What are the national standards that the PMS (Power Measurement System) EMC (Electrical Measuring Switch) must comply with?

As power measurement and control equipment, power supply systems (PSS) are required or recommended to comply with a series of national EMC standards (GB/T) in the Chinese market. Most of these standards are equivalent to or modified versions of IEC international standards. Key relevant national standards include: GB/T 17626.2 "Electrostatic Discharge Immunity Test" (equivalent to IEC 61000-4-2); GB/T 17626.4 "Electrical Fast Transient/Bulk Immunity Test" (equivalent to IEC 61000-4-4); GB/T 17626.5 "Surge (Impulse) Immunity Test" (equivalent to IEC 61000-4-5); GB/T 17626.6 "Immune to Conducted Disturbances Induced by Radio Frequency Fields" (equivalent to IEC 61000-4-6); and GB/T 17626.8 "Power Frequency Magnetic Field Immunity Test" (equivalent to IEC 61000-4-8). Regarding emission standards, it must comply with GB/T 9254 "Limits and Methods of Measurement for Radio Interference from Information Technology Equipment" (equivalent to CISPR 32/EN 55032). Furthermore, industry standards such as DL/T "Electric Power Industry Standards" may have additional requirements for PMS. Product design must be based on these standards, and testing must be conducted in a CNAS-accredited laboratory to obtain compliance reports.