Eaton 75VCPW-VSR Instruction Book

Contents

18Instruction Book IB02707112EAugust 201550/75VCPW-VSRBreaker To Vacuum Starter Replacement UnitEATON CORPORATION www.eaton.comprocedures are similar. If it is necessary to reference anything in theunit compartment, refer to the original instruction books suppliedwith the assembly.Refer to Figures 3.3 and 3.4, for any parts identification requiredduring these installation procedures.a. The starters faceplate and barriers must be positioned properlyand securely bolted in position, as shown in Figures 3.3 and 3.4,before inserting the starter into the cell.b. Carefully follow the insertion procedure in section 5 to getthe VSR unit into the test position inside the compartment andto engage the secondary contacts to proceed with the electricaloperations check. WARNINGAS SOON AS THE SECONDARY CONTACTS MATE UP, THE STARTER ISREADY FOR OPERATION IF THE CONTROL CIRCUIT IS ENERGIZED.c. Once the starter is in the test position, it may be electricallyclosed and tripped by using a control switch on the cell door, or itmay be manually tripped by means of the trip button, located on thefaceplate of the starter.5.9 CELL CODE / REJECTION PLATE INSTALLATIONCell code plates and circuit breaker rejection plates are required toreject circuit breakers and breaker to vacuum starter replacementunits that do not match the electrical rating structure of the existingcell. If the momentary rating of a unit is increased, a code plate anda cell rejection plate must be installed to accept the new unit andreject all others of lesser ratings. If momentary ratings of the newunit is the same as the original breaker, then the original cell codeplate may be retained.A unit code plate is factory installed on VSR-series units. Cell codeplates are automatically furnished with each unit. (Rejection plateshave stamped orientation as “LH” and “RH” for clarity.) (Figure 5.5) NOTICEREJECTION PLATES MUST BE INSTALLED INTO THE PROPER INTENDEDSWITCHGEAR PER THE NAMEPLATE RATING. IF THE REJECTION PLATE ISNOT INSTALLED CORRECTLY THE VSR CAN NOT BE INSERTED INTO THEINTENDED STRUCTURE. WARNINGARC FLASH INCIDENCES WITH MV SWITCHGEAR CAN OCCUR DURING THEPROCESS OF INSERTING AND REMOVING VSR UNITS IN SWITCHGEARCUBICLES. IT IS STRONGLY RECOMMENDED THAT PROPER PPE(PERSONAL PROTECTIVE EQUIPMENT) BE WORN BY PERSONNEL WHORACK UNITS USING THE MANUAL RACKING HANDLE OR THE ROTARYRACKING HANDLE. EATON CORPORATION PROVIDES A UNIVERSALREMOTE POWER RACKING SYSTEM (RPR-2) WHICH IS COMPATIBLE WITHTHE INTERNAL ROTARY RACKING UNITS. THIS SYSTEM MAY ALLOWPERSONNEL TO WEAR A LOWER LEVEL OF PPE DURING THE INSERTIONOR REMOVAL PROCESS AS LONG AS RACKING CAN BE PERFORMED FROMOUTSIDE THE FLASH PROTECTION BOUNDARY.5.10 INSERTION PROCEDURE WARNINGEXAMINE THE INSIDE OF THE CELL BEFORE INSERTING THE STARTERFOR EXCESSIVE DIRT OR ANYTHING THAT MIGHT INTERFERE WITH THESTARTER TRAVEL.KEEP HANDS OFF THE TOP EDGE OF THE FRONT BARRIER WHEN PUSHINGA STARTER INTO A CELL. FAILURE TO DO SO COULD RESULT IN BODILYINJURY, IF FINGERS BECOME WEDGED BETWEEN THE STARTER ANDTHE CELL. USE BOTH FULLY OPENED HANDS FLAT ON THE FRONT OF THESTARTER TO ADVANCE INO THE STRUCTURE.If the VCPW-VSR is being inserted into an upper compartment orwill be positioned in a lower compartment without the use of adrawout ramp or dockable dolly, the extension rails must first beput in position. Carefully engage the left and right extension rails tothe fixed structure rails and ensure they are properly seated in place(Figure 5.6). Once the extension rails are properly in place, the VSRcan be carefully loaded on the extension rails using an overhead lifterand lifting yoke. Remove the lifting yoke when the VSR is securelyseated on the extension rails.Push the VSR into the compartment until the TEST position isreached as confirmed by a metallic sound of the racking latchengaging the racking nut (Figures 5.7). Once the VSR is in the TESTposition, the extension rails can be removed.To engage the secondary contacts, raise the handle to thesecondary disconnect cage and pull the cage forward as far aspossible (Figure 5.8). As soon as control power is available, themotor will start charging the closing springs.Figurt 5.5. VCPW-VSR RtjtcoiNn Plaot (230A VSR ShNwn)Figurt 5.4. VCPW-VSR CNdt Plaot (250MVA VSR ShNwn)