FIELD: electricity.
SUBSTANCE: three-phase balun is proposed, wherein the three-phase three-legged transformer comprises two or three primary windings included counter in the zigzag . The free leads of the first windings are connected to the input and output terminals through the three-phase automatic switch, and the free leads of the second windings are connected into a common zero point to couple the phase loads. The throttle filter of the residual currents is included between the zero output of the power line and the zero output of the three-phase transformer.
EFFECT: higher reliability.
2 dwg
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