What is UL 849 ?

Title: What is UL 849 and UL 859? A Technical Article on Safety Requirements for Electrically Heated Blankets

UL (Underwriters Laboratories) is a global safety science organization that provides testing, certification, and inspection services. The purpose of UL 849 and UL 859 is to ensure the safety of electrically heated blankets and industrial control panels, respectively. In this article, we will discuss the key requirements of these two UL standards and their significance in ensuring product safety.

What is UL 849?

UL 849, also known as UL 859, is a widely recognized standard in the electrical industry for safety requirements of electrically heated blankets. This standard was developed to minimize the risks associated with the use of electrically heated blankets and prevent potential hazards such as overheating, electrical shocks, or fire outbreaks.

The Key Requirements of UL 849

UL 849 sets forth rigorous testing procedures and performance requirements that manufacturers must adhere to in order to obtain UL certification for their products. These requirements are designed to ensure that electrically heated blankets are safe for use, reliable, and meet essential safety criteria. Key requirements of UL 849 include:

Electrical Safety: The product must have a low voltage rating, ensuring that it is safe to touch and does not pose a risk of electrical shock.

Fire Resistance: The product must be able to withstand a fire for a specified amount of time, meeting the requirements of UL 711.

Temperature Control: The product must maintain a temperature within safe limits, as specified by the manufacturer.

Safety Harness: The product must include a safety harness, as specified by UL 856.

Test procedure: The manufacturer must follow a testing procedure, as specified by UL 849, to ensure that their product meets the requirements of the standard.

Significance of UL 849

UL 849 is a crucial standard for ensuring the safety of electrically heated blankets. It helps prevent potential hazards associated with the use of these blankets, such as overheating, electrical shocks, or fire outbreaks. By adhering to the requirements of UL 849, manufacturers can ensure that their products are safe for use and meet essential safety criteria.

What is UL 859?

UL 859 is a technical standard set by UL for industrial control panels (ICPs) used in various applications. The purpose of UL 859 is to guarantee the safe installation and operation of these panels, reducing the risk of electrical hazards such as electric shock, fire, or equipment malfunction.

The Key Requirements of UL 859

UL 859 sets forth rigorous testing procedures and performance requirements for industrial control panels. These requirements are designed to ensure that the panels meet specific safety criteria, reducing the risk of electrical hazards. Key requirements of UL 859 include:

Electrical Safety: The panel must have a low voltage rating, ensuring that it is safe to touch and does not pose a risk of electrical shock.

Fire Resistance: The panel must be able to withstand a fire for a specified amount of time, meeting the requirements of UL 711.

Short circuit protection: The panel must have circuit protection, as specified by UL 858.

Overvoltage protection: The panel must have overvoltage protection, as specified by UL 858.

Grounding: The panel must be properly grounded, as specified by UL 858.

Test procedure: The manufacturer must follow a testing procedure, as specified by UL 859, to ensure that their product meets the requirements of the standard.

Significance of UL 859

UL 859 is an essential standard for ensuring the safety of industrial control panels. By adhering to the requirements of UL 859, manufacturers can ensure that their products meet specific safety criteria, reducing the risk of electrical hazards.

Conclusion

UL 849 and UL 859 are two crucial standards for ensuring the safety of electrically heated blankets and industrial control panels, respectively. These standards were developed to minimize the risks associated with their use and prevent potential hazards such as overheating, electrical shocks, or fire outbreaks. By adhering to the requirements of these standards, manufacturers can ensure that their products are safe for use and meet essential safety criteria.