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

2.2.1 System and Equipment Standard

System and equipment standards are the controlling standards to regulate the safety of the system operation in the end equipment. This standard covers a variety of safety concerns, such as insulation, pressurized gases, and so forth. For example, the IEC 62477-1 standard is for power electronic converter systems and equipment, the IEC 62109-1 standard is for power converters used in photovoltaic power systems, the IEC 61010-1 standard is for medical equipment, and the IEC 60950 standard is for information technology equipment. System and equipment standards set performance levels (such as clearance and creepage) for specific conditions. Take a solar system for example, the IEC 62109-1 standard requires minimum clearance and creepage values that the design of the system must satisfy (such as an isolator, PCB, and other components related to high voltage). Therefore, the system and equipment standards also determine the specifications of the components based on the safety requirements of the system. Therefore, an evaluation of the system and equipment standards includes an evaluation of the related component standards.