Eaton VisoVac Instruction Manual

1015kV Class Padmount VisoVac™instruction manual MN024004EN April 2021Sequence of operations – V1 Style SwitchgearV1 style padmount switchgear only comes with vacuum interruption. VFI ways and switch ways can only be opened andclosed. Electrical interconnections vary depending on the application.In this position, the vacuum interrupters are CLOSED. ThisModel 9-V1example assumes all ways are energized andSW-1 is the only source way. VFI-1+ are all load breakersand with no load side sources. See Figure 21.ote:N Red represents energized bus and green representsde-energized bus.LOAD BUSSW-1Source LoadsVFI-1 VFI-2 VFI-3Figure 20 MODEL 9-V1 Single Line DiagramVFI-1+SW-1LoadsSourceFigure 21 V1 style padmount – All ways CLOSEDIn this position, the vacuum interrupters are OPEN. Exampleassumes all load ways (VFI-1+) are de-energized with noload-side sources and SW-1 is the only source way. SW-1 isOPEN, however the incoming source cable to the gear willbe energized. See Figure 22.WARNINGThe cables connected to all bushings, any control powersources or stored energy devices such as capacitorsmust be de-energized/discharged before gear isconsidered de-energizedVFI-1+SW-1LoadsSourceFigure 22 V1 style padmount – All ways OPEN