Bus duct is the main application product in power projects. Once some problems arise, analysis will have a significant impact on them. It involves risks such as energy loss, the impact of voltage drop on equipment, and other existing safety hazards. Therefore, quality control of bus ducts is very important for us.

1. At present, most enterprises in China only have three-phase four wire or three-phase five wire current for project management. Some projects have improved the level of intellectual property protection. The company's security information technology clearly needs to be written on the drawings to prevent technical parameters from causing difficulties in project settlement and reduce network security risks.

2. The busbar trunking selected by the power project has been subject to mandatory national certification for many years, and the certificate has been updated. After the new standard version in 2006, 3C certification moved towards social norms. The National Certification and Accreditation Administration and the China Education Quality and Safety Certification Service Center have their own announcements on some products' 3C certificates and 3C testing research reports. The main information technology parameters are used to review the production and operation qualifications of enterprises. Review whether the company's development and production can ensure product quality from the following aspects:

2.1 Certification of Busway 3C Certificate and Test Research Report can reflect that the company has passed the certification of the company's product technology and current specifications to determine whether it can meet project management needs. Review of technical content: ① ② Current specification protection level IP ③ Short circuit withstand strength ICW=KA ④ Smoke or flame spread public busbar capacity closure ⑦ Fire resistance protection circuit continuity busbar or busbar ⑤⑥ Conductor temperature rise, etc. If the above data technology meets the enterprise's technical development requirements, certified product designs can be used with confidence.

2.2 Production Quality Control Audit

Inspection: For conductor inspection, whether there is an instrument for measuring the resistivity of the conductor on the busbar conductor, whether there is a voltage testing device on the busbar, whether there is a temperature L testing equipment for the busbar current cutting ability, and whether the testing equipment protects the continuity of the circuit. These devices are directly related to the qualification rate of the manufacturer's products. If these factors exist, the management of testing equipment can provide effective basis for ensuring the quality and safety of the company's products and services.

2.3 Conductor review and testing

The conductor specifications of bus ducts are discounted by 15-20% compared to the development of current carrying capacity at an ambient temperature of 40 ℃ in the electrical engineering manual, and bus ducts with poor heat dissipation in structural design are discounted even more. If there is a discrepancy in the analysis and calculation of the current carrying capacity of the busbar, it is recommended that we conduct a validation model test on the temperature rise limit.