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See Chinese contents: GB/T 14549-1993 GB/T 14549-1993: Quality of electric energy supply. Harmonics in public supply network
This Standard specifies the allowable values and test methods for the harmonics in public supply network. This Standard is applicable to the public supply network with AC rated frequency of 50Hz, nominal voltage of 110kV and below. The public supply network with nominal voltage of 220kV can be implemented with reference to 110kV. This Standard is not applicable to the transient phenomena and short-term harmonics.
