01742nam 2200349 450 991013576890332120231206190641.00-7381-0907-X10.1109/IEEESTD.1980.8704479(CKB)3780000000089305(NjHacI)993780000000089305(EXLCZ)99378000000008930520231206d1980 uy 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierANSI/IEEE Std C57.13.1-1981 IEEE Guide for Field Testing of Relaying Current Transformers /Institute of Electrical and Electronics EngineersNew York, New York :IEEE,1980.1 online resource (17 pages)A description is given of field-test methods that will ensure that the current transformers used as a source of relay input current are connected properly, are of marked ratio and polarity, and are in condition to perform as designed both initially and after a period of service. The standard covers safety considerations; current transformer types and construction and the effect of these on test methods; insulation resistance tests; ratio tests; polarity check; winding and lead resistance (internal resistance); excitation tests; burden measurements; and specialized situations.ANSI/IEEE Std C57.13.1-1981: IEEE Guide for Field Testing of Relaying Current TransformersCurrent transformers (Instrument transformer)Current transformers (Instrument transformer)621.314NjHacINjHaclDOCUMENT9910135768903321ANSI2072434UNINA