Eaton VacClad-W Instruction Booklet

Also see for VacClad-W: Instructions for installation, operation, maintenance

22Instruction Booklet IB32267ARCEffective December 2010VacClad-W 38 kV arc-resistantswitchgear indoor housingseaton Corporation www.eaton.com8.9 Voltage transformers with fusesThe drawout fused VT assembly (Figure 15) is a removable element,consisting of a voltage transformer(s) with integral fuse(s) installedin a fuse tube assembly The fused VT assembly(s) is mounted on adrawout drawer assemblyThe drawout drawer assembly is installed by rolling the assemblyinto the cubicle until the rear flange of bottom pan contacts thestops on the cubicle floor (Figure 14) CAUTIONTHE FUSED VT ASSEMBLY MUST BE IN THE FORWARD (DISCONNECTPOSITION) BEFORE INSTALLING THE DRAWOUT ASSEMBLY.After installation, front cover (see Figure 14) is installed using5/16-18 nuts, lock washers, and flat washersThe standard breaker levering crank is used to rack the assemblyto the connect position The levering crank is inserted through theaccess hole on the front cover onto the levering screw hex drive Asthe carriage reaches the connect position, the eight pole moving andstationary secondary contacts mate primary contact is made withplunger type contacts on the fuse tube assemblyRacking the levering screw counterclockwise will move the drawoutassembly to the withdrawn position Ground contacts on the frontcover automatically ground and discharge the primary fuses Aviewing window provides visual indication of the drawoutassembly and fuse groundingInterlocks prevent removal of the front cover when the drawoutdrawer assembly is not in the withdrawn position and preventinsertion of the drawout drawer assembly when the cover isnot in placeSection 9: accessories9.1 Standard accessoriesEach new switchgear lineup is supplied with a set of standardaccessories (see Figures 29–32)Figure 29. Fifth WheelFifth wheel is used for maneuvering the circuit breaker duringinsertion or removal from cellFigure 30. Spring Charging HandleSpring charging handle is used for manually charging the breakerclosing springFigure 31. Levering CrankLevering crank is used for moving the breaker between theconnected and disconnected positionsFigure 32. Test JumperTest jumper is used for electrically operating the circuit breakerwhen it is outside its compartment The test jumper is approximately10 feet (3m) long It is provided with an electrical connector thatmatches circuit breaker secondary plug on one end and anotherconnector that matches cell disconnect block on the other endThe test jumper is manually installed to connect breaker controlwiring with cell wiring, thus allowing electrical operation of thecircuit breaker via cell controls, as if the breaker were in thetest position within the cell