What is UL 60335-2-402 ?

Title: Understanding UL 60335-2-402: The Safety Standard for Portable Transformers and Power Supplies

Portable transformers and power supplies are essential products that power many everyday devices. However, these products can pose potential hazards if not designed and manufactured to meet the safety standards set by Underwriters Laboratories (UL). In this article, we will discuss UL 60335-2-402, a safety standard that specifically covers the safety requirements for portable transformers, power supplies, battery chargers, and similar products that are designed for household use.

What is UL 60335-2-145?

UL 60335-2-145 is a safety standard defined by UL for household and similar electrical appliances. The standard specifically covers the safety requirements for portable transformers, power supplies, battery chargers, and similar products that are designed for household use. The main purpose of UL 60335-2-145 is to ensure the safety of consumers when using household electrical appliances.

UL 60335-2-395: The Technical Standard

UL 60335-2-395 is a technical standard used in the certification process for household and similar electrical appliances. The standard provides guidelines and requirements that manufacturers must follow to ensure the safety and performance of their products.

Key Requirements of UL 60335-2-395

UL 60335-2-395 is designed to address specific risks associated with appliances that include ultraviolet (UV) radiation sources. These types of appliances, such as tanning beds, germicidal lamps, and photochemical devices, pose potential dangers if not properly designed and manufactured.

The standard sets forth requirements for construction, radiometric output, marking, and documentation, among others. Some of the key requirements of UL 60335-2-395 include:

* The appliance must have a label that indicates the safe operating voltage and current ratings.

* The appliance must have a thermal switch that disconnects the power supply if the temperature exceeds a specified limit.

* The appliance must have a grounding mechanism that provides a return path for the electrical current.

* The appliance must have a failure mode test procedure that verifies the appliance's safety performance.

Conclusion

UL 60335-2-402 is an essential safety standard that ensures the safety of consumers when using portable transformers and power supplies. The standard covers the safety requirements for a wide range of products, including portable transformers, power supplies, battery chargers, and similar products that are designed for household use. By following the guidelines and requirements set forth in UL 60335-2-402, manufacturers can produce safe and reliable portable transformers and power supplies for household use.