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GE PowerVac 5kV VL Instructions Manual
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GE PowerVac 5kV VL Instructions Manual

GE PowerVac 5kV VL Instructions Manual

For powervac vacuum circuit breakers type pv vl 4.16-250-0 with ml-19 mechanism
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g
DEH 40012
GE PowerVac
5kV VL
®
for PowerVac
Vacuum Circuit Breakers
®
Type PV VL 4.16-250-0
with ML-19 Mechanism
Instructions
1
Courtesy of NationalSwitchgear.com

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Summary of Contents for GE PowerVac 5kV VL

  • Page 1 DEH 40012 GE PowerVac 5kV VL ® for PowerVac Vacuum Circuit Breakers ® Type PV VL 4.16-250-0 with ML-19 Mechanism Instructions Courtesy of NationalSwitchgear.com...
  • Page 2 Features may be described herein that are not present in all hardware and software systems. GE Industrial Systems assumes no obligation of notice to holders of this document with respect to changes subsequently made.
  • Page 3 PowerVac 5kV Vertical Lift ® Table of Contents Chapter 1. Introduction Safety ........................6 Maintenance ......................6 Chapter 2. Description ........................7 Chapter 3. Receiving, Handling & Storage Receiving ........................ 8 Handling ........................8 Storage ........................8 Safety Precautions ....................8 Unpacking the Breaker ....................
  • Page 4 PowerVac 5kV Vertical Lift ® Table of Contents Chapter 9. Electrical Checks Electrical Operation ....................28 High Potential Test ....................28 Primary Circuit ....................... 28 Secondary Circuit ....................28 Primary Circuit Resistance..................28 Vacuum Integrity Test .................... 28 Insulation Tests ..................... 29 Chapter 10.
  • Page 5 PowerVac 5kV Vertical Lift ® Table of Contents List of Figures V iew of the 5kV ‘VL’ Breaker with Front Cover ................7 Hooking lifting eyes ........................... 8 Manual Trip & Close .......................... 9 Positive Interlock ..........................9 Rating Interference Bolt ........................10 Positive Interlock system ........................
  • Page 6 GE neither con- power handling equipment, must be thoroughly dones nor assumes any responsibility for prac-...
  • Page 7 The application of electrical apparatus and power systems. The a breaker must be such that its voltage, current PowerVac 5kV VL Type PV-VL1 circuit breaker and interrupting ratings are never exceeded. with ML-19 mechanism is available in continu-...
  • Page 8 TION AND BOTH THE CLOSING AND OPENING mediately with the transportation company, and SPRINGS ARE EITHER DISCHARGED OR the nearest GE Sales Office should be notified. GAGGED AND ALL ELECTRICAL POWER IS RE- MOVED. CAUTION: THE BREAKER HAS BEEN The precautions are required to prevent acci- SHIPPED IN THE CLOSED POSITION.
  • Page 9 “OPEN” and problem with another interface or adjustment. “DISCHGD”. Although GE has made every effort to assure All mechanical and electrical checks listed in interchangability and satisfactory interface with Chapter 4 should be completed before putting existing equipment.
  • Page 10 PowerVac 5kV Vertical Lift ® Chapter 3. Receiving, Handling & Storage Interference Bolts This interlock permits only a breaker with a matching continuous current rating to be in- serted into a metal-clad compartment of identi- cal rating. The rating interference bolt has been assembled to match the current rating of the compartment.
  • Page 11 PowerVac 5kV Vertical Lift ® Chapter 4. Installation 4-1 Breaker Preparation the positive interlock roller and lever are forced forward by the postitive interlock cam on the Prior to interfacing the breaker into the right side of the switchgear cell. The interlock switchgear cell, rub a small amount of roller and lever are held in this forward position 0282A2048P009 red grease, provided with the...
  • Page 12 PowerVac 5kV Vertical Lift ® Chapter 4. Installation (-0, + 1/16”) Figure 6. Positive Interlock system 4-4 Check for Proper Interlock 3. Lower the elevating mechanism lifting and Trip-free Functions Before brackets until the lifting brackets are in the fully lowered position. The breaker should Energizing the Breaker then enter the housing freely.
  • Page 13 PowerVac 5kV Vertical Lift ® Chapter 4. Installation WARNING: AGAIN, BEFORE PROCEEDING CAUTION: THE MOTOR RAISE/LOWER SE- WITH THIS CHECK, IT IS NECESSARY THAT LECTOR SWITCH MUST NOT BE USED TO THE PRIMARY CIRCUITS BE DE-ENERGIZED. ENERGIZE OR INTERRUPT MOTOR CIRCUIT AT ANY TIME.
  • Page 14 Contact the local GE Sales Office for factory assistance. Figure 8. Primary Contact Insertion Courtesy of NationalSwitchgear.com...
  • Page 15 PowerVac 5kV Vertical Lift ® Chapter 4. Installation 3000A Contact Final Wipe area should Position be a minimum of 60% contact width 3/4” to 7/8” 1/2” to 5/8” 1200A & 2000A Contact Wipe Electrical should be a line Wipe 1/16” to 1/8” wide.
  • Page 16 A major goal in the design of switchgear has always been the interchangeability of breakers. GE Switchgear has been very successful in achieving that goal for many years. Analysis of instruction book adjustments, shop tolerances, and service advice letters issued in recent years,...
  • Page 17 PowerVac 5kV Vertical Lift ® Chapter 4. Installation 4-9 Secondary Coupler 4-10 Position Switch (TOC) On the top left front of the breaker, there is a The position switch is an optional device plastic block which holds the male secondary mounted in the rear left side of the switchgear coupler pins.
  • Page 18 PowerVac 5kV Vertical Lift ® Chapter 5. Operation 5-1 Description The energy then stored in the wipe and open- The PowerVac 5kV VL vacuum circuit breaker ® uses a sealed vacuum power interrupter to es- ing springs will open the contacts during an tablish and interrupt a primary circuit.
  • Page 19 PowerVac 5kV Vertical Lift ® Chapter 5. Operation 5-2 Close Spring Charging A manual charging system is provided to manu- ally charge the breaker, or while under mainte- Figure 13 shows a left side view of the closing nance so that the mechanism can be slow spring.
  • Page 20 PowerVac 5kV Vertical Lift ® Chapter 5. Operation Spring charging is accomplished electrically by The closing coil cannot be electrically energized a rotating eccentric on the output shaft of a unless the closing spring is completely charged. gear motor (Figure 15, Item 6) which in turn This action is prevented by the 52/CHG switch drives pivoted charging arms (Figure 15, Item in the closing circuit.
  • Page 21 PowerVac 5kV Vertical Lift ® Chapter 5. Operation The rotation of the primary cross shaft rotates 5-5 Opening Operation two outer phase bell cranks which compress By either energizing the trip solenoid (Figure 13 the outer opening springs (Figure 17, Item 1). Item 3) or depressing the manual trip button The primary cross shaft also rotates two sets of (Figure 1, Item 7), the trip latch (Figure 16, Item...
  • Page 22 PowerVac 5kV Vertical Lift ® Chapter 6. Control Circuit 6-1 Controls The close coil circuit is established through two A Standard internal wire harness for a PowerVac ® normally closed 52Y relay contacts, and the Latch VL circuit breaker ML-19 mechanism is shown Checking Switch (LCS).
  • Page 23 The wiring on your breakers may be different. ing in Figure 20. Consult your nameplate for the correct drawing number and call your local GE office when ad- ditional copies of this drawing are required. Figure 20. Typical breaker wiring diagram (Replacement for breakers with MS mechanisms) Courtesy of NationalSwitchgear.com...
  • Page 24 PowerVac 5kV Vertical Lift ® Chapter 6. Control Circuit Figure 21. Typical breaker wiring diagram (Replacement for breakers with ML mechanisms) Courtesy of NationalSwitchgear.com...
  • Page 25 PowerVac 5kV Vertical Lift ® Chapter 7. Mechanical Checking and Slow Closing 7-4 Slow Closing 7-1 Visual Inspection To manually slow close the breaker contacts, Visually inspect the circuit breaker for any signs remove the top plate of mechanism. Install the of damage or loose hardware.
  • Page 26 PowerVac 5kV Vertical Lift ® Chapter 8. Dimensional Checks 8-1 Primary Contact Erosion Each interrupter has been premeaseured at the factory for the primary contact gap and this mea- The vacuum interrupter is a sealed unit and the surement has been recorded on the ceramic contacts are not visible.
  • Page 27 PowerVac 5kV Vertical Lift ® Chapter 8. Dimensional Checks With the breaker closed and charged and the closing spring gagged for safety (Chapter 7-3), verify that each phase has suf- ficient spring wipe. If more then two red lines are showing the breaker wipe is sufficient.
  • Page 28 PowerVac 5kV Vertical Lift ® Chapter 9. Electrical Checks 9-1 Electrical Operation If the test should experience a failure, STOP, Electrical checking consists of electrical breaker operation primary and seconary wiring high-po- turn off the test set and discharge the breaker circuit.
  • Page 29 Model 880PL be reviewed and the pole piece cleaned. 9-5 Insulation Tests GE failure rate for vacuum bottles is 0.0007 per field unit. The primary circuit insulation on the breaker may be checked phase to phase and phase to ground 1.
  • Page 30 Some users may require additional assistance Both long and short term maintenance of all elec- from GE in the planning and performance of trical equipment is essential for reliability and maintenance. The local GE office can be con- safety.
  • Page 31 Any major observed problems should be docu- mented. Forward the completed user report The erosion rate of the primary contacts in the forms to GE Resolution at West Burlington, vacuum interrupters is very low for no-load and Iowa. normal load switching operations. However,...
  • Page 32 Optional travel transducer and linkage system can be obtained 2. Clean and coat lightly with 0282A2048P009 by contacting your local GE Sales Office by or- grease the pins of the secondary coupler. dering part number 0144D1238G001. The travel transducer apparatus can typically be installed as shown in Figure 28.
  • Page 33 PowerVac 5kV Vertical Lift ® Chapter 10. Maintenance The opening speed is modified by moving the speed adjusting nuts on the opening spring as- semblies. A change in the opening speed af- fects the closing speed Reference Figure 27. The operating speeds for 5 cycle breakers with the MOC are as follows: Operation Feet Per Second...
  • Page 34 PowerVac 5kV Vertical Lift ® Chapter 10. Maintenance Figure 28. Travel Transducer Installation (Part # 0144D1238G001) 1. Clamp 3. Transducer 2. Connecting Link 4. Mounting Bracker Courtesy of NationalSwitchgear.com...
  • Page 35 PowerVac 5kV Vertical Lift ® Chapter 11. Mechanical Adjustments 11-1 General The ML-19 VL Mechanism has been designed Improved accuracy of wipe measurement may for extended intervals between maintenance. In be obtained by using a feeler gauge between the top of the wipe spring (5/8) nut and bottom most cases only the wipe and gap adjustments will require re-setting throughout the life of the of the spring block.
  • Page 36 PowerVac 5kV Vertical Lift ® Chapter 11. Mechanical Adjustments 11-3 Contact Gap Adjustment The gap adjustment refers to the separation, or gap, between the primary contacts within the vacuum interrupter. Before attempting to mea- sure or set the gap adjustment, verify that the wipe settings are within acceptable limits.
  • Page 37 PowerVac 5kV Vertical Lift ® Chapter 11. Mechanical Adjustments 11-4 Trip Coil Plunger Gap To adjust the trip coil plunger gap (Figure 32), lift locktab (item 6) away from adjusting nut (item 5). Turn adjusting nut until actuator arm makes contact with trip lever (item 8) while maintaining dimension T.
  • Page 38 PowerVac 5kV Vertical Lift ® Chapter 11. Mechanical Adjustments 11-5 Close Coil Plunger Adjustment To adjust the close coil plunger gap (Figure 36) The closing system is shown in Figure 35. With the closing spring discharged, operate the plunger to make certain that the plunger moves freely over its full stroke in the coil.
  • Page 39 PowerVac 5kV Vertical Lift ® Chapter 11. Mechanical Adjustments 11-6 Control Switch Adjustment The breaker is to be in the open position with the opening and closing springs discharged. Thisresults in the control switch plungers be- ing in the depressed position. Four sets of switches are to be checked.
  • Page 40 GE Switchgear has been very successful in ers. At a minimum, the criticality requires ad- achieving that goal for many years. Analysis of justment verification when swapping breakers.
  • Page 41 PowerVac 5kV Vertical Lift ® Chapter 11. Mechanical Adjustments Adjustment of Plunger Interlock - Breaker raised to connect position. Gap adjustment as a function of breaker plunger travel to assure proper switch operation. Plunger Interlock Gap between top of plunger interlock and Resulting travel of the aux.
  • Page 42 PowerVac 5kV Vertical Lift ® Chapter 11. Mechanical Adjustments Breaker Open - Spring Discharged Breaker Closed - Spring DisCharged Figure 41. Toggle Linkage Positions Figure 42. Toggle Linkage Positions (View from Right Side) Breaker Open - Spring Charged Breaker Closed - Spring Charged Figure 41A.
  • Page 43 PowerVac 5kV Vertical Lift ® Chapter 11. Mechanical Adjustments TABLE #1 MEASUREMENTS CLOSING OPENING ITEM BREAKER SPRING SPRING MEASUREMENT Contact Open Charged Discharged Measure the stem or between Wipe Closed Charged Charged spring block and nut Contact Open Charged Discharged Measure the travel of the Closed Charged...
  • Page 44 PowerVac 5kV Vertical Lift ® Chapter 12. Repair and Replacement 12-1 General 1. To remove the ML-19 element from the main truck or frame. The following information covers in detail the proper method of removing various parts of the a. Remove rear cover; disconnect surge breaker in order to make any necessary repairs.
  • Page 45 1/16 inch gap be- tween the ears. Retaining rings can be obtained d. Tighten lock nut to 40-50 foot pounds from your local GE Sales office by ordering part and the coupling clamp cap screws to number 0282A2015G001.
  • Page 46 PowerVac 5kV Vertical Lift ® Chapter 12. Repair and Replacement 7. Remove the four bolts (item 6) securing the 12.The set screw in the collar (Figure 44, item trip coil brackets to the mechanism side 3) should then be tightened to the plunger plate.
  • Page 47 PowerVac 5kV Vertical Lift ® Chapter 12. Repair and Replacement 12-7 Closing Coil Replacement 12-8 Auxiliary Switch Replacement Reference Figure 35 and 36. Disconnect the clos- ing latch actuator tension spring (item 2). Re- With the breaker open and the closing spring move the “X”...
  • Page 48 PowerVac 5kV Vertical Lift ® Chapter 12. Repair and Replacement 1 Close Spring Close Latch Check Switch 2 Cam Shaft Close Latch 3 Manual Charge and One-way Clutch Close Cam 4 Buffer / Overtravel Stop Prop 5 Ratchet Wheel Main Shaft 6 Driving Pawl Auxilary Switch 13 Pivot Bolt...
  • Page 49 PowerVac 5kV Vertical Lift ® Chapter 12. Repair and Replacement 12-9 Motor Replacement 12-10 “Y” Relay Replacement With the breaker open and the closing spring Before removing the “Y” relay, make sure all discharged, disconnect motor leads. Remove leads are marked with terminal locations (fig- three (3) 3/8-16 hex capscrews securing the ure 41).
  • Page 50 PowerVac 5kV Vertical Lift ® Chapter 12. Repair and Replacement switch Figure 48. Motor Cutoff Switch Counter Manual Charge Mechanism Gag Tool Closing Spring Figure 49. Closing Spring Gag Courtesy of NationalSwitchgear.com...
  • Page 51 Renewal parts which are GE furnished may not 3. Standard hardware, such as screws, bolts, be identical to the original parts, but they will nuts, washers, etc. are not listed in this be interchangeable.
  • Page 52 ® Renewal Parts Location of nameplates in Type AM Magne-blast Vertical Lift Lineup Shown below is a typical switchgear lineup..Type VBI 4.16 - 250 g GE PowerVac Breaker Ser. No. 0357A4157-001-03 Rated Max Impulse Voltage Rated Amp. 1200 HZ 60...
  • Page 53 ® PowerVac 5kV Vertical Lift Chapter 14. Stationary Cubicle Subassembly 14-1 Introduction 5. Breaker Testing Provisions Optional provisions for testing the breaker unit The breaker cubicle sub-assembly is normally after removing it from the cubicle can be fur- the existing Magne-blast stationary housing for nished.
  • Page 54 PowerVac 5kV Vertical Lift ® Chapter 14. Stationary Cubicle Subassembly If it is necessary to align the doors of the breaker WARNING: DO NOT INSTALL OR REMOVE compartment, the following procedure should THE BREAKER OR MAKE ADJUSTMENTS be followed. UNLESS THE BREAKER IS OPEN. 1.
  • Page 55 CAUTION: DO NOT MAKE THESE ADJUST- To raise or lower the breaker, the clutch must be held in the engaged position, MENTS. CONTACT YOUR LOCAL GE REPRE- otherwise a spring will return it to its SENTATIVE FOR ADDITIONAL INFORMATION. disengaged position and open the elec- 5.
  • Page 56 PowerVac 5kV Vertical Lift ® Chapter 14. Stationary Cubicle Subassembly WARNING: IF THE BREAKER IS IN THE CLOSED POSITION WHILE ATTEMPTING TO LOWER THE BREAKER, ENGAGING THE CLUTCH HANDLE WILL CAUSE THE BREAKER TO OPEN AND THE CLOSING REMOVABLE ELEVATING SPRING TO DISCHARGE.
  • Page 57 PowerVac 5kV Vertical Lift ® Chapter 14. Stationary Cubicle Subassembly Table 4. Elevating Motor Troubleshooting CORRECTIONS IF ELEVATING MOTOR DOES NOT OPERATE: Check Power Supply Check fuses UL Check and adjust mechanical clutch linkage to clutch switch LC Check LC for proper performance Check motor switch Check motor Adjust upper LE and lower LF limit switches for proper breaker position...
  • Page 58 The breaker cessive adjustment. Consult GE nearest sales testing device, which may be furnished as an office. option, provides a convenient means for main- 7.
  • Page 59 PowerVac 5kV Vertical Lift ® Chapter 14. Stationary Cubicle Subassembly Figure 53. Positive interlock M-26 units Courtesy of NationalSwitchgear.com...
  • Page 60 PowerVac 5kV Vertical Lift ® Chapter 14. Stationary Cubicle Subassembly Care should be exercised in the maintenance Hi-potential tests are not required, but if it and checking procedures that accidental trip- seems advisable, based on the insulation ping or operation of the protective devices is resistance tests or after repairs, the test not initiated.
  • Page 61 #xxxxxxxxxxxx, which can be furnished as an the dimensions given in Figure 2A. option, with the new vacuum breaker. This by- pass kit can be installed on existing GE M26 a. The 10-7/8” (-0” +1/16”) dimension magne-blast breaker cubicles that have a lower from the breaker to the front edge of the interlock roller “Vee”...
  • Page 62 PowerVac 5kV Vertical Lift ® Appendix A B. CHECKING FOR PROPER INTERLOCK AND TRIP-FREE FUNCTIONS BEFORE LOWERING THE BREAKER FROM THE ELEVATED POSITION. d. Using the manual charging, charge the closing springs in the breaker until the 1. STANDARD OPERATION: When the breaker semaphore shows charged.
  • Page 63 PowerVac 5kV Vertical Lift ® Appendix A Appendix 1A. Positive Interlock system Courtesy of NationalSwitchgear.com...
  • Page 64 PowerVac 5kV Vertical Lift ® Appendix A Positive Interlock Cam Plate (REF.) 2) Drill .218 Dia. in 11/16 Interlock Plate and (REF.) install H.H. thread cutting screw (McMaster Cat. #90088A539). 1/4 F.W., 1/4 L.W. New Switch Operator Bracket (shown blocking lower notch) (2) Replace with Plate Interlock...
  • Page 65 PowerVac 5kV Vertical Lift ® Appendix A 1/8 (REF.) 3 5/8 1 9/16 2 1/4 11/16 2 5/8 Appendix Figure 3A. Motor Operation Switch Actuator Courtesy of NationalSwitchgear.com...
  • Page 66 USER REPORT NO. FAILURE REPORTING FORM Check all appropriate blocks and provide information indicated. For major trouble provide additional information requested on back of page supplemented with additional pages if necessary. User Ident EQUIPMENT: Station__________________________ of Recloser ______________ Equipment Nameplate Mfgr._______________________________Type_______________ Serial #________________ Information...
  • Page 67 ADDITIONAL INFORMATION REQUIRED FOR ANALYSIS OF MAJOR OR SYSTEM RELATED FAILURE (USE ADDITIONAL PAGES AS NECESSARY ) ( 1 ) Single line station diagram showing involved reclosers ( 2 ) Operation and timing sequence (including all alarms) of this and related reclosers f rom last time that conditions were definitely normal ( 3 ) Line conditions before, during, and after failure...
  • Page 68 Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser’s purposes, the matter should be referr ed to the General Electric Company. GE Industrial Systems ________________________________________ General Electric Company 510 East Agency Road...