| 摘要 |
A VFI(Vacuum Fault Interrupt) transformer is provided to enhance efficiency of a mounting space by downsizing the vacuum fault interrupt transformer by collectively controlling a single phase and three phases through integrating a vacuum fault interrupter to the VFI transformer. A VFI transformer supplies power after transforming high-voltage power supplied from a power supply system into low-voltage power. A vacuum fault interrupter for interrupting the power supplied from the power supply system protrudes on a body of the VFI transformer. The vacuum fault interrupter interrupts and protects an overcurrent supplied to the VFI transformer with a Kyle vacuum interrupter instead of a fuse. The vacuum fault interrupter has a continuous current transfer ability. In case that a fault occurs when the vacuum fault interrupter is actuated, a trip free protects a mechanism in a running position.
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