Eaton 50 VCP-WL Instructions For Installation, Operation And Maintenance Download

Page: 39 / 46

IB131021EN

Page

xxxiii

Effective Mar 2018

material presented in this instruction manual and other
related manuals.

6-2.2

GENERAL TORQUE GUIDELINES

Bolts  and  screws  must  be  properly  torqued.  This  is
especially  true  if  part  and/or  accessories  are  added  or
replaced.  Table

6.1

provides guidelines on torque levels.

The table is intended as a general guideline and should be
applied in conjunction with the experience and good
judgment of the individual performing the work.

Table 6.1 Torque Guidelines

Bolt Size

Torque (LB-IN)

8 - 32

10 - 32

1/4 - 20

5/16 - 18

144 (12 lb-ft)

3/8 - 16

300 (25 lb-ft)

1/2 - 13

540 (45 lb-ft)

CAUTION

OVER TORQUING CAN CAUSE PERMANENT DAMAGE
WHILE UNDER TORQUING WILL NOT PROVIDE THE
PROPER CLAMPING FORCE AND MAY EVENTUALLY
WORK LOOSE.

6-3

INSPECTION AND MAINTENANCE PROCEDURES

No./Section

Inspection Item

Criteria

Inspection Method

Corrective Action

1.Insulation
Insulation
Integrity

Drive Insulator, Barriers,
And Stand-off Insulators

Main Circuit to Ground

Between Main Circuit
Terminals

Control Circuit to Ground

No dirt and no cracking

Withstand

Visual Check

Hipot Tester

Clean with lint-free cloth or replace
cracked piece

Clean and retest or replace

Summary of Contents for 50 VCP-WL

Page 1: ...Effective Mar 2018 Instructions for Installation Operation and Maintenance of Type VCP WL Vacuum Circuit Breakers IB131021EN ...

Page 2: ...THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 3: ...Effective Mar 2018 IB131021EN ...

Page 4: ...EQUIPMENT TO FAIL RESULTING IN DEATH BODILY INJURY AND PROPERTY DAMAGE ALL SAFETY CODES SAFETY STANDARDS AND OR REGULATIONS AS THEY MAY BE APPLIED TO THIS TYPE OF EQUIPMENT MUST BE STRICTLY ADHERED TO THESE CIRCUIT BREAKER ELEMENTS ARE DESIGNED TO BE INSTALLED PURSUANT TO THE AMERICAN NATIONAL STANDARDS INSTITUTE ANSI SERIOUS INJURY INCLUDING DEATH CAN RESULT FROM FAILURE TO FOLLOW THE PROCEDURES ...

Page 5: ... CIRCUIT BREAKER STRUCTURE INTERFACING 21 SECTION 5 DESCRIPTION ANDOPERATION 23 5 1 INTRODUCTION 23 5 2 INTERRUPTER ASSEMBLY 23 5 3 ELECTROMAGNETIC MECHANISM 26 5 4 CONTROL SCHEMES 29 5 5 INTERLOCKS AND INTERFACING 29 5 6 LEVERING MECHANISM 29 5 7 OPERATIONS COUNTER 30 5 8 GROUND CONTACT 30 5 9 MOC AND TOC SWITCH OPERATIONS 30 SECTION 6 INSPECTION MAINTENANCEAND TROUBLESHOOTING 31 6 1 INTRODUCTION...

Page 6: ...BREAKER FRONT COVER ARRANGEMENT 13 FIGURE 4 1A INSERTION OF THE DRAWOUT EXTENSION RAILS 15 FIGURE 4 1B LIFTING AND SETTING THE BREAKER IN THE HOUSING 15 FIGURE 4 1C BPI PAN ASSEMBLY 17 FIGURE 4 2 ENGAGING EXTENSION RAILS IN A LOWER CIRCUIT BREAKER COMPARTMENT 19 FIGURE 4 3 TYPICAL VCP WL CIRCUIT BREAKER BOTTOM VIEW 20 FIGURE 4 4 ENGAGING LEVERING IN CRANK 21 FIGURE 5 1 VCP WL POLE UNIT AND VACUUM ...

Page 7: ...g power facilities or claims against the purchaser or user by its customers resulting from the use of the information and descriptions contained herein 1 1 2 SAFETY PRECAUTIONS All safety codes safety standards and or regulations must be strictly observed in the installation operation and maintenance of this device WARNING THE WARNINGS AND CAUTIONS INCLUDED AS PART OF THE PROCEDURAL STEPS IN THIS ...

Page 8: ...S AND OR MINIMOD IS CONTINGENT UPON PROPER APPLICATION CORRECT INSTALLATION AND ADEQUATE MAINTENANCE THIS INSTRUCTION BOOK MUST BE CAREFULLY READ AND FOLLOWED IN ORDER TO OBTAIN OPTIMUM PERFORMANCE FOR LONG USEFUL LIFE OF THE MINIMOD EQUIPMENT TO FAIL RESULTING IN DEATH BODILY INJURY AND PROPERTY DAMAGE ALL SAFETY CODES SAFETY STANDARDS AND OR REGULATIONS AS THEY MAY BE APPLIED TO THIS TYPE OF EQU...

Page 9: ...ipping Delay Y Current Values Withstand Test Voltage Continuous Current at 60 Hz Short Circuit Current at Rated Max kV I Closing and Latching Capability 2 7 K Times Rated Short Circuit Current Closing and Latching Capability Momentary 1 6 K Times Rated Short Circuit Current Power Frequency 1 Min Impulse kV kV rms Amperes kA rms Cycles Seconds kA Peak kA rms 150 VCP WL 15 36 95 1200 25 3 or 5 2 65 ...

Page 10: ...Page iv IB131021EN Effective Mar 2018 OUTLINES AND DIMENSIONS 1 4 Figure 1 1 Type VCP WL Circuit Breaker Outlines and Dimensions Front View ...

Page 11: ...fective Mar 2018 Side View SECTION 2 SAFE PRACTICES 2 1 RECOMMENDATIONS Type VCP WL Vacuum Circuit Breaker Elements are equipped with high speed high energy operating mechanisms and are designed with several built in inter ...

Page 12: ... on the extension rails while performing such activities as charging closing and tripping Carelessness could cause the circuit breaker to fall from the rails resulting in personal injury to those in the area Do not work on a closed breaker or a breaker with capacitor bank charged The capacitor bank should be discharged and the main contacts open before working on the breaker The capacitor bank wil...

Page 13: ... yoke in conjunction with an overhead lifter or portable floor lifter can be used to move a breaker element When a breaker element is to be lifted position the lifting yoke over the breaker element and insert the lifter tabs into the breaker element side openings with the lifting hole toward the interrupters Once the lifting yoke is securely seated in the holes the breaker element can be carefully...

Page 14: ...ing Transport Dolly Used to insert or withdraw breaker from lower compartment without portable lifter or move breaker from one location to another Style 6510C71G11 for VCP WL Electrical Levering In Device Used to electrically move breaker between TEST and CONNECTED positions Style 1A30257G01 Test Jumper Used to operate breaker electrically while breaker is on extension rails or transport dolly Sty...

Page 15: ...Figure 3 1 Typical VCP WL Tools and Accessories Note Products shown for representation only New products may include design improvements and alternate nameplate configurations ...

Page 16: ...uit Breaker Newer model Breakers may not have the escutcheon as shown 1 Front Panel 5 Mechanism Enclosure 2 Levering Latch 6 Lifting Yoke Opening 3 Wheel 7 Primary Disconnect 4 Ground Contact Figure 3 3 Typical VCP WL Vacuum Circuit Breaker Element with Front Cover Removed 1 2 3 5 6 7 4 ...

Page 17: ...IB131021EN Page xi Effective Mar 2018 1 Electro Magnetic Actuator 5 Closing Coil Capacitor Bank 2 Auxiliary Switch 6 Optional Under Voltage Relay 3 Power Supplies 4 Controller 1 2 4 3 5 6 ...

Page 18: ...Page xii IB131021EN Effective Mar 2018 Figure 3 4 VCP WL Mechanism Details 1 Yoke 2 Output Plates 3 Cam Blocks 4 Cross Members 1 2 3 4 ...

Page 19: ...Mar 2018 Figure 3 5 Typical Rear View VCP WL Vacuum Circuit Breaker Element Vacuum Interrupter 1 Drive Rod Housing 2 Drive Rod Assembly 3 Bell Cranks 4 Figure 3 6 Typical VCP WL Vacuum Circuit Breaker Front Cover Arrangement 1 2 3 4 ...

Page 20: ...iv IB131021EN Effective Mar 2018 Nameplate 5 Breaker Charged Discharged Indicator 1 Operation Counter 6 Manual Close Button 2 Open Closed Indicator 7 Manual Open Button 3 Emergency Open Handle 4 1 2 3 4 5 6 7 ...

Page 21: ...exceed the values specified Record the values obtained for future reference 4 5 NAMEPLATE Compare the circuit breaker nameplate information with switchgear drawings for compatibility 4 6 ELECTRICAL OPERATION AND MECHANICAL OPEN CHECK After having completed all previous checks and tests the circuit breaker is ready to be operated electrically It is preferred that this check be made with the circuit...

Page 22: ...ker compartment see Figure 4 1A and Figure 4 1B Figure 4 1A Insertion of the Drawout Extension Rails F i g u r e 4 1 B Lifting and Setting the Breaker in the Housing Checking pan operation A T o o p e r a te t h e b r e a k e r a t t h is t i m e t e st position mode it is necessary to connect the secondary harness with the breaker Manual secondary For a manually engaged secondary harness Pull the...

Page 23: ...VER THE CIRCUIT BREAKER FROM TEST OR CONNECTED POSITIONS CORRECT OPERATION OF SOME OF THE INTERLOCKS IS DEPENDENT ON USE OF THE PROVIDED LEVERING CRANK PERSONAL INJURY OR EQUIPMENT DAMAGE COULD RESULT FROM THE USE A TOOL OTHER THAN THE PROPER LEVERING IN CRANK NOTICE The circuit breaker and integral levering mechanism includes all necessary interlocks that when inter faced with a compatible struct...

Page 24: ...1 CODE PLATES 2 LEVERING SYSTEM 12 PROVISION FOR PADLOCKING 3 AUTOMATIC SECONDARY 13 METAL FRAMEWORK 4 RACKING SCREW 14 BREAKER RAIL 5 MOVING BLOCK 15 MR2 INTEGRAL RACKING PROVISIONS 6 SLIDER 7 BREAKER POSITION INDICATION 8 SLIDER INTERLOCKS 9 MOC SWITCH 10 TOC SWITCH ...

Page 25: ...iewing position when the breaker is fully connected BPI breaker position indication Label Represents positive indication of breaker location at any position through use of a colored label mounted on the top flange of the right hand rail assembly Green indicates the Disconnect position yellow indicates the Test position and red indicates the Connect position Upon arriving at any of the three discre...

Page 26: ...n and engage the secondary contacts following the procedure described in paragraph 4 8 1 As soon as the cap bank is charged the condition will be indicated by a Breaker Charged Discharged Indicator on the front of the circuit breaker Figure 3 5 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 time...

Page 27: ...gure 4 3 Typical VCP WL Circuit Breaker Bottom View Ground Contact 5 Trip Floor Tripper 1 Secondary Disconnect 6 Code Plates 2 Close Floor Tripper 7 MOC Operator 3 Extension Rail Interlock 4 1 2 3 5 7 6 4 ...

Page 28: ...ferences The following interlocks are provided to ensure safe and proper operation Code Plates Code plates are provided to prevent the insertion of a circuit breaker into a structure of a higher power rating Compatible plates on the circuit breaker and in the compartment form this interlock NOTICE Code plates do not block out control voltage or scheme incompatibility Maintenance Interlock This int...

Page 29: ...ters will automatically begin to open uncovering fixed primary contacts TOC switches will also operate once the CONNECTED position is reached if TOC switches are provided in the structure Remove the levering in crank at this point Close the circuit breaker Any provided MOC switches will operate and the motor closing springs will charge if control power is available Attempt to lift the circuit brea...

Page 30: ...nce The flexible shunt is a non sliding current transfer system between the movable stem and the bottom conductor which eliminates the need for maintenance Figure 5 1 Multiple finger floating type primary disconnecting contacts at the ends of the top and bottom conductors provide a means for interfacing with the primary conductors mounted in the switchgear Figure 3 4 Insulated operating drive rods...

Page 31: ...echecked during standard inspection and maintenance intervals as discussed in Section 6 of this document to ensure it is within the specified limits on each phase The contact wipe can be increased if it has been reduced by contact erosion To increase contact wipe on a pole unit drive rod assembly follow these steps Measure distance between the Drive Rod End and 1 the Drive Rod Housing in the open ...

Page 32: ...ragraph 6 5 for information on Contact Erosion F i g u r e 5 3 M e a s u r ement of Contact Stroke Figure 5 4 Loosening the Drive Rod Housing Jam Nut Figure 5 5 Measurement of Contact Open Gap 5 3 ELECTROMAGNETIC MECHANISM WARNING KEEP HANDS AND FINGERS AWAY FROM THE CIRCUIT BREAKER S INTERNAL PARTS WHILE THE CIRCUIT BREAKER CONTACTS ARE CLOSED OR THE CAPACITORS ARE CHARGED THE CIRCUIT BREAKER CON...

Page 33: ...pacitors which store energy to open and close the circuit breaker The controller has an internal capacitor which stores energy for a tripping operation The controller charges an external capacitor bank which stores energy for a closing operation The external closing capacitor bank is comprised of four 39 000uF capacitors which are charged to 95VDC When the circuit breaker is powered on the closing...

Page 34: ...from initiation of close signal to contact make 65 milliseconds MAX Opening Time from initiation of trip signal to contact break 3 cycle 20 40 milliseconds 5 cycle 20 70 milliseconds Re closing Time from initiation of trip signal to contact make 300 milliseconds MAX SECONDARY DISCONNECTS 5 4 2 The circuit breaker control wiring is arranged to connect a standard 25 point male plug with a correspond...

Page 35: ...IB131021EN Page xxix Effective Mar 2018 5 4 CONTROL SCHEMES The basic control scheme for the VCP WL circuit breaker is shown in Figure 5 5 below ...

Page 36: ...of a circuit breaker from its compartment refer to paragraph 4 8 1 in this manual The levering device consists of a drive screw a drive nut two side rails and a sliding cage In the TEST position the nut is all the way to the front As the circuit breaker is pushed in the levering latch snaps on the nut Turning the crank clockwise while pushing forward advances the circuit breaker toward the CONNECT...

Page 37: ... into the TEST position It remains engaged in all other circuit breaker positions within the cell Figures 4 2 and 4 4 5 9 MOC AND TOC SWITCH OPERATIONS The MOC mechanism operated control switch operator is coupled to the pole shaft Figure 4 4 In the TEST and CONNECTED positions of the circuit breaker the operator aligns directly above the MOC switch bell crank levers in the compartment As the circ...

Page 38: ...acteristics if there are any customer uncertainties in the records of the magnitude duration or other fault details increased inspection frequency should be considered Follow the steps presented in Paragraph 6 3 entitled 4 Inspection and Maintenance Procedures for scheduled programs Create and maintain a dated permanent record of all 5 inspections maintenance performed actions taken observations m...

Page 39: ... 1 4 20 72 5 16 18 144 12 lb ft 3 8 16 300 25 lb ft 1 2 13 540 45 lb ft CAUTION OVER TORQUING CAN CAUSE PERMANENT DAMAGE WHILE UNDER TORQUING WILL NOT PROVIDE THE PROPER CLAMPING FORCE AND MAY EVENTUALLY WORK LOOSE 6 3 INSPECTION AND MAINTENANCE PROCEDURES No Section Inspection Item Criteria Inspection Method Corrective Action 1 Insulation Insulation Integrity Drive Insulator Barriers And Stand of...

Page 40: ...ormation or Excessive Wear Manual Operation No loose or missing Parts No dust or foreign matter Smooth operation and no excessive wear No excessive deformation or wear Smooth operation Visual and by feel Visual Check Sight feel and per maintenance schedule Visual and operational Manual tripping Refer to Table 6 1 and tighten or reinstate if necessary with appropriate tools Clean as necessary Refer...

Page 41: ... have sufficient volt ampere capacity It is recommended that the equipment be capable of delivering 25 milliamperes for one minute ONLY AC HIGH POTENTIAL TESTS ARE RECOMMENDED WE DO NOT RECOMMEND DC POWER FREQUENCY WITHSTAND VOLTAGE TEST Table 6 2 Insulation Vacuum Integrity Test Voltage Breaker Rated Maximum Voltage Vacuum Interrupter Integrity Test Voltage AC 60Hz dc Up to and including 5 kV 15 ...

Page 42: ...l lead of the test machine to one of the poles of the breaker Connect the remaining poles and breaker frame to ground Start the machine with output potential at zero and increase to the test voltage Maintain the test voltage for one minute Repeat for the remaining poles Successful withstand indicates satisfactory insulation strength of the primary circuit If a DC high potential machine is used mak...

Page 43: ...HE EQUIPMENT WHILE IT IS ENERGIZED NEVER PUT YOUR HANDS NEAR THE MECHANISM WHEN THE CIRCUIT BREAKER IS IN THE CHARGED OR CLOSED POSITION DEATH OR SEVERE PERSONAL INJURY CAN RESULT FROM CONTACT WITH ENERGIZED EQUIPMENT ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT BEFORE PROCEEDING WITH THE TASK AND ALWAYS FOLLOW GENERALLY ACCEPTED SAFETY PROCEDURES Safety Precautions Read and understand these instructi...

Page 44: ...switch wiring problem Inspect for loose wires at red Push to Open push button Controller wiring problem Inspect for loose wires into terminals controller Circuit breaker makes no attempt to open with either local manual or remote controls Wiring problem from auxiliary switch to controller Controller thinks breaker is already open LED on Controller labeled circuit breaker ON should be on Inspect fo...

Page 45: ...EATON Service Center Circuit breaker interlock is preventing close Ensure circuit breaker is fully racked in or out of enclosure Verify that the emergency open handle rod assembly is changing state of normally open switch located behind it in mechanism assembly Check all interlock switches for obstructions Circuit breaker fails to charge closing capacitor bank Wiring problem from Power Supplies Co...

Page 46: ...rded destroyed in a similar manner as the switchgear that it is contained within The breaker raw materials in general are made from Copper Steel Aluminum and plastic 6 13 FAILURE REPORTING It is important to learn the field failures To aid in this process it is recommended that IEEE Std C37 10 section A 1 and the reporting form IEEE Std 1325 be considered for reporting the breaker failure event to...

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