What is UL 957 ?

Title: What is UL 957 and How Does it Affect Your Industry?

Power-operated dispensing devices are essential for various industries, including the electrical appliances industry. However, these devices pose a significant safety risk due to their direct contact with people and the potential for electrical hazards. To mitigate these risks, manufacturers, retailers, and consumers must understand the requirements of UL 957, or the Standard for Power-Operated Dispensing Devices.

Purpose of UL 957:

UL 957 is a widely recognized safety standard that ensures the performance and safety of power-operated dispensing devices. Its primary objective is to ensure the safe operation of these devices, minimize the risk of electrical hazards, and protect both users and property. The standard outlines specific performance requirements for battery control assemblies, including electrical characteristics, construction, markings, and environmental considerations.

Key Requirements of UL 957:

UL 957 has several key requirements that manufacturers must fulfill to ensure the safety and performance of their power-operated dispensing devices. These requirements include:

Electrical Characteristics:

The electrical characteristics of the battery control assembly, including maximum voltage, current, and resistance, must meet the requirements specified in Table 1 of UL 95

Construction:

The battery control assembly must be constructed to prevent short circuits, overheating, and other adverse conditions that could cause electrical hazards. The assembly must also be designed to withstand the environmental conditions specified in Table 2 of UL 95

Markings:

The battery control assembly must include appropriate markings to indicate its intended use, the maximum voltage and current ratings, and the temperature limits. These markings must be in accordance with the requirements specified in Table 3 of UL 95

Environmental Considerations:

The battery control assembly must be designed to operate reliably in the environmental conditions specified in Table 4 of UL 95 The assembly must also be able to withstand the environmental stress specified in Table 5 of UL 95

Conclusion:

UL 957 is a crucial standard for ensuring the safety and performance of power-operated dispensing devices. By following the key requirements outlined in this article, manufacturers, retailers, and consumers can ensure that their devices meet the necessary safety standards and minimize the risk of electrical hazards.