Eaton VFI Installation, Operation And Maintenance Instructions

Also see for VFI: Installation and maintenance instructions

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Eaton VFI Installation, Operation And Maintenance Instructions Manual pdf 6 page image

2Type VFI, Fluid-insulated SwitchgearINSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS MN285006EN March 2018Electronic controlLine current is sensed by internally mounted currentsensing transformers. When current in excess of theminimum trip value is detected, the control initiates a signalwhich trips the faulted phase or phases, as applicable.Refer to the applicable Installation and Operation manualsfor control operation and setting procedures.For Tri-Phase and TPG Controls:● MN285008EN: Tri-Phase, TPG and TPG with SCADAElectronic Control, Installation and Operation Instructions.For Edison Idea Relays:● CA165005EN: iTAP-265 Dual Overcurrent Relay● Service Information S165-260-1, Use and OperationsManual for the iTAP-260 Underground Distribution VFISwitchgear Controller.● CA165002EN: iDP-210 Feeder Protection RelayLoadbreak switchIn many configurations the Type RVAC switch is integratedwithin the VFI switchgear. Refer to the Operation sectionof MN285005EN Type RVAC Fluid-Insulated VacuumSwitchgear; Installation, Operation, and MaintenanceInstructions for operation information for the RVAC switch.Vacuum fault interruptersLoad and fault interruption takes place within sealed vacuuminterrupters (Figure 1). Vacuum interrupters provide fast, lowenergy arc interruption and produce no arcing by-products tocontaminate the insulating fluid.Figure 1 Vacuum fault interupter assemblyBushings600 A deadbreak aluminum type bushings, when furnished,conform to IEEE Std 386™-2006 standard. The standard200 A interface for 15 and 25 kV class undergrounddistribution switchgear is an Eaton’s Cooper Power series200 A bushing well. For 35 kV class, the standard 200 Ainterface is an Eaton’s Cooper Power series 200 A one-pieceloadbreak bushing. Both conform to IEEE Std 386™-2006standard.Bushings are mounted in-line and are located a minimum of610 mm (24 inches) above the pad.13Figure 2 VFI switchgear componentsFluid Drain Plug and Sampler(not visible in view)Grounding Lugs(not visible in view)BushingsWellsTri-PhaseControlRecessed Lifting Provisions(not visible in view)Interruptor Operating Handle Fluid Level Sight GlassSemaphoresOperation One-LineDiagramTri-PhaseControlFlux ShiftTripperVacuum FaultInterrupter