What is BS EN 61439-6:2018 ?

Title: Understanding BS EN 61439-6:2018: A Technical Article on Fire Resistance and Safety in Building Elements

Introduction:

Building structures are designed to provide shelter and protection for people and assets. The fire resistance of building elements is critical in 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, the application and relevance of this standard have been subject to much debate. In this technical article, we will explore the current relevance and application of BS476: Part 20 in today's construction industry.

What is BS EN 60947-62?

BS EN 60947-62 is a technical standard developed by the International Electrotechnical Commission (IEC) to ensure the safety and performance of electrical equipment, specifically circuit-breakers. It specifies the requirements and tests for circuit-breakers, which are crucial devices that protect electrical circuits from overload, short-circuit, and other faults. The purpose of this standard is to provide manufacturers, installers, and users with clear guidelines and requirements for designing, manufacturing, and using circuit-breakers that meet high safety and performance standards.

Key Requirements and Tests:

BS EN 60947-62 outlines a series of key requirements and tests for circuit-breakers, including:

1. Electrical Characteristics: The standard specifies the electrical characteristics of the circuit-breakers, such as their、、.2. Temperature Rise: The standard sets out the maximum temperature rise that can be expected during the operation of the circuit-breaker.

3. Current Draw: The standard defines the current draw of the circuit-breaker during various operating conditions, such as no-load, full-load, and overload.

4. Life Time: The standard specifies the maximum number of cycles that the circuit-breaker can withstand before it fails or is damaged.

5. Safety Characteristics: The standard outlines the safety characteristics of the circuit-breaker, including its ability to detect over-current and provide an interruptive response to prevent damage to the electrical system or people.

6. Testing: The standard specifies the testing procedures for the circuit-breakers, including the tests that must be performed to ensure the safety and performance of the device.

Conclusion:

BS EN 61439-6:2018 is a technical standard that outlines the requirements and tests for circuit-breakers, which are crucial devices that protect electrical circuits from overload, short-circuit, and other faults. The current relevance and application of BS476: Part 20 in today's construction industry are assessed. The standard provides manufacturers, installers, and users with clear guidelines and requirements for designing, manufacturing, and using circuit-breakers that meet high safety and performance standards. By adhering to the requirements and tests outlined in BS EN 60947-62, manufacturers can ensure that their circuit-breakers are safe, reliable, and perform effectively in a variety of applications..