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Recommended Renewal Parts and Replacement Procedures

PowlVac

STD Vacuum Circuit Breaker

IB-60201

1) Vacuum Interrupter Assembly

CAUTION

The vacuum interrupter should only be

replaced by a qualified person or a Powell

Service technician. Contact Powell for further

assistance at 1.800.480.7273.

CAUTION

Ensure all operating springs are discharged

and the circuit breaker is in the open position.

Failure to do so may result in personal injury

and /or damage to circuit breaker.

This assembly is located between the upper

and lower primary disconnecting devices

(Figure 3, f).

a. Remove the front cover of the circuit

breaker.

b. Remove the interphase barrier

assembly.

c. Measure and record the height of the

opening springs.

d. Relieve the tension on the opening

springs by removing the locknuts

and the hex nuts found on top of

the opening springs. During this

operation hold the circuit breaker open

by inserting a large screwdriver or a

similar tool under the pin connecting

the opening spring rod to the jackshaft

levers and over the spacer that contacts

the open position stop bolt, then

apply pressure upward. The jackshaft

will rotate to the vacuum interrupter

“contact touch” position when the

tension is relieved from the opening

springs and the pressure on the tool

holding the circuit breaker open is

relaxed (Figure 28).

Figure 28 Tension Relieved on Opening Springs

e. If present, loosen the set screw holding

the operating yoke to the operating pin.

Remove the X-washer from one end of

the vacuum interrupter operating pin

and remove the pin (Figure 29). The

X-washer can be opened by squeezing

the two projecting tabs with pliers.

Discard the X-washer after removal.

Figure 29 Operating Pin Removal

f. Remove the four socket head screws,

two on each side which holds the

sliding contact finger assemblies and

pivot the assemblies downward.

g. Unscrew and remove the operating

yoke at the lower end of the vacuum

interrupter.

h. Loosen, but do not remove the two

bolts through the upper contact block.

Courtesy of NationalSwitchgear.com

Содержание PowlVac IB-60201

Страница 1: ...IB 60201 PowlVac STD Vacuum Circuit Breaker 5kV 15kV 1200A 2000A 3000A Powered by Safety Courtesy of NationalSwitchgear com...

Страница 2: ...Circuit Breaker IB 60201 Contact Information Powell Electrical Systems Inc www powellind com info powellind com Service Division PO Box 12818 Houston Texas 77217 2818 Tel 713 944 6900 Fax 713 948 456...

Страница 3: ...2002 4 13 4 13 3 as a signal word but used in this manual is IMPORTANT This is defined as IMPORTANT indicates a section of the manual covering a non hazardous situation but one where Powell feels pro...

Страница 4: ...Powered by Safety PowlVac STD Vacuum Circuit Breaker IB 60201 This page is intentionally left blank Courtesy of NationalSwitchgear com...

Страница 5: ...hanism 6 1 Mechanical Description 6 2 Electrical Description 16 C Racking Mechanism 17 1 General Description 17 2 Standard Racking Mechanism 19 D Circuit Breaker Compartment Interfaces 19 1 Primary Di...

Страница 6: ...ircuit Breaker to the Connected Position 31 F Removing the Circuit Breaker from the Circuit Breaker Compartment 33 1 Removing the Circuit Breaker from the Connected to the Test Disconnected Position 3...

Страница 7: ...intenance Procedures 51 1 High Potential Tests 51 2 Timing 51 3 Primary Resistance Check 52 Ch 6 Recommended Renewal Parts and Replacement Procedures 53 A Ordering Instructions 53 B Recommended Renewa...

Страница 8: ...d Circuit Breaker in Test Position 31 Figure 15 Pushing Manual Trip Operator Accessing Racking Drive Shaft 32 Figure 16 Racking the Standard Circuit Breaker 32 Figure 17 Racking Drive Shaft Extension...

Страница 9: ...Table A Field Dielectric Test Values 23 Table B Lubrication 41 Table C Timing 51 Table D Primary Resistance 52 Table E Primary Current Path 63 Table F Control Devices 64 Table G Miscellaneous Parts 66...

Страница 10: ...Powered by Safety vi PowlVac STD Vacuum Circuit Breaker IB 60201 This page is intentionally left blank Courtesy of NationalSwitchgear com...

Страница 11: ...act is performed requiring physical contact with the electrical working components or wiring of this equipment the power supply must be disconnected Failure to follow this warning may result in injur...

Страница 12: ...ts 7 Illustrations photographs and description of the circuit breaker The illustrations contained in this document may not represent the exact construction details of each particular type of PowlVac S...

Страница 13: ...exists ground the phase conductors or circuit parts before touching them Where it could be reasonably anticipated that the conductors or circuit parts being deenergized could contact other exposed en...

Страница 14: ...ve it from the metal clad switchgear 2 DO NOT WORK ON A CIRCUIT BREAKER WITH THE CONTROL CIRCUIT ENERGIZED 3 EXTREME CARE MUST BE EXERCISED TO KEEP ALL PERSONNEL TOOLS AND OTHER OBJECTS CLEAR OF MECHA...

Страница 15: ...the test personnel be no closer than one meter 3 from the front of the circuit breaker THE CIRCUIT BREAKER SHALL BE EITHER FULLY OPEN OR FULLY CLOSED WHEN MAKING HIGH POTENTIAL TESTS DO NOT TEST WITH...

Страница 16: ...of the circuit breaker between the test disconnected and connected positions The racking mechanism provides the motion to engage disengage the primary disconnecting devices and to open close the shutt...

Страница 17: ...tter e Nameplate f Padlock Provision Stationary Clip g Padlock Provision Movable Arm h Manual Trip Operator i Handle j Manual Charging Crank k MOC Actuator l Circuit Breaker Open Closed Indicator m Se...

Страница 18: ...et Spring l Camshaft m Main Closing Cam n Auxiliary Switch o Charging Motor p Secondary Trip Prop Adjusting Screw q Latch Check Switch r Jackshaft s Holding Pawl Support Arm t Crank Pin u Holding Pawl...

Страница 19: ...t Latch i Frame j Wheel k Crank Arm Roller l Racking Crank Arm m Racking Shaft n Worm Gear o Racking Drive Shaft p Ground Connection q Serial Number Plate r Sliding Contact Finger Assembly s Operating...

Страница 20: ...pawl adjusting eccentric Figure 2 u located to the left front of the mechanism When the mechanism is operated manually the top pawl becomes the drive pawl and the bottom pawl becomes the holding pawl...

Страница 21: ...tion IB 60201 Figure 4 Cam and Fundamental Linkage Positions a Breaker Open Spring Charged Links Reset b Breaker Closed Spring Discharged c Breaker Open Spring Discharged d Breaker Closed Spring Charg...

Страница 22: ...p Adjusting Screw b Secondary Trop Prop Shaft c Secondary Trip Prop d Secondary Linkage Roller e Main Cam Roller f Reset Spring g Camshaft h Main Closing Cam i Center Phase Operating Lever j Jackshaft...

Страница 23: ...uum interrupter assembly thus moving the vacuum interrupter contact The bell cranks give an approximate 3 to 1 multiplication of the contact loading spring force enabling a lower spring rate to be use...

Страница 24: ...LS Makes LS Breaks LS Makes 52 b Breaks VCB Closed White Light Deenergized Motor M Energized Prevents Close Coil Energization Before Spring is Fully Charged Y Coil Energized Close Coil CC Deenergized...

Страница 25: ...M Bkr Closing Springs Charging Motor 52 b Normally Closed Bkr Auxiliary Switch Contact 52 a Normally Open Bkr Auxiliary Switch Contact Y Y Anti Pump Relay LCS Latch Check Switch PR Protective Relaying...

Страница 26: ...in closing spring is fully charged and the stored energy mechanism is ready for a closing operation It is located at the bottom right of the mechanism and is supported by a bracket which is bolted to...

Страница 27: ...he connected or the test disconnected positions When the breaker position indicator displays BREAKER CONNECTED and this is fully visible in the aperture the circuit breaker is in the connected positio...

Страница 28: ...trip operator is mechanically held in the inward actuated position when the shutter is down and the shutter can be raised in only the test disconnected or connected positions due to the pin and cam a...

Страница 29: ...icator on the front of the circuit breaker will display BREAKER CONNECTED D Circuit Breaker Compartment Interfaces 1 Primary Disconnecting Devices There are six primary disconnecting devices on the ci...

Страница 30: ...hich allows the primary disconnecting devices to connect disconnect Downward movement of the crank arms rollers in the slots will move the shutters to the fully open position before the circuit breake...

Страница 31: ...lad switchgear assembly is installed in a Power Control Room a circuit breaker housed in the lower circuit breaker compartment may be shipped installed in the equipment In these cases the circuit brea...

Страница 32: ...adverse effect on the insulating parts the circuit breaker should be carefully protected against condensation preferably by storing it in a warm dry room of moderate temperature such as 40 100 F Circu...

Страница 33: ...mits cannot be given for satisfactory insulation values when testing with an insulation resistance tester a record should be kept of the insulation resistance tester readings as well as the temperatur...

Страница 34: ...The radiation may increase with increased voltage and or decreased contact spacing X radiation produced during this test with the voltage specified in Table A and normal contact spacing is extremely l...

Страница 35: ...ON CAUTION If DC high potential testing hipot is required the DC high potential test machine must not produce instantaneous peak voltages exceeding 50kV CAUTION CAUTION No attempt should be made to tr...

Страница 36: ...cts clear of mechanism which are to be operated or released CAUTION CAUTION Push the manual close operator Figure 1 n inward and the circuit breaker will close The circuit breaker open closed indicato...

Страница 37: ...the compartment and to the circuit breaker Insert the fuses The charging motor will automatically charge the stored energy mechanism s main closing springs Operation of the breaker control switch on...

Страница 38: ...sition indicator displays BREAKER TEST DISCONNECTED With the racking crank arms in this position the secondary disconnect override device may be removed from the secondary disconnect receptacle Pole u...

Страница 39: ...racking procedures apply only for indoor type and non arc resistant constructions For all other constructions refer to the appropriate instructions or instruction bulletin s for the applicable rackin...

Страница 40: ...Before attempting any racking procedure review Chapter 2 IMPORTANT IMPORTANT 2 Inserting the Circuit Breaker to the Test Disconnected Position Prior to inserting the circuit breaker into the circuit...

Страница 41: ...is is the Test Position Figure 14 Standard Circuit Breaker in Test Position 3 Inserting the Circuit Breaker to the Connected Position Prior to inserting the circuit breaker into the circuit breaker co...

Страница 42: ...the racking handle will cause the circuit breaker to travel further into the compartment ensuring wipe or overlap of the primary disconnecting devices Continue racking until the breaker position indi...

Страница 43: ...handle socket onto the racking drive shaft shutter The racking handle socket may be used to push down the shutter to gain access to the racking drive c Release the manual trip operator It will remain...

Страница 44: ...lign the wheels with the floor pan channels of the compartment Verify that the floor pan channels are free of debris prior to inserting the circuit breaker c Roll the circuit breaker in the compartmen...

Страница 45: ...follow the breaker with the racking handle as it travels to the connected position IMPORTANT IMPORTANT Figure 17 Racking Drive Shaft Extension Insertion a c b a Racking Drive Shaft Extension b Manual...

Страница 46: ...wipe or overlap of the primary disconnecting devices Continue racking until the breaker position indicator displays BREAKER CONNECTED This will be approximately 22 rotations from the starting point W...

Страница 47: ...hold the manual trip operator and simultaneously open the racking drive shaft shutter Place the racking drive shaft extension onto the racking drive shaft The racking drive shaft extension socket may...

Страница 48: ...Store the plug so it will not be damaged while withdrawing the circuit breaker Note Removing the secondary disconnect plug will trip a closed breaker and discharge the main closing spring c Press the...

Страница 49: ...rcuit breaker is known to have interrupted a fault current at or near its rating it is recommended that the circuit breaker be inspected and the necessary maintenance be performed as soon as practical...

Страница 50: ...e cloth or an industrial type wiper to clean the circuit breaker Do not use solvents de greasers or any aerosol products to clean in the area of any mechanisms Refer to Ch 5 Maintenance B Mechanism Ar...

Страница 51: ...xcess Ratchet Wheel Figure 21 l Rheolube 368A Grease Jackshaft Lever Pins passing through Operating Pushrods Figure 21 j Anderol 456 Oil Avoid lubricating on operating pushrods Main Closing Spring Gui...

Страница 52: ...k Pin n Close Latch Shaft Face m Motor Drive Shaft Roller Needle Bearings e Fundamental Linkage Pin f Jackshaft Support l Ratchet Wheel k Pawls d Trip Shaft Bearing b Primary Disconnecting Device j Ja...

Страница 53: ...rings Support ad Wheel z Motor Drive Shaft Coupling t Fundamental Linkage ac Motor Cutoff Cam y Close Shaft Support Bearing aa Camshaft Needle Bearings ab Motor Drive Shaft Support Bearings Figure 22...

Страница 54: ...B Lubrication See Figures 21 and 22 for labeled lubrication photographs Table B Lubrication lists the location of all surfaces that should be lubricated the type of lubricant to be used and the method...

Страница 55: ...ocation of the flat washer lock washer and spacer Figure 24 When any maintenance procedure requires the opening or closing of the circuit breaker or the charging of any of the stored energy mechanism...

Страница 56: ...atchet mechanism is operating or the stored energy mechanism will not ratchet at all To adjust the pawl perform the following steps 1 Remove the escutcheon to gain access to the head of the bolt holdi...

Страница 57: ...all high voltage components shall be deenergized disconnected by means of a visible break and securely grounded WARNING WARNING To adjust the PowlVac STD Tripping System perform the following steps 1...

Страница 58: ...the circuit breaker TRIPPED during the test performed in step 12 increase the gap between the trip coil armature and the trip lever by bending the trip lever downwards slightly using channel lock pli...

Страница 59: ...Mechanism Area 3 Closing Spring Removal 2 Rotate the crank arms until the spring charge indicator displays CLOSING SPRING CHARGED 3 Loosen the two screws which secure the latch check switch and rotate...

Страница 60: ...adjusting screw clockwise until the main closing spring discharges then depress the manual trip operator to OPEN the circuit breaker 6 Turn the close bar adjusting screw 3 to 3 full turns counterclock...

Страница 61: ...t required for routine maintenance but are recommended after a heavy fault interruption any major circuit breaker repair that involves the primary current path or when the circuit breaker has been in...

Страница 62: ...both main horizontal primary disconnecting devices of each pair or the resistance measurement will be affected This may be done by connecting the current source leads to two blocks of full round edge...

Страница 63: ...and G list the recommended spare parts to be carried in stock by the user The recommended quantity is not specified This must be determined by the user based on the application As a minimum it is rec...

Страница 64: ...inserting a large screwdriver or a similar tool under the pin connecting the opening spring rod to the jackshaft levers and over the spacer that contacts the open position stop bolt then apply pressu...

Страница 65: ...upter Position the block at the approximate location measured in step l The exact location of the block is not critical as it will be adjusted in a following step The block should be rotated until the...

Страница 66: ...ide while adjusting the height of the operating yoke in increments of turn to achieve best fit Figure 32 u Remove the pin and reassemble the bell cranks Figure 32 Operating Yoke Setting v Lubricate th...

Страница 67: ...downward decreases the stroke turning it upward increases the stroke Each turn of the operating yoke will change the stroke by approximately 0 05 CAUTION CAUTION If adjustment of the operating yoke i...

Страница 68: ...hould be replaced The sliding contact finger assemblies on the PowlVac circuit breakers are reversible Since only the upper ends of the fingers experience any wiping action the wear is normally confin...

Страница 69: ...assembly in place and reconnect it to the wiring harness d Perform the Tripping System Adjustment found in Ch 5 Maintenance B Mechanism Area 5 Mechanism Adjustments c Tripping System Adjustment e Trip...

Страница 70: ...or to the right disconnecting the motor shaft from the mechanism and lift the motor out d Lubricate the end of the shaft of the new charging motor generously with Rheolube 368A grease e Position the n...

Страница 71: ...eaded c Disconnect wires from the switch d Connect the wires to the new switch and fasten switch in place with screws and nut plate previously removed e Adjust the switch To adjust the switch see Ch 5...

Страница 72: ...tch and attach it to the mounting bracket with the two screws removed in Step d f Insert the operating arm of the switch into the hole at the end of the operations counter linkage and secure it with t...

Страница 73: ...50 4 76 2000A 50956G01P 50403P01 50934G20P 60501G03P 05PV50 4 76 3000A 50956G02P 50403P01 50934G20P 60500G03P 15PV25 15 1200A 50952G01P 50403P04 50934G18P 60501G01P 15PV25 15 2000A 50952G01P 50403P01...

Страница 74: ...041G04P 50042G05P n a n a n a n a Notes 1 One required per circuit breaker if the circuit breaker was originally equipped with this item All circuit breakers have a closing coil primary shunt trip coi...

Страница 75: ...t Procedures IB 60201 Figure 34 Control Devices a Primary Shunt Trip Coil 3 cycle b Primary Shunt Trip Coil 5 cycle c Charging Motor Assembly d Closing Coil Assembly e Anti Pump Relay f Undervoltage D...

Страница 76: ...Illustration Auxiliary Switch Push On Terminals 102108LN Screw On Terminals 102108LP Ground Connection 25kA 50951G02P 36kA 50952G03P 50kA 50952G02P Latch Check Switch BA 2RV2 A2 Motor Cutoff Switch As...

Страница 77: ...ston PO Box 12818 Houston TX 77217 Tel 713 944 6900 Fax 713 948 4569 www powellind com info powellind com 2006 Powell Industries Inc All rights reserved 5kV 15kV 1200A 2000A 3000A IB 60201 PowlVac STD...

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