What is BS EN 60947-5-4-2003 ?

Title: What is BS EN 60947-62? A Technical Standard for Low-Voltage Switchgear and Controlgear Devices

The power sector plays a vital role in ensuring the safety and reliability of electrical systems. Relays and protection equipment are essential components of these systems, and their proper functioning is critical for the safe and efficient operation of the overall system. To ensure the quality and reliability of these devices, various international standards are developed by organizations such as the International Electrotechnical Commission (IEC). In this article, we will focus on the standard BS EN 60947-62, which is designed to ensure the safe operation and performance of circuit-breakers.

What is BS EN 60947-62?

BS EN 60947-62 is a technical standard published by the IEC that specifies the requirements for low-voltage switchgear and controlgear devices. This particular standard is part of a series of standards developed by the IEC to ensure the safety and performance of electrical equipment.

The primary purpose of BS EN 60947-62 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. The standard covers various aspects of circuit-breakers, including functionality, response time, accuracy, stability, and immunity to external disturbances.

Key Requirements and Tests:

BS EN 60947-62 consists of several key requirements and tests that manufacturers must meet to ensure their circuit-breakers meet the required safety and performance standards. These requirements and tests are designed to ensure that the circuit-breakers are safe to use in a variety of different operating conditions and environments.

The standard has several key requirements, including:

* Electrical safety: The circuit-breakers must be designed to prevent electrical hazards, such as electrical fires, electrical currents, and other hazards.

* Performance: The circuit-breakers must be able to perform their intended functions at full load, and they must not experience any significant degradation in performance over time.

* Reliability: The circuit-breakers must be designed to operate reliably in a variety of different environments and conditions.

* Test procedures: The manufacturer must have a testing program in place to verify that their circuit-breakers meet the requirements of the standard.

The standard also includes several tests that manufacturers must perform to ensure that their circuit-breakers are safe and reliable. These tests include:

* Electrical continuity: The manufacturer must ensure that the circuit-breakers are free from electrical continuity between the terminals.

* Overvoltage: The manufacturer must ensure that the circuit-breakers are able to withstand the maximum voltage that they are expected to operate on.

* Overcurrent: The manufacturer must ensure that the circuit-breakers are able to withstand the maximum current that they are expected to operate on.

* Short-circuit: The manufacturer must ensure that the circuit-breakers are able to withstand short-circuits.

* Immunity to external disturbances: The manufacturer must ensure that the circuit-breakers are immune to external disturbances that may affect their performance.

Conclusion:

BS EN 60947-62 is an essential standard for manufacturers of circuit-breakers. It provides clear guidelines and requirements for designing, manufacturing, and using circuit-breakers that meet high safety and performance standards. By ensuring that their circuit-breakers meet the requirements of this standard, manufacturers can ensure that their products are safe, reliable, and effective in a variety of different operating conditions and environments.