What is UL 60335-2-191 ?

Title: What is UL 60335-2-191 and UL 60335-2-145? A Comprehensive Guide

UL 60335-2-218 and UL 60335-2-145 are two important safety standards developed by Underwriters Laboratories (UL) to ensure the safety of household and similar electrical appliances. These standards specifically focus on the requirements for motor-operated handheld and transportable electric tools and portable transformers, power supplies, battery chargers, and similar products designed for household use. In this article, we will provide a comprehensive guide to both UL 60335-2-218 and UL 60335-2-145, including their purpose, key requirements, and how manufacturers can comply with these standards to ensure the safety of their products.

What is UL 60335-2-191?

UL 60335-2-191 is a safety standard defined by UL for household and similar electrical appliances, specifically for portable transformers, power supplies, battery chargers, and similar products designed for household use. The purpose of UL 60335-2-191 is to ensure the safety of consumers when using electrical appliances, including risks associated with portable transformers, power supplies, battery chargers, and similar products.

Key Requirements of UL 60335-2-191:

To comply with UL 60335-2-191, manufacturers must design and produce their products in a way that minimizes the risks associated with electrical components, wiring, insulation, temperature rise, and other potential dangers. They must also ensure that their products meet the following key requirements:

Electrical Safety: Products must have a risk-free design, including adequate insulation, grounding, and labeling to minimize the risk of electrical shock.

Electrical Conductivity: Products must be made of non-conductive materials that are resistant to electrical currents, such as copper or aluminum.

Voltage Resistance: Products must be able to withstand the maximum voltage and current levels specified in the standard without being damaged or having a failure mode.

Temperature Rise: Products must not exceed the temperature limits specified in the standard during normal use.

Electrical Noise: Products must not produce any excessive electrical noise that could cause discomfort or interfere with other electrical systems.

Brake: Products must have a built-in brake that can stop the tool in case of an emergency stop condition.

Disconnect: Products must have a built-in mechanism to disconnect the power supply, such as a circuit breaker or fuse.

What is UL 60335-2-145?

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

Key Requirements of UL 60335-2-145:

To comply with UL 60335-2-145, manufacturers must design and produce their products in a way that minimizes the risks associated with electrical components, wiring, insulation, temperature rise, and other potential dangers. They must also ensure that their products meet the following key requirements:

Electrical Safety: Products must have a risk-free design, including adequate insulation, grounding, and labeling to minimize the risk of electrical shock.

Electrical Conductivity: Products must be made of non-conductive materials that are resistant to electrical currents, such as copper or aluminum.

Voltage Resistance: Products must be able to withstand the maximum voltage and current levels specified in the standard without being damaged or having a failure mode.

Temperature Rise: Products must not exceed the temperature limits specified in the standard during normal use.

Electrical Noise: Products must not produce any excessive electrical noise that could cause discomfort or interfere with other electrical systems.

Brake: Products must have a built-in brake that can stop the tool in case of an emergency stop condition.

Disconnect: Products must have a built-in mechanism to disconnect the power supply, such as a circuit breaker or fuse.

Conclusion:

UL 60335-2-218 and UL 60335-2-145 are two important safety standards developed by UL to ensure the safety of household and similar electrical appliances. These standards specifically focus on the requirements for portable transformers, power supplies, battery chargers, and similar products designed for household use. By complying with these standards, manufacturers can minimize the risks associated with their products and ensure the safety of consumers when using electrical appliances.