| 摘要 |
<p>A combination apparatus of a distribution transformer and switches comprising a three-phase five-leg distribution transformer, wherein the low voltage windings of the transformer are connected in Y0 connection mode, and each phase of high voltage winding of the distribution transformer is serially connected with high voltage fuses so as to constitute a high voltage phase-arm. The three phases of high voltage phase-arms are connected in DELTA connection mode. The combination apparatus of a distribution transformer and switches can be utilized either in neutral non-grounded power system, or in a power system whose neutral is grounded through arc-suppression coils or little resistors, and further it can be utilized in a power system whose neutral is directly grounded. It can be ensured that the normal power supply of the sound phases are not interfered by faulty phases. <IMAGE></p> |
