T/SXJD 14-2020 (English Version) PDF

Scope: The existing domestic standards ZBY097-82 "Technical Conditions for Precision Current Transformers" and JB/T5472-1991 "Instrument Current Transformers" are only formulated for standard transformers. There are no regulations on the use of precision measurements, and the accuracy level is not high. The test The project is not perfect and cannot meet today's requirements for measurement, verification and on-site inspection. Therefore, the name when the project was established was "Technical Conditions for Precision Current Transformers". 1. Scope of application of the standard This standard is applicable to 0.005 (S) ~ 0.1 (S) current transformers with rated frequency of 50Hz or 60Hz, rated voltage of 35kV and below, used as standard transformers and precision measurement. Not applicable For double-stage current transformers and current comparators. 2. Regarding the main technical indicators: According to the current needs for current transformer measurement, verification and on-site inspection, the accuracy level has been expanded: 0.005(S), 0.01(S); 0.02(S); 0.05(S); 0.1(S) level .

T/SXJD 14-2020 history