10.1 Selection of integrated wiring products
10.1.1 Importance and prerequisites for product selection
1. The importance of product selection
The integrated wiring system is one of the infrastructures in the intelligent building and intelligent community. From the past engineering analysis at home and abroad, the selection of system equipment and materials is the key link and important content of engineering design.
2. Prerequisites for product selection
â— The nature, function and environment of intelligent buildings and intelligent communities, including the level, status and importance of the city; distinguish between important high-tech intelligent buildings and ordinary office intelligent buildings.
â— The construction scale and construction plan of intelligent buildings and intelligent communities, including the distribution of buildings, the number of floors of the building, the layout, building area, various pipeline systems, and the design and construction schedule.
â— The recent user information needs of intelligent buildings and intelligent communities, and the development needs and changes in information services are estimated.
â— The objective environment, future development and changes of the intelligent building, such as whether there is a source of electromagnetic interference at present and in the future, and whether it is possible to develop into an intelligent community.
10.1.2 Principles of product selection
(1) Must be combined with the actual project.
(2) The selected products should conform to China's national conditions and relevant technical standards of international, domestic and industry.
(3) Combining short-term and long-term.
(4) In line with the principle of unification of technological advancement and economic rationality.
10.1.3 Specific steps and working methods of product selection
(1) Grasp the prerequisites and collect basic data.
(2) Before selecting a product, you should conduct an investigation or collect product information, visit the unit that has used the product, and fully grasp its use effect; listen to various feedbacks to analyze the product; carefully screen two or three products for Prepare for further evaluation and inspection.
(3) Objectively and fairly compare the technical and economic evaluation and comprehensive evaluation of the primary products to select the ideal product.
(4) Focus on investigating the technical strength, production equipment, process flow and after-sales service of the manufacturers of the first-selected products, on-the-spot investigation of the use of the products, and on-site testing of certain basic properties to obtain first-hand information.
(5) After the above-mentioned work, there should be a relatively comprehensive comprehensive understanding of the selected products. Based on the principles of economy, practicality, reliability and reliability, the final selection of products is proposed, and the construction unit or the relevant leading decision-making department shall be determined.
(6) Finally, the specifications and quantities of the main equipment, various cables, wiring components and other accessories required in the integrated wiring system project should be calculated and summarized, and the details of the specific ordered products should be discussed with the manufacturer, especially the product quality, The delivery date, location and payment method, etc., should be clearly specified in the order contract to ensure that the integrated wiring system project can proceed smoothly as planned.18650 protected batteries have an electronic circuit.
The circuit is embedded in the cell packaging (battery casing) that protects the cell from [over charge", heat or [over discharge", over current and short circuit.
A 18650 protected battery is safer than an 18650 unprotected battery (less likely to overheat, burst or start on fire).
18650 Cell, 18650 Charger, 3v battery
Shenzhen Powercom Electronics Co., Ltd. , https://www.expowercome.com