Eaton VCP-W Series Instructions For Installation/operation/maintenance/servicing

Also see for 120VCP-W25: Installation, operation and maintenance Instructions for installation, operation and maintenance

Contents

33Instruction Booklet IB131006ENEffective March 2019Instructions for installation,operation, and maintenance of typeVCP-W vacuum circuit breakersEATON www.eaton.comBreaker pan assembly:Call out descriptions for Figure 12 and 13.1. Grounding contact grounds the breaker in the DISCONNECT,TEST, and CONNECTED positions.2. The levering system prevents removal of the breaker in anyposition other than the DISCONNECT position (BPI pan) orDISCONNECT/TEST position (non-BPI pan).3. The control wiring is arranged for pullout disconnecting by meansof a 25-point female receptacle arranged to connect to a maleplug on the breaker. The secondary disconnect is the connectionfor the control leads between the removable breaker and thestationary housing.Automatic secondary: Figure 12 represents an automaticallyengaged secondary, as offered on the BPI pan assembly,requires no manual input from the customer to engage thesecondary harness. The secondary harness will engage auto-matically when the breaker is levered-in to the discrete TESTposition.The secondary harness will then disengage automatically whenthe breaker returns to the DISCONNECT position.Manual secondary: Figure 13 represents a manually engagedsecondary assembly which requires the customer to engagethe secondary harness manually when the breaker is in theDISCONNECT position. When engaged, the breaker will now bein the TEST position.Automatic/manual hybrid secondary (optional): Figure 46represents an automatic engaging secondary with a manualrelease feature incorporated into the BPI pan assembly. Itrequires the customer to manually lift up the secondary releaselever to allow the secondary harness to engage the breaker inthe DISCONNECT/TEST position.The secondary harness will then disengage automatically whenthe breaker returns to the DISCONNECT/TEST position.4. Racking screw performs breaker insertion and withdrawal.5. Moving block couples to breaker for insertion and withdrawal.6. Slider is used with #8 to prevent levering a closed breaker. Mayalso be used in conjunction with #12 to padlock a breaker ineither position.7. Indicates when the breaker is in the fully connected position.Breaker position indication (BPI) label: Figure 12 representspositive indication of breaker location at any position through useof a colored label mounted on the top flange of the right hand railassembly. Green indicates the DISCONNECT position, yellowindicates the TEST position, and red indicates the CONNECTposition. Upon arriving at any of the three discrete positions;DISCONNECT, TEST, and CONNECT, there is a black mark thataligns with the breaker cover to indicate exact location.Standard indication: Figure 13 represents positive indicationof the breaker in the CONNECT position by use of a red flagthat rotates into viewing position when the breaker is fullyconnected.8. Slider interlocks:BPI pan assembly: Figure 12 displays the “L” shaped sliderinterlock that enables tripping of a closed breaker by pushing inon the slider (item 6) that prevents access to the racking screw.Non-BPI pan assembly: Figure 13 displays the “Z” shapedslider interlock that prevents a closed breaker from being leveredout of the cell.9. The breaker mechanism-operated cell (MOC) switch is anassembly of switches that is operated by a lever on the breakermechanism. It can contain as many as 15 normally closed and15 normally open contacts (beneath the cover) in the standarddesign.The MOC switch is activated by the breaker closing. It extendsa plunger out the bottom of the mechanism and pushes down onthe MOC switch operating mechanism. This, in turn, transmitsthe motion to operate the switch.10. The truck operated cell (TOC) switch has nine poles - fournormally open and five normally closed contacts that changestate as the breaker is levered to the connected position. As thebreaker is being levered into the connected position, a bracketon the breaker pushes the TOC switch lever during the last inchof travel. As a result, the TOC switch can be used to electricallyindicate whether or not the breaker is in the connected position(beneath cover).11. Code plates: (see Interface interlocks/interfacing check, Section4.9.1).12. Provision for padlocking a breaker in any position. Also a locationfor a key interlock.13. Picture frame provides a closed barrier to the primary compart-ment when the breaker is connected.14. Rail on which the breaker rolls.15. Optional MR2 integral racking provisions for inclusion duringmanufacturing or aftermarket.For additional information on the levering mechanism, refer to para-graph 5.6 in this manual.4.8.2 Circuit breaker performance check1. Study and understand the electrical drawings furnished witheach switchgear system.2. Install the circuit breaker in the DISCONNECT position.3. Engage secondaries or lever breaker to TEST position to auto-matically engage secondaries:Automatic secondary: To engage secondary harness, lever thebreaker to the TEST position to engage the control circuit.Manual secondary: To engage secondary harness, lift and pullthe secondary disconnect forward to engage the control circuit.ote:N It is recommended that the power to the secondary connectorbe de-energized prior to manually engaging the secondaries to preventdamage to the secondary pins associated with the spring charging motorcircuit.Automatic/manual hybrid secondary (optional): To engagesecondary harness, lift and release the secondary disconnect sothat it automatically slides forward to engage the control circuit.4. Verify breaker operation; once the secondaries are engaged theclosing springs will automatically charge unless inhibited by theswitchgear control circuit, the condition will be indicated by aSpring Charged/Discharged indicator on the front of the circuitbreaker (Figure 7). In addition, the status of the main contacts,open or closed, is indicated on the front of the circuit breaker.Close and trip the circuit breaker several times to verify closingand tripping operations. Conclude by closing the circuit breaker.The circuit breaker is now closed in the TEST position withsprings charged.