随着现代电子设备的广泛应用，电力系统中的谐波电流问题越来越突出。谐波电流会导致电力系统中的电压失真，从而影响电力设备的正常运行，甚至会对公共低压系统造成损害。因此，IEC 61000-3-12:2011+AMD1:2021 CSV标准的出现，对于保障公共低压系统的稳定性和安全性具有重要意义。

IEC 61000-3-12:2011+AMD1:2021 CSV标准规定了连接到公共低压系统的设备产生的谐波电流的限制。该标准适用于输入电流大于16A且小于等于75A的单相和三相设备。标准中规定了不同频率下的谐波电流限值，以及在不同电流水平下的限制要求。同时，标准还规定了测试方法和测量程序，以确保设备符合标准的要求。

IEC 61000-3-12:2011+AMD1:2021 CSV标准的实施，可以有效地减少公共低压系统中的谐波电流，保障电力设备的正常运行，同时也有助于提高电力系统的能效。该标准的实施对于电力设备制造商、电力系统运营商以及电力用户都具有重要意义。

相关标准
- IEC 61000-3-2:2019 CSV Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic current emissions (equipment input current ≤16 A per phase)
- IEC 61000-3-4:2018 Electromagnetic compatibility (EMC) - Part 3-4: Limits - Limitation of emission of harmonic currents in low-voltage power supply systems for equipment with rated current greater than 16 A
- IEC 61000-3-6:2018 Electromagnetic compatibility (EMC) - Part 3-6: Limits - Assessment of emission limits for the connection of distorting installations to MV, HV and EHV power systems
- IEC 61000-3-11:2019 Electromagnetic compatibility (EMC) - Part 3-11: Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤16 A per phase and not subject to conditional connection
- IEC 61000-4-7:2020 Electromagnetic compatibility (EMC) - Part 4-7: Testing and measurement techniques - General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto