What are the domestic and international EMC (electromagnetic compatibility) standards for surgical electrosurgical units?

Surgical electrosurgical units (high-frequency electrosurgical units) are themselves extremely strong sources of electromagnetic interference. The core of their EMC standards (e.g., GB 9706.1, YY 0505 domestically, IEC 60601-1-2 internationally) lies in limiting the electromagnetic interference they generate, ensuring that their interference with other electronic equipment (e.g., monitors, anesthesia machines) within the same operating room is within acceptable limits. The standards strictly specify the radiation and conduction limits for the fundamental and harmonic emissions at their operating frequencies (typically 300kHz-3MHz). Simultaneously, the electrosurgical unit itself must also possess a certain degree of immunity to surges and rapid transients from the power grid.