What is UL 1172 ?

Title: What is UL 1172 and UL 1178? A Comprehensive Guide

UL (Underwriters Laboratories) is a global safety science organization that provides testing, certification, and inspection services. The two key standards that we will discuss in this article are UL 1172 and UL 117These standards are critical for ensuring the safety and performance of various products, including microwave ovens and fuel dispensers. In this article, we will delve into the purpose and key requirements of both UL 1172 and UL 1178, providing a comprehensive guide for readers.

What is UL 1172?

UL 1172 is a technical standard developed by UL to address the safety concerns associated with the use of microwave ovens. The standard aims to minimize the risk of fire, electric shock, and other hazards associated with the operation of these appliances. It focuses on various aspects such as electrical components, radiation emissions, insulation, and overall construction quality to guarantee safe operation for consumers.

Key Requirements of UL 1172:

To obtain UL certification for a microwave oven, manufacturers must comply with the key requirements outlined in UL 117These requirements include:

Electrical Components: The electrical components of the microwave oven must be listed in UL 1063, which is a standard for electrical safety. The components must also meet various safety distances and requirements for overheating.

Radiation Emissions: The microwave oven must emit no more than 125 milliwatts of power per cu ft of cabinet area.

Insulation: The insulation of the microwave oven must be non-reactive and must not allow more than a 150-volt insulation resistance between any two points.

Overall Construction: The microwave oven must be constructed of fire-resistant materials that are free from any flammable materials, such as wood, paper, or plastic.

User Safety: The user interface of the microwave oven must be designed to minimize the risk of electric shock or other injuries.

UL 1178:

UL 1178 is a technical standard developed by UL to address the safety requirements for power-operated dispensing devices used in industrial and commercial environments. These devices, commonly known as "fuel dispensers, " play a crucial role in many industries by efficiently and accurately dispensing fuel, such as gasoline or diesel, to vehicles or equipment.

Key Requirements of UL 1178:

To obtain UL certification for a fuel dispenser, manufacturers must comply with the key requirements outlined in UL 117These requirements include:

Electrical Components: The electrical components of the fuel dispenser must be listed in UL 1063, which is a standard for electrical safety. The components must also meet various safety distances and requirements for overheating.

Safety Measures: The fuel dispenser must include safety measures such as automatic shut-off switches, circuit breakers, and overcurrent protection devices.

Performance Criteria: The fuel dispenser must meet performance criteria such as fuel flow rate, pressure, and temperature.

Design Guidelines: The design of the fuel dispenser must adhere to guidelines that ensure safe operation, including the use of fire-resistant materials and the location of electrical components.

Conclusion:

UL 1172 and UL 1178 are critical standards for ensuring the safety and performance of various products, including microwave ovens and fuel dispensers. By adhering to the key requirements outlined in these standards, manufacturers can minimize the risk of hazards associated with their products, ultimately providing a safer and more reliable experience for consumers.