What are the national standards that power FTUs and power terminals must comply with for EMC?

The national standards for EMC compliance of FTU power terminals mainly include: GB/T 17626 series (corresponding to IEC 61000-4 series) immunity standards; GB/T 9254 (corresponding to CISPR 32) radiated emissions standards; and GB/T 14598 (corresponding to IEC 60255) protective relay standards. Specifically: GB/T 17626.2 (ESD), GB/T 17626.4 (EFT), GB/T 17626.5 (surge), and GB/T 17626.8 (power frequency magnetic field). Products must pass testing by a nationally accredited laboratory and obtain a test report. The design should refer to national standard limits to ensure compliance with the power industry's EMC requirements and guarantee the stable operation of the power grid.