What are the national standards for power fuses?

Overview

As an important electrical protection component, power fuses are widely used in various electrical equipment. Its main function is to automatically cut off the circuit when the current rises abnormally, thereby protecting the electrical equipment from damage. In order to ensure the quality and safety of power fuses, various countries have formulated corresponding national standards. This article will introduce the national standards for power fuses in detail to help relevant companies and engineers better understand and comply with these specifications.

1. GB/T 13850-2017 "Varistors for electrical devices"

This standard specifies the terminology, classification, technical requirements, test methods, etc. of varistors for electrical devices. As part of an electrical installation, the performance and quality of power fuses rely heavily on the varistors used with them. Therefore, understanding and complying with the GB/T 13850-2017 standard is crucial to ensuring the overall performance of power fuses.

2. GB/T 14485-2018 "Circuit Protection Devices Part 2: Electrical Plastic Case Circuit Breakers for Circuit Protection of Electrical Equipment"

This standard specifies the terminology, classification, technical requirements, test methods, etc. of electrical plastic case circuit breakers for circuit protection of electrical equipment. Power fuses are sometimes used in conjunction with circuit breakers to protect circuits. Therefore, understanding the GB/T 14485-2018 standard can help ensure the compatibility of power fuses and circuit breakers.

3. GB/T 1984-2014 "Combustion Test Methods for Electrical Wires and Cables"

This standard specifies the combustion test methods for electrical conductors and cables, including vertical combustion tests, horizontal combustion tests, etc. Electrical fuses are usually made of electrically conductive materials, so their combustion properties are also an important consideration. Complying with the GB/T 1984-2014 standard can ensure the safety of power fuses in the event of fire.

4. GB/T 3859.2-2020 "Semiconductor Converters Part 2: Fuses"

This standard specifies the terminology, classification, technical requirements, etc. of fuses for semiconductor converters. In power electronics, power fuses are often used as fuses to protect semiconductor converters from current overloads and short circuits. Therefore, understanding and complying with the GB/T 3859.2-2020 standard is of great significance to ensure the stability and safety of power electronic equipment.

5. GB/T 3906-2011 "AC metal-enclosed switchgear and control equipment"

This standard specifies the terminology, classification, technical requirements, etc. for AC metal-enclosed switchgear and control equipment. Power fuses are usually installed in metal-enclosed switchgear, so their size and performance must comply with the requirements of the GB/T 3906-2011 standard.

6. GB/T 15576-2008 "AC High Voltage Fuse"

This standard specifies the terminology, classification, technical requirements, etc. of AC high-voltage fuses. For power fuses in high-voltage power systems, compliance with the GB/T 15576-2008 standard can ensure that they can withstand current and voltage changes in high-voltage environments.

7. GB/T 3357.1-2017 "Wires and Cables Part 1: General Provisions"

Although this standard mainly stipulates the general requirements for wires and cables, as a part of wires and cables, the material and quality of power fuses should also comply with the provisions of this standard. Therefore, understanding and complying with the GB/T 3357.1-2017 standard helps ensure the overall quality of power fuses.

8. Other relevant standards and regulations

In addition to the above-mentioned main standards, there are some other relevant standards and regulations also related to power fuses, such as ISO/IEC 8846 (General Rules for Fuses), IEEE C62.4 (Fuses for AC Circuits), etc. These standards and regulations provide additional guidance and requirements regarding the design, manufacture, testing and use of electrical fuses.

The national standards for power fuses cover all aspects of their design, manufacturing, testing and use. Understanding and complying with these standards is important to ensure the performance and quality of electrical fuses. At the same time, with the continuous development of technology and the continuous expansion of application fields, these standards are constantly updated and improved. Therefore, relevant companies and engineers need to pay close attention to the latest developments in standards to ensure that their products and services always meet the requirements of national standards.