| 摘要 |
FIELD: relay protection. ^ SUBSTANCE: device has three converters of current for phases A, B, C, analog signals commutator, OR element, time, circuit for comparing three electric values, block for operation with three-phase short-circuits, blocking block, executing organ, three switches, and also inserted are three delay lines and six subtracters. ^ EFFECT: higher sensitivity. ^ 1 dwg |
