use in industrial and mining enterprises, energy and transportation departments, industrial AC power control below 450 volts, PE insulated control cables used for protection circuits, and PVC sheathed control cables.
