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1. IEC 61439-1: General principles for low-voltage switchgear and controlgear
- This standard specifies the general requirements and guidelines for low-voltage switchgear and controlgear. It includes provisions for the design, material selection, manufacturing process, test methods and scope of application of the equipment. The main purpose of this standard is to ensure good performance and safety of low-voltage equipment during installation and use.
2. IEC 61439-2: Requirements for low-voltage switchgear and controlgear assemblies
- This standard specifies the requirements for low-voltage switchgear and controlgear assemblies in detail, including provisions for layout, design, selection and installation. The standard also includes requirements for rated current, short-circuit capacity, thermal stability and mechanical properties to ensure that the equipment can work properly under normal and abnormal conditions.
3. IEC 61439-3: Tests for low-voltage switchgear and controlgear assemblies
- This standard specifies various tests and acceptance criteria for low-voltage switchgear and controlgear assemblies. The test content includes tests on electrical performance, mechanical performance, environmental adaptability and insulation performance to ensure that the equipment meets relevant requirements and standards.
4. IEC 61641: Seismic performance of low-voltage switchgear and controlgear
- This standard mainly deals with the stability and safety requirements of low-voltage switchgear and controlgear under seismic conditions. The standard includes provisions for the structure and fixing method of the equipment to ensure that the equipment will not be damaged or overturned during an earthquake.
5. IEC 60947: Requirements and tests for low-voltage complete switchgear and controlgear
- This standard specifies the functional requirements, electrical performance requirements and test methods for low-voltage complete switchgear and controlgear. The standard also includes provisions for the working environment, insulation performance, short-circuit protection and overload protection of the equipment to ensure that the equipment can operate normally and protect personnel safety under various working conditions.
The comprehensive content of these international design standards covers all aspects of low-voltage cabinet design, manufacture and testing, aiming to ensure the safety, reliability and compliance of the equipment with international standards.
