The alarm system based on the professional bus form is currently the most widely used, and the aerial bundled cable SANS 1418 is also the most complicated, so I will focus on the discussion here. RVV2*0.3 (signal cable) and RVV4*0.3 (2-core signal + 2-core power supply) cables are generally used between the front-end detector and the alarm … Read more
1. What are the requirements for cable piping? Answer: (1) The distance from the top of the pipe to the ground is 0.2m in the workshop, 0.5m under the sidewalk, and 0.7m in general areas; (2) Pipe pits should be installed at the change direction and branch, and pits should also be added when 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
1. Bare wires and bare conductor products The main features of this category of products are: pure conductive metal, no insulation and sheath, such as steel core aluminum stranded wire, copper-aluminum busbar, electric locomotive wire, etc.; processing technology is mainly pressure processing, such as melting, rolling, drawing The products are mainly used in suburbs, rural … Read more