At present, the electrical system industry is accustomed to collectively refer to fire-retardant (Fire retardant), halogen-free and low-smoke (LS0H) or low-halogen and low-smoke (Lowsmokefume, LSF), fire resistant (Fire resistant) and other electrical appliances with certain fire resistance properties as fire-resistant cables. 1. Flame retardant cable The characteristic of flame-retardant cables is to delay the spread … Read more
How to prevent wires and cables from catching fire due to overload of wires? During the operation of the wire and cable, it will generate heat due to the existence of resistance. The resistance of the wire is generally very small, and its heating power can be expressed by the formula q=I^2R. q=I^2R indicates: for … Read more
In urban power grid renovation projects, cables, especially XLPE insulated power cables, have been widely used. However, due to the particularity of the cable, there are special requirements for the installation, operation and maintenance of the cable. Moisture or water ingress of the cable reduces the insulation resistance of the cable, which is an important … Read more
1. Power cable: NH-VV NH-VV copper core PVC insulated PVC sheathed fire-resistant power cable. Suitable for rated voltage 0.6/1KV. Use characteristics: Long-term allowable working temperature is 80℃. Allowable bending radius during laying: single-core cables are not less than 20 times the cable outer diameter, and multi-core cables are not less than 12 times the cable … Read more
Photovoltaic cable: PV1-F1*4mm2 The cable from the string to the combiner box is generally used: photovoltaic cable PV1-F1*4mm2. Features: The photovoltaic cable has a simple structure. The polyolefin insulation material used in it has excellent heat resistance, cold resistance, oil resistance, and ultraviolet resistance. It can be used under harsh environmental conditions and has a … Read more
The YJV power cable is composed of one or several soft wires, and the outer covering is covered with a light soft sheath; the cable is composed of one or several insulated wires, and the outside is covered with a tough outer layer made of metal or rubber. As we all know, there are single-core … Read more
Requirements of General rubber plastic wire: 1. Scope of application: connection and internal installation of power, lighting, electrical equipment, instrumentation and telecommunication equipment with AC rated voltage of 450/750V low voltage cable and below. 2. Laying occasions and methods: indoor open laying and communication channels, along the wall or overhead laying in tunnels; outdoor overhead … Read more
Generic cabling is one of the key links of information network system. In order to ensure the high-speed and stable operation of information network system, it is particularly important to select high-quality and high-performance cables. The cable selection should be based on the system requirements, technical performance, investment estimates and other factors, but in the … Read more
The use of non environmental protection cables is strictly prohibited in developed countries, and China also attaches great importance to this field. China’s relevant laws and regulations clearly require the use of PVC wires and cables in important buildings. Halogen free and low smoke crosslinked PVC wires and cables must be used to avoid heavy … Read more
1. Bare wire and bare conductor products The main features of this class of products are: pure conductor metal, no insulation and sheath layer, such as steel-cored aluminum strand wire, copper-aluminum busbar, electric locomotive wire; The processing technology is mainly pressure processing, such as melting, rolling, drawing, stranded/pressed stranded, etc. Products are mainly used in … Read more