UL 60947-3:2020 is a technical standard set by Underwriters Laboratories (UL) specifically for low-voltage switchgear and controlgear. This standard provides important guidelines and requirements for the construction, testing, and performance of these electrical devices. It aims to ensure safety and reliability in various applications, such as industrial machinery, commercial buildings, and residential installations.
of UL 60947-3:2020
The new version of UL 60947-3 was released in 2020, superseding the previous edition from 2009. This revised standard includes several updates and changes to keep up with advancements in technology and address emerging safety concerns. The major areas covered by UL 60947-3 include:
Categorization and utilization of low-voltage switchgear and controlgear.
Marking, identification, and ratings of products.
Safety requirements related to electrical, mechanical, thermal, and functional aspects.
Tests and verification procedures to ensure compliance with the standard.
Key Changes in UL 60947-3:2020
This latest version of the standard introduces significant changes that impact manufacturers, designers, and end-users of low-voltage switchgear and controlgear. Some of the key changes include:
Introduction of new temperature-rise limits for certain equipment categories to improve safety.
Updated requirements for energy handling and dissipation, addressing environmental concerns.
Revised tests for service accessibility, making it easier to inspect and maintain these devices.
Inclusion of new provisions for arc fault protection to minimize fire hazards.
Benefits and Implications
The updates and changes in UL 60947-3:2020 bring several benefits to the industry and end-users alike. The revised standard enhances safety measures, reduces environmental impact, and promotes interoperability between various low-voltage switchgear and controlgear products. Compliance with UL 60947-3:2020 offers manufacturers a competitive edge by ensuring their products adhere to internationally recognized safety standards.
For end-users, the standard provides assurance of quality, performance, and reliability of the electrical equipment they install. It also helps in simplifying compliance with local regulations and codes regarding low-voltage installations. Ultimately, adherence to UL 60947-3:2020 is vital for creating a safer environment, reducing risks of electrical accidents, and protecting both people and property.
Nina She