Q&A(FAQ) What is IEC62368-1?
IEC 62368-1 is an international safety standard for information technology (ICT) and audio/video equipment operating at rated voltages of up to 600 V.
Based on this standard, related national standards such as EN 62368-1 in Europe and UL 62368-1 in the United States have been established.
Power supplies used as components in electronic equipment are generally treated as part of ICT equipment; therefore, they are considered subject to the IEC 62368-1 requirements.
Main Requirements of the Standard
IEC 62368-1 specifies detailed safety requirements in the following areas:
- -Markings and instructions
- -Compliance of components
- -Protection against electric shock
- -Mechanical safety
- -Temperature and electrical performance
- -Connection to telecommunication networks
Among these, the requirements for protection against electric shock are particularly strict, with detailed specifications that extend to the internal structure of power supplies and their components.
In addition, for switching power supplies, the standard specifies maximum temperature rise limits for transformers used inside the equipment.
These limits are determined by the insulation class of materials such as magnet wire and insulating tape. Temperature measurements are carried out using thermocouples.
| No | Insulation class | Max. Allowable Temp. [℃] | |
|---|---|---|---|
| Normal operation | Overload condition | ||
| 1 | A | 100 | 150 |
| 2 | E | 115 | 165 |
| 3 | B | 120 | 175 |
| 4 | F | 140 | 200 |
| 5 | H | 165 | 225 |
COSEL prepares a CB Test Report, as well as UL and EN certifications for each product, and declares conformity with the Low Voltage Directive (LVD).