Eaton Cutler-Hammer VCP-W User Manual Download

Page: 1 / 48

I.B. 3A74792H04

Effective 7/97

Cutler-Hammer

Instructions for Installation, Operation and Maintenance
of Type VCP-W 38kV Vacuum Circuit Breakers

Summary of Contents for Cutler-Hammer VCP-W

Page 1: ...I B 3A74792H04 Effective 7 97 Cutler Hammer Instructions for Installation Operation and Maintenance of Type VCP W 38kV Vacuum Circuit Breakers...

Page 2: ......

Page 3: ...RY OR PROPERTY DAMAGE READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE ATTEMPTING ANY UNPACKING ASSEM BLY OPERATION OR MAINTENANCE OF THE CIR CUIT BREAKERS INSTALLATION OR MAINTENANCE SHOULD BE ATTEMPTED...

Page 4: ...CTION 4 INITIAL INSPECTION AND INSTALLATION 4 1 Introduction 12 4 2 Manual Operation Check 12 4 3 Vacuum Interrupter Integrity 12 4 4 Insulation 12 4 5 Contact Erosion and Wipe 12 4 6 Primary Circuit...

Page 5: ...INTENANCE AND TROUBLESHOOTING 6 1 Introduction 26 6 2 Frequency of Inspection and Maintenance 26 6 2 1 Qualified Personnel 26 6 2 2 Helpful Tools and Accessory Items 26 6 2 3 General Torque Guidelines...

Page 6: ...Representation of Arc Interruption 17 5 4 Closing Cam and Trip Linkage 19 5 5 Charging Schematic 21 5 6 Typical 38kV VCP W DC and AC Control Schematics 22 5 7 Secondary Circuit Breaker Plug Shown Moun...

Page 7: ...S PART OF THE PROCEDURAL STEPS IN THIS DOCU MENT ARE FOR PERSONNEL SAFETY AND PRO TECTION OF EQUIPMENT FROM DAMAGE AN EXAMPLE OF A TYPICAL WARNING LABEL HEAD ING IS SHOWN ABOVE IN REVERSE TYPE TO FAMI...

Page 8: ...rrent 1 Minute Time Rated Current Short Carrying Circuit Capability Current E K I Y kV Class kV rms kV rms kV Peak Amperes kA rms Cycles Seconds kV Peak s kA Peak Amperes kA Amperes rms Amperes rms rm...

Page 9: ...SAME LENGTH AS 2000A CONDUCTORS 35 7 908 REF 17 8 454 11 8 300 11 8 300 64 6 1641 6 14 11 1 283 REF 1 0 26 2 9 75 35 7 908 17 9 454 16 4 417 16 4 417 12 4 314 2 5 9 88 251 5 4 137 1 7 44 CONTACT EROS...

Page 10: ...coupler engaged Failure to disconnect the test coupler could result in an electrical shock leading to death personal injury or property damage Do not work on a closed circuit breaker or a breaker wit...

Page 11: ...deformed insulation and other components File claims immediately with the carrier if damage or loss is detected and notify the nearest Cutler Hammer Office The VCP W 38kV shipping container and palle...

Page 12: ...to be placed in storage maxi mum protection can be obtained by keeping it packed as shipped Before placing it in storage checks should be made to make sure that the circuit breaker is free from shipp...

Page 13: ...ear the floor Indoor storage should be in a building with sufficient heat and air circulation to prevent condensation If the building is not heated the same general rule for heat as for outdoor storag...

Page 14: ...Effective 7 97 Figure 3 4 Front View VCP W 38kV Vacuum Circuit Breaker Front Cover Lift Pull Handle Contact Erosion Indicator Flags Circuit Breaker Wheel Secondary Contact Block Alignment Rollers 3 4...

Page 15: ...10 9 11 12 13 Shock Absorber Shunt Trip Assembly Spring Release Close Coil Assembly Closing Cam Open Close Indicator Operations Counter L H Closing Spring Motor Cutoff Switch R H Closing Spring Openi...

Page 16: ...ive 7 97 Figure 3 6 Rear View VCP W 38kV Vacuum Circuit Breaker Pole Unit Primary Disconnect Insulation Shroud Opening to View Contact Erosion Mark Circuit Breaker Wheel Alignment Rollers TOC Operator...

Page 17: ...ve 7 97 Figure 3 7 Typical VCP W 38kV Escutcheon Manual Charge Socket Spring Charged Discharged Indicator Rating Nameplate Manual Open Button Manual Close Button Open Close Indicator Operations Counte...

Page 18: ...ged If the springs are to be charged on a closed circuit breaker no click is heard at the end of charging operation Discontinue charging and remove the maintenance tool as soon as Charged flag is full...

Page 19: ...he TEST position To engage the secondary contacts grasp the structure mounted secondary disconnect cage handle located below the left side of the circuit breaker and pull it for ward as far as possibl...

Page 20: ...lready closed Figure 5 5 On a closed circuit breaker the interlock lever moves toward the rear In this position the movement of the spring release clapper does not lift the lever and thus the spring r...

Page 21: ...and structural assembly manual are intended to verify safe and proper operation If observed conditions are not as described contact Cutler Hammer for assistance Figure 4 2 Type VCP W Circuit Breaker...

Page 22: ...control circuits with all terminals being of the screw type This section describes the overall operation of the circuit breaker as well as the function and operation of all major sub assemblies and or...

Page 23: ...d fast Figure 5 3 In the closed position current flows through the interrupter When the contacts are opened the arc is drawn between the contact surfaces It is moved rapidly around the slotted contact...

Page 24: ...in the design of all Cutler Hammer vacuum circuit breakers in order to eliminate the need for field adjustments of wipe or stroke THERE IS NO PROVISION FOR IN SERVICE ADJUSTMENTS OF CONTACT WIPE AND S...

Page 25: ...pring charged Figure 5 4b Breaker open and closing spring charged Figure 5 4a Breaker open and closing spring discharged Figure 5 4c Breaker closed and closing spring discharged 9 5 6 4 8 7 3 10 2 1 C...

Page 26: ...ntacts are completely enclosed in the vacuum interrupter and not adjustable in any way a Slow Close capability is not provided with VCP W cir cuit breakers 5 3 4 TRIPPING OPERATION When the trip D sha...

Page 27: ...Pole Shaft Anti Close Interlock Spring Release Close Latch Spring Crank Closing Spring Closing Spring Fixed End Spring Release Close Coil Figure 5 5 Charging Schematic 9 11 5 6 4 8 7 3 10 2 1 12 Cam...

Page 28: ...TION IS CHOSEN AND MAKE THE APPROPRIATE CONNECTIONS AUXILIARY SWITCH 2 OPTIONAL a b b a b a b a b a U24 U19 U20 U21 U22 U23 U16 U17 U18 U15 U1 U9 U8 U7 U6 U5 U4 U3 U2 U10 OPTIONS 6 M WL SPRING CHARGED...

Page 29: ...e across the trip coil is greater than 30 but less than 60 of the voltage rating of its trip coil The circuit breaker can be closed as long as the voltage to the trip coil is maintained at 85 or above...

Page 30: ...s con cerning the use of the levering mechanism to move the circuit breaker into and out of the CONNECTED position within the assembly structure 5 7 OPERATIONS COUNTER All circuit breakers are equippe...

Page 31: ...ective 7 97 2 3 7 8 4 6 1 5 2 5 6 4 8 7 3 2 1 Moving Clapper Stationary Yoke UV Trip Device Coil Extension Springs Trip D Shaft Lever Slotted Link Pole Shaft Lever Reset Lever Figure 5 8 Undervoltage...

Page 32: ...tain a dated permanent record of all inspections maintenance performed actions taken observations made and measurements taken Not only will this provide valuable historical information it can help to...

Page 33: ...e individual performing the work OVER TORQUING CAN CAUSE PERMANENT DAM AGE WHILE UNDER TORQUING WILL NOT PRO VIDE THE PROPER CLAMPING FORCE AND MAY EVENTUALLY WORK LOOSE Table 6 1 Torque Guidelines Bo...

Page 34: ...I B 3A74792H04 Page 28 Effective 7 97 Figure 6 1 Lubrication Points Apply one drop of light machine oil such as Mobil One at locations shown...

Page 35: ...with integrity check as If integrity check is not satisfactory described in Paragraph 6 4 replace pole unit assembly Primary Disconnects No burning or damage Visual Check Replace if burned damaged or...

Page 36: ...ical charge that may be retained To avoid any ambi guity in the ac high potential test due to leakage or dis placement capacitive current the test unit should have sufficient volt ampere capacity It i...

Page 37: ...tage is 60kV rms Conduct the test as follows Close the circuit breaker Connect the high potential lead of the test machine to one of the poles of the circuit breaker Connect the remaining poles and ci...

Page 38: ...ly and electrically Check the closing and opening times to verify that they are in accordance with the limits in Table 5 1 6 11 LUBRICATION All parts that require lubrication have been lubricated duri...

Page 39: ...ease 53701QB or equiv alent Rated Continuous Current amperes 600 1200 1600 2000 Resistance microohms 92 90 88 72 Table 6 3 Typical Resistance Measurements 6 12 TROUBLESHOOTING CHART Continued Next Pag...

Page 40: ...act open or burned or relay picks up Close Coil Open or burned Latch Check Switch Contact open bad switch or trip bar not reset Auxiliary Switch b contact open or burned Motor Cut off Contacts open or...

Page 41: ...aking poor or burned Trip Coil Burned or open Terminals and Connections Poor or burned or open Trip Mechanism Trip Clapper Jammed Trip Sound Trip Mechanism Trip Bar Trip Latch But No Trip Jammed Pole...

Page 42: ...ing information and shop order number b Describe the item give the style number and specify the quantity required c Specify the voltage for electrical components d Specify the method of shipping desir...

Page 43: ...3 12 380 32 2000A 31 5kA 3A74861H01 3 13 380 1500 600A 35kA 3A74865H01 3 14 380 1500 1200A 35kA 3A74866H01 3 15 380 1500 1600A 35kA 3A74867H01 3 16 380 1500 2000A 35kA 3A74868H01 3 Charging Motor 17...

Page 44: ...7H05 1 28 120VAC 8237A27H01 1 29 240VAC 8237A27H02 1 Shunt Trip Coils 30 24VDC 3759A76G14 1 31 48VDC 3759A76G11 1 32 125VDC 125VAC Cap Trip 3759A76G12 1 33 250VDC 240VAC Cap Trip 3759A76G13 1 Primary...

Page 45: ...off Switch 699B199G04 1 44 Latch Check Switch 699B147H04 1 45 Position Switch 699B147H01 1 46 Position Switch 3759A93H02 1 47 Auxiliary Switch 5697B20H01 1 48 Trip D Shaft 694C638G01 1 49 Trip Latch H...

Page 46: ...1 51 25kA 8796C85G02 1 52 31 5kA 8796C85G03 1 53 21 35kA 8796C85G04 1 54 Shock Absorber 5677B26H01 2 55 Front Panel w o ESCN 4D13655H02 1 56 Breaker Rail Wheel 5680B22G01 4 57 Shutter Drive Roller 568...

Page 47: ...rness 61 Repair Kit 8796C82G01 1 Complete Replacement 62 STD 8796C82G02 1 63 With 2 AUX SW 8798C82G03 1 Undervoltage Kit 64 48VDC 8794C81G01 1 65 125VDC 8794C81G02 1 66 250VDC 8794C81G03 1 67 120VAC 8...

Page 48: ...he contract between the purchaser and Cutler Hammer NO WARRANTIES EXPRESSED OR IMPLIED INCLUDING WARRANTIES OF FITNESS FOR A PAR TICULAR PURPOSE OR MERCHANTABILITY OR WARRANTIES ARISING FROM COURSE OF...

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