How to design frequency converters simultaneously for EMC and safety regulations?

EMC and safety design for frequency converters must be carried out simultaneously, as they are interconnected and may conflict. Safety regulations focus on personal and equipment safety, such as insulation, creepage distance, leakage current, and grounding; EMC focuses on electromagnetic interference and immunity. Key points for simultaneous design include: In filter design, the selection and installation location of safety X/Y capacitors must meet safety standards for withstand voltage, leakage current, and failure modes, while also satisfying EMC filtering requirements. Grounding design must simultaneously meet the requirements of safety grounding (protective grounding) and EMC grounding (noise discharge), typically achieved through reliable chassis grounding.

Insulation design must ensure sufficient clearances and creepage distances, which may limit the installation space for EMC shielding pads or filters. The selection of isolation devices must simultaneously meet isolation withstand voltage (safety regulations) and common-mode transient suppression capability (EMC). The selection of surge protection devices must consider their safety certifications and performance. EMC and safety requirements should be incorporated into the design specifications and reviewed collaboratively from the initial design stage. By utilizing devices from Eintech that combine safety certifications and excellent EMC performance, the difficulty of simultaneous design can be simplified, ensuring that the product passes both certifications at the same time.