What is UL 60947-2:2020?

UL 60947-2:2020 is a technical standard that sets safety requirements for low-voltage switchgear and control gear assemblies. It is an internationally recognized standard published by Underwriters Laboratories (UL), an independent third-party certification organization. This article aims to provide an easy-to-understand explanation of the key aspects of UL 60947-2:2020.

Scope and Purpose

The scope of UL 60947-2:2020 covers low-voltage switchgear and control gear assemblies, commonly used in industrial applications. The purpose of this standard is to ensure the safe operation of these electrical devices, protecting both users and property from potential hazards.

UL 60947-2:2020 addresses various aspects related to switchgear and control gear assemblies, including their design, construction, and performance. It sets specific requirements for electrical and mechanical properties, marking and identification, as well as tests and performance criteria.

Key Requirements and Tests

UL 60947-2:2020 defines a wide range of requirements and tests to evaluate the safety and performance of switchgear and control gear assemblies. These include:

Overcurrent Protection: The standard specifies conditions under which switchgear and control gear assemblies must provide protection against overcurrents. This helps prevent damage to equipment and reduces the risk of electrical fires.

Temperature Rise: UL 60947-2:2020 sets limits on the maximum temperature rise allowed within switchgear and control gear assemblies during normal operation and short-circuit conditions. This ensures that the devices do not overheat, maintaining their integrity and functionality.

Dielectric Properties: The standard assesses the dielectric properties of switchgear and control gear assemblies to ensure they can withstand the voltage stress they are designed for. This helps prevent electrical breakdowns and ensures user safety.

Certification and Compliance

Manufacturers of switchgear and control gear assemblies can choose to have their products tested and certified by UL according to the requirements of UL 60947-2:2020. Certification indicates that the equipment complies with the safety standards outlined in the standard.

Compliance with UL 60947-2:2020 is widely recognized globally, facilitating international trade and ensuring consistency in product quality and safety. It is important for manufacturers, users, and regulators to consider UL 60947-2:2020 when dealing with low-voltage switchgear and control gear assemblies.

In conclusion, UL 60947-2:2020 is a crucial standard that sets safety requirements for low-voltage switchgear and control gear assemblies. By adhering to this standard, manufacturers can ensure the safety and reliability of their products, while users can have confidence in the performance and protection offered by these devices.