Title: A Comprehensive Guide to BS EN 61747-21:2018 and EN 61747-2020
Building elements are an essential aspect of the construction industry, and their fire resistance is crucial for ensuring the safety and well-being of occupants and the surrounding environment. The British Standard 476 Part 20 (BS476: Part 20) is a widely recognized standard that outlines the requirements for determining the fire resistance of various elements within buildings. However, as construction projects evolve and new materials and technologies are developed, it is essential to keep up with the latest standards and guidelines. This technical article will assess the current relevance and application of BS476: Part 20 in today's construction industry, with a focus on the new European Technical Standard (EN) 61747-2020.
What is BS EN 61747-21:2018?
BS476: Part 20 is a British Standard that specifies the requirements for determining the fire resistance of various elements within buildings. The standard outlines the procedures for conducting fire tests to evaluate the time period that an element can withstand fire exposure without compromising its structural integrity. This standard is widely recognized in the industry as the benchmark for quality and performance of building elements.
EN 61747-2020 is a technical standard developed by the European Committee for Electrotechnical Standardization (CENELEC) that specifies the requirements and test methods for liquid crystal display (LCD) modules. The purpose of EN 61747-2020 is to provide manufacturers, suppliers, and customers with a clear set of guidelines and criteria to ensure the reliable and consistent operation of LCD modules. By adhering to this standard, companies can enhance the quality and durability of their products, which ultimately benefits end-users.
Key Requirements of EN 61747-2020:
EN 61747-2020 has several key requirements that manufacturers and suppliers must meet to ensure the quality and reliability of their LCD modules. These requirements include:
Reliability: The LCD module must be able to withstand the environmental conditions specified by the manufacturer, including temperature, humidity, and vibration.
Electrical Performance: The LCD module must meet the electrical requirements specified by the manufacturer, including voltage, current, and frequency.
Display: The LCD module must be capable of displaying the required images and text in the specified resolution, color, and brightness.
Response Time: The LCD module must have a response time of less than 1ms to display the required images and text.
Power Consumption: The LCD module must have a low power consumption, as specified by the manufacturer.
Environmental Protection: The LCD module must be able to withstand the environmental conditions specified by the manufacturer, including temperature, humidity, and vibration.
Safety: The LCD module must meet the safety requirements specified by the manufacturer, including overvoltage, overcurrent, and short-circuits.
Conclusion:
BS EN 61747-21:2018 and EN 61747-2020 are two important standards that specify the requirements and test methods for building elements and LCD modules, respectively. By adhering to these standards, manufacturers, suppliers, and customers can ensure the quality and reliability of their products, which ultimately benefits end-users. As the construction industry evolves, it is essential to keep up with the latest standards and guidelines to ensure the safety and well-being of occupants and the surrounding environment.
Nina She