| 摘要 |
FIELD: electrical engineering; instrument transformers for current measurements. ^ SUBSTANCE: proposed current transformer that has magnetic circuit, primary winding and secondary winding is characterized in that its magnetic circuit has a number of cores wound of ferromagnetic ribbon, placed one on top of other by end surfaces or concentrically inserted in one another and separated by nonmagnetic spacers. Secondary winding is wound on magnetic circuit built of a number of separate cores so that part of secondary turns passed in through holes of nonmagnetic spacers encloses at least one of mentioned cores. ^ EFFECT: reduced absolute current error throughout entire range of measured currents and range of loads connected to measuring winding. ^ 1 cl, 3 dwg |
