This standard specifies the sampling inspection of import and export current transformers and the determination of inspection results. This standard is applicable to the inspection of inlet and outlet current transformers with a frequency of 15 Hz-100 Hz and a rated voltage not greater than 500 kV, used for electrical measuring instruments and electrical protection devices. This standard does not apply to the inspection of imported and exported precision current transformers.
SN/T 1093-2002 history
2013SN/T 1093-2013 Rules for the inspection of current transformers for import and export
2002SN/T 1093-2002 Rules for the inspection of current transformers for import and export