Bus duct is the main power line of the project, and once there is a problem, it will have a significant impact. Busbar trunking involves energy loss, voltage drop and its impact on equipment, posing safety hazards. Therefore, controlling the quality of the bus duct is very important. Design of busbar trunking power supply system. At present, most projects only have three-phase four wire or three-phase five wire current. Some projects have improved the level of intellectual property protection. When designing and modeling, try to include important safety technologies on the drawings as much as possible. Prevent difficulties in project settlement caused by technical parameters and reduce safety hazards.

How to choose a busbar trunking manufacturer?

1. Bus duct certification

The national mandatory certification of bus ducts has been implemented for many years. After the new standard version in 2006, 3C certification moved towards standardization. The National Certification and Accreditation Administration and China Quality Certification Center have issued some technical parameter announcements to review the production qualifications of enterprises for their 3C certificates and 3C testing reports. The 3C certificate and inspection report of the bus duct can reflect the technology and current specifications of the certified products of our company, in order to determine whether they meet the usage requirements of the project. Review technical content: ① current specifications, ② protection level IP, ③ short-circuit withstand strength ICW=KA, ④ ordinary busbar or fireproof smoke exhaust busbar or fire-resistant busbar, ⑤ if the above 7 technical data meet the technical requirements, the certified product can basically be used with confidence.

2. Production quality control audit

Inspection: For conductor inspection, whether there are instruments for measuring the resistivity of bus conductors, whether there are bus voltage testing devices, whether there are temperature rise bus capacity testing equipment for current interception, and testing equipment for protecting circuit continuity are directly related to the qualification rate of production enterprise products. Only with these testing equipment can the company provide effective basis for ensuring the quality of factory products.

3. Command review and testing

The conductor specifications of the bus duct are 15-20% cheaper than those in the electrician's manual when the current carrying capacity is 40 ℃. Bus ducts with poor heat dissipation are more favorable, such as bus ducts. When there is a discrepancy in the current carrying capacity calculation, it is recommended to conduct a temperature rise limit verification test.