Wire and cable common sense question and answer
1. Why should a return line installed along the cable be installed in the grounding mode of the single-core cable sheath at one end? Answer: In the cable line grounded at one end of the metal sheath, in order to ensure that the induced voltage in the sheath does not exceed the allowable standard, a conductor laid along the […]
Be careful! Is your household wire expired!
What? ? ? The wire will also expire? ? ? Emmm… In the world where this wrap will expire, what else will not expire? General household wires have an expiration risk of being used under normal conditions for more than 10 years. Our common household wire is pvc housing wire, 2.5mm2 wire, 4mm2 wire, 6mm2 […]
Wire and cable applications
1. Power system The wire and cable products used in the power system mainly include overhead bare wires, bus bars (bus bars), power cables(plastic cables, oil-paper cables (substantially replaced by plastic power cables), rubber cables, overhead insulated cables), and branch cables. (Replaces some busbars), magnet wires, and electrical equipment, wire and cable for power equipment. 2. Information transmission system The […]
Aluminum alloy core aluminum stranded wire overall performance improvement skills
The rated breaking force of the wire is calculated from the strength of all aluminum single wires and reinforcements. However, the actual breaking force will be deviated from the actual calculated value. The main reason is that the strength of each single wire is not fully utilized. Therefore, when designing the product, not only must meet the minimum strength […]
What problems should be paid attention to during the construction of power cables?
Cable laying method The laying methods of the cable include direct burial laying, pipe laying, shallow groove laying, cable trench laying, cable tunnel laying, and overhead laying. In terms of skill comparison, cable tunneling methods and cable trenching methods are the best method of laying, as these two methods facilitate cable construction, maintenance and repair. […]
Advantages of copper core cable compared to aluminum core cable
1. High strength: Allowable stress at room temperature, copper cable is 7~28% higher than aluminum cable. Especially the stress at high temperatures, the difference between the two is even more distant. 2. Low resistivity: The electrical resistivity of the aluminum core cable is about 1.68 times higher than that of the copper core cable. 3. Good ductility: […]
What are the classifications of wire and cable?
There are many types, and the types are more complicated. Wire and cable are often used for the transmission of conductive transmission equipment. The following wire and cable manufacturers will introduce you to the classification and types of wires and cables. The first, bare wire refers to the product with only the conductor and no insulation layer. This includes […]
The structure and structure of wire and cable are small
Most of the wire and cable products are products with the same cross-section (cross-section) shape (ignoring manufacturing-related errors) and long strips, which are used as features in the system or equipment to form lines or coils. Determined. Therefore, research and analysis of the structural composition of cable products, only need to observe and analyze from its cross […]
Classification of causes of power cable failure
The nature and classification of cable faults1. Classification by fault material characteristicsIt can be divided into three types: series fault, parallel fault and composite fault.(1) series failureA series failure (metal material defect) is a failure in which one or more conductors of the cable (including lead and aluminum sheaths) are disconnected. It is a generalized […]
How to choose the common household wire models and specifications?
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».The arrangement of the lines is leaping and there is no rule to follow. For example, there are 1 square wire, […]