Factors affecting Aerial Bundled Cable (ABC) SANS 1418 Standard and placement in the wiring six factors affecting cable performance: Ultraviolet (UV)– Do not use cables without UV protection in direct sunlight. Heat — The temperature of the cable in the metal tube or groove is very high, and many polymeric materials will degrade their service … Read more
The energy saving effect of frequency conversion device is very obvious, the use of frequency conversion speed regulating motor in high power motor, the whole generator set can save 30% electricity. And after the use of frequency conversion speed regulation, the soft start of the motor is realized, so that the motor works smoothly, the … Read more
1. What are the requirements for fire blocking of cable holes? Answer: For larger cable penetration holes, such as the cable penetration floor, when using fireproof blocking materials to block, according to the actual situation, first apply four to six layers of fireproof paint on the cable surface, the length is about 1.5m below the … Read more
(1 )Overview Low-voltage cables have many specifications and models. Take indoor PVC insulated PVC sheath below 1KV as an example to illustrate the production of power cable terminal cable heads. (2) Construction process Measure the grounding resistance → strip the cable end → wrap the cable and sheath the terminal end of the aerial bundled … Read more
The advantage of aluminum alloy cable over ordinary cables is that under the same volume, the actual weight of aluminum alloy is about one-third of copper. According to this calculation, under the premise of meeting the same electrical conductivity, the length of the aluminum alloy cable with the same weight is twice that of the … Read more
Due to the increase of wires and cables, the concentration of laying, the poor quality of construction, etc., the danger of wire and cable fires has increased. Therefore, to prevent aerial bundled cable astm b231 fires in actual engineering applications, it is necessary to start with controlling dangerous factors, apply relevant regulations, and take corresponding … Read more
Before moving into a new house, everyone will check the house first, but most citizens will focus on the structure of the house, and they rarely care about the wires inside the walls. If the house is compared to a person, then the wires hidden in the walls are the vital “arteries”. The wires for … Read more
Copper core cables have more advantages than aluminum core cables: 1. Low resistivity: the resistivity of aluminum core aerial bundled cable BS 7870 is about 1.68 times higher than that of copper core cable. 2. Good ductility: the ductility of copper alloy is 20-40%, the ductility of electrical copper is more than 30%, while aluminum … Read more
Cross-linked polyethylene insulated cables have good mechanical properties, convenient installation and maintenance, excellent insulation performance, larger transmission capacity than oil-paper insulated cables of the same cross-section, simple production process, conducive to mass production, and can transmit power to areas that cannot be reached by overhead lines And other advantages, so it is increasingly widely used … Read more