SDAA213 June   2026 ISO1042 , ISO1050 , ISO1410 , ISO6440 , ISO6440-Q1 , ISO6441 , ISO6441-Q1 , ISO6442 , ISO6442-Q1 , ISO7740 , ISO7741 , ISO7741-Q1 , ISO7742 , ISO7742-Q1 , ISO7831 , ISO7842

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Distinguish Different Safety Standards
    1. 2.1 Hierarchical Relationships of Safety Standard Governing Agencies
    2. 2.2 Types of Safety Standards
      1. 2.2.1 System and Equipment Standard
      2. 2.2.2 Component Standards
      3. 2.2.3 Coordination and Support Standards
      4. 2.2.4 The UL 1577 Standard Versus the IEC 60747-17 (VDE 0884-17) Standard
    3. 2.3 Example – Safety Standards in Solar and Energy Storage Systems (ESS)
  6. 3Understanding the Role of the Safety Standards in System Applications
    1. 3.1 Purposes of Safety Requirements
    2. 3.2 Levels of Safety Insulation
      1. 3.2.1 Functional Insulation
      2. 3.2.2 Basic Insulation
      3. 3.2.3 Supplementary Insulation
      4. 3.2.4 Double Insulation
      5. 3.2.5 Reinforced Insulation
    3. 3.3 Example – Safety Requirements of 1500V String Inverter
  7. 4Summary
  8. 5References

2.1 Hierarchical Relationships of Safety Standard Governing Agencies

Figure 2-1 shows the hierarchical relationships of the safety standards governing agencies.

  • The first level.
    • International Electrotechnical Commission (IEC) is the recognized standardization institute in the power electronics industry. This standardization agency develops and publishes international electrical standards for different applications as general safety requirements.
  • The second level.
    • Each country or region implements individual standards and interpretations, and can publish specific regional standards as a result. These regional standards are usually compatible with the first-level IEC standards. Of course, these governing bodies can generate a standard independently, without referring to the IEC standard.
  • The third level.
    • The regional certification institute or agency that completes the corresponding testing and certificate issuance.

Examples of second-level governance agencies are:

  • The USA/Canada safety standard (UL/CSA) of the Unites States and Canada
    • UL/CSA is the agency responsible for testing and certification of the safety standard
  • Verband der Electrotechnical (VDE) of Germany
    • Technischer Ünderachievement (TÜV) and (VDE) are the agencies responsible for testing and certification of the safety standard
  • Certification and Accreditation Administration of the People's Republic of China (CNCA) and Guojia Biaozhun (GB) of China
    • China Quality Certification Centre (CQC) is responsible for testing and certification of the safety standard

Power electronic products or systems sold or used in a country or region must meet the regional standards.

ISO6441 ISO7741 ISO7831 ISO1410 ISO1042 Hierarchical Relationships of the Safety Standard Governing Agencies Figure 2-1 Hierarchical Relationships of the Safety Standard Governing Agencies