BS EN 60947-5-2:2007+A1:2012+2013 is a technical standard that specifies requirements and tests for electrical devices used in control circuits for low-voltage switchgear and controlgear assemblies. It is applicable to devices such as electromechanical switching devices, solid-state switching devices, and associated equipment.
Scope and Application
The scope of BS EN 60947-5-2:2007+A1:2012+2013 covers devices with a rated voltage not exceeding 1,000 V AC or 1,500 V DC. It applies to devices operating at frequencies up to 60 Hz, for use in industrial, commercial, and residential installations.
The standard provides guidelines on the performance, safety, and reliability of these devices. It ensures that the equipment complies with essential safety and functional requirements, enabling the safe operation of electrical systems.
Key Requirements and Tests
The standard outlines several key requirements for devices covered under BS EN 60947-5-2:2007+A1:2012+2013:
1. Electrical & Mechanical Durability: Devices should be designed to withstand specified electrical and mechanical endurance tests, ensuring their longevity and operability in different operating conditions.
2. Temperature Rise: The standard specifies maximum allowable temperature increases for various device components to prevent overheating and potential hazards.
3. Clearances & Creepage Distances: Minimum clearances and creepage distances between live parts and accessible parts are defined to prevent electrical shock risks for users.
4. Dielectric Properties: Insulating materials used in the devices are tested for their dielectric strength to ensure they can withstand voltage stresses without degradation.
5. Resistance to Heat & Fire: Devices should be resistant to abnormal heat and fire exposure to prevent hazardous situations from occurring.
Compliance and Certification
Manufacturers need to ensure that their devices meet the requirements of BS EN 60947-5-2:2007+A1:2012+2013. Compliance with this standard is typically demonstrated through third-party testing, where devices are evaluated against the specified test methods.
Once a device meets all the criteria outlined in the standard, it can receive certification, indicating its compliance and safety. This certification reassures end-users that the products they are using have undergone rigorous testing and comply with the necessary safety standards.
In conclusion, BS EN 60947-5-2:2007+A1:2012+2013 plays a crucial role in ensuring the safety and performance of electrical devices used in control circuits for low-voltage switchgear and controlgear assemblies. By adhering to this standard, manufacturers can produce reliable and safe devices that meet the required specifications, protecting both users and the electrical systems they operate in.
Nina She