What is the difference between UL 60950-1 and 62368-1?

The safety standards for electronic equipment, UL 60950-1 and 62368-1, are both important certification requirements that manufacturers need to meet for their products. However, they apply to different types of devices and have distinct testing procedures. In this article, we will explore the key differences between these two safety standards.

Application Scope

UL 60950-1, also known as the "Standard for Information Technology Equipment," primarily focuses on devices such as computers, printers, and telecommunication equipment. It addresses the safety aspects related to electrical, mechanical, fire, and radiation hazards associated with these types of equipment.

On the other hand, UL 62368-1, known as the "Standard for Audio/Video, Information and Communication Technology Equipment," covers a wider range of products, including audio/video equipment, broadcast receivers, and information technology equipment. It expanded the scope of UL 60950-1 to incorporate newer technologies and evolving consumer needs.

Testing Methods

When it comes to testing, UL 60950-1 employs a hazard-based approach, which means that potential risks and dangers associated with a product are identified, and appropriate measures are taken to mitigate those risks. The standard uses tests such as dielectric voltage-withstand testing, abnormal operation, and environmental tests to evaluate the safety performance of the equipment.

UL 62368-1, on the other hand, follows a risk-based methodology. It analyzes potential hazards during normal operation, abnormal operation, single fault conditions, and foreseeable misuse scenarios. This wider range of testing accounts for the diverse usage patterns and environment in which the equipment may be used.

Transition from UL 60950-1 to 62368-1

Due to the increasing convergence of technologies and the need for a more comprehensive safety standard, UL 60950-1 is being phased out and replaced by UL 62368-1. The transition period began in 2018 and will end in December 2020. This means that by the end of 2020, new products seeking certification must comply with UL 62368-1.

The transition is necessary to ensure that manufacturers continue to meet the evolving safety requirements and standards. It also aligns better with international safety certifications, such as IEC 62368-1, which is already widely accepted in many parts of the world.

In summary, while UL 60950-1 and 62368-1 share a common goal of ensuring the safety of electronic equipment, they differ in their application scope and testing methodologies. As technology continues to advance, it is crucial for manufacturers to stay updated with the latest safety standards and make the necessary transitions to comply with evolving industry regulations.