Cooper - Recloser - 3Ph Hydraulic - Types W WV VW - Catal.pdf

8/14/2019 Cooper - Recloser - 3Ph Hydraulic - Types W WV VW - Catal.pdf

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Kyle®

W-group three-phase automat-ic, circuit reclosers provide reliable,economical overcurrent protection fordistribution circuits rated through 38kV. Compact and self-contained inoperations, these reclosers can beeasily installed on poles and in sub-stations. Employing the service-proven hydraulic control, the W-group reclosers can be readily coor-dinated with circuit breakers, section-alizers, fuses, and other reclosers onthe distribution system.

Kyle reclosers in a distribution sys-tem protection scheme offer signifi-cant user advantages. Their broadapplication capabilities permit theuser to select exactly the right reclos-er for the protection required. Whenneeded, application expertise—backed by world-wide recloser appli-cation experience—is readily avail-able. Knowledgeable design capabil-ity—based on over 50 solid years ofrecloser manufacturingexperience—is the backbone of ourdependable reclosers. Progressivedevelopment programs using the lat-est technologies have resulted in themodern, efficient Kyle reclosers.

W-group reclosers, like all Kyle

reclosers, are designed and builtin accordance with ANSI C37.60.

Six distinct types—W, WV27,WV38X, VW, VWV27, and VWV38X—within the W-group offer a broadrange of voltage, continuous current,and interrupting ratings. Accessoriespermit tailoring a recloser to specificapplication requirements. Mountingequipment for pole and substationfacilitates installing a recloser pre-cisely where system requirementsdemand its protection.

BASIC RATINGS

W and VW reclosers protect systemsrated 2.4 through 14.4 kV; WV27 andVWV27 reclosers protect systemsrated through 24.9 kV; and WV38Xand VWV38X reclosers protect sys-tems rated through 34.5 kV. Table 1summarizes the ratings of the W-group reclosers. For basic ratingsand application information for all Kyle reclosers, see Catalog Section280-05.

BASIC CHARACTERISTICSW-group reclosers are hydraulicallycontrolled protective devices inwhich tripping is initiated by a serietrip coil that releases the stored-enegy trip mechanism when an overcurrent occurs. Current-carrying andinterrupting capacities depend on trating of the recloser series trip coilMinimum-trip current is 200% of thecoil rating, except X coil ratingswhich initiate tripping at approx-imately 140%.

A closing solenoid supplies theenergy for contact closing and also

stores energy in the trip mechanismHigh-voltage closing solenoids areconnected to the system on thesource side of the recloser. Solenoidphase-to-phase voltage rating isbased on the system operating volt-age. Low-voltage closing solenoidscan be used if auxiliary voltage issupplied to the recloser.

Dual time-current characteristicspermit coordinating W-group re-closers with other protective deviceon a distribution system. Fast-curvetrip operations are followed by tripoperations on a delayed curve. Achoice of four delayed characteristiallows flexibility in system coordina-tion. Ground tripping is available asan accessory. A variety of operatingindicating, and service accessoriesextends a W-group recloser’s normaflexibility even further.

Oil InterruptionW, WV27, and WV38X reclosers useoil as the arc-interrupting medium.Movable bridge-type contacts pro-vide two breaks in series on eachphase. Separate self-generatinginterrupter chambers at each of thetwo breaks effectively interrupt all

currents from minimum load to ratedmaximum fault.

Electrical Apparatu

Types W, WV27, WV38X, VW, VWV27, and VWV38X;Three-Phase; Hydraulically Controlled

Reclosers

280-30

July 1992 • Supersedes 1/90 • ©1992 Cooper Power Systems, Inc.Printed in U.S.A.

Figure 1.Type W 14.4-kV automatic circuitrecloser with oil interrupters.

Figure 2.Type VWV27 24.9-kV automatic circuit

recloser with vacuum interrupters.

Maximum Maximum InterruptingNominal Continuous Rating at NominalVoltage Current Voltage Interrupting Recloser

(kV) (amps) (sym amps) Medium Type

14.4 560 10000 Oil W14.4 560 12000 Vacuum VW24.9 560 8000 Oil WV2724.9 560 12000 Vacuum VWV2734.5 560 8000 Oil WV38X34.5 560 12000 Vacuum VWV38X

TABLE 1Basic Ratings

82275KMA

85639KMA





TABLE 2Closing Solenoid Voltage CodeNumbers

Phase-to-Phase ClosingSolenoid

Operating Voltage ± 15% Code(kV) No.

2.4............................................. 13.3............................................. 104.16-4.8..................................... 26.0............................................. 67.2-8.32..................................... 311.0........................................... 912.0-13.2................................... 414.4........................................... 517.0........................................... 1220.0........................................... 1123.0-24.9................................... 1334.5........................................... 14

Low-Voltage ClosingSolenoid Operating Voltage

(Vdc)

125............................................ 7*250............................................ 8*

* Requires either low-voltage dc closing accessory(KA631R) or low-voltage ac closing accessory(KA742R). Ordered separately.

280-3

CatalogDescription Number**

Types W and VWThree 600:5 BCTs on 115 / 8-in. creepage bushings.......................................... KA804W3XThree 600:5 BCTs on 17-in. creepage bushings............................................. KA110W3X**Three 1200:5 BCTs on 115 / 8-in. creepage bushings........................................ KA827W3X

Types WV27 and VWV27Three 600:5 BCTs on 261 / 2-in. creepage bushings.......................................... KA14WV3XThree 1200:5 BCTs 261 / 2-in. creepage bushings............................................. KA24WV3X

Types WV38X and VWV38XThree 600:5 BCTs on 261 / 2-in. creepage bushings.......................................... KA82WV3XThree 1200:5 BCTs on 261 / 2-in. creepage bushings........................................ KA83WV3X

TABLE 3Multi-Ratio Bushing Current Sensing Transformers Factory-Installed on Load-Side Bushings 2, 4, and 6*

* To specify accessory BCTs on source-side bushings, include the digit 9 after the A in the catalog numberand specify source-side bushings in the order description.

** If factory wiring is ordered, replace the X in the catalog number with the ratio to be connected: 1200 =1200:5; 1000 = 1000:5; 900 = 900:5; 800 = 800:5; 600 = 600:5; 500 = 500:5; 450 = 450:5; 400 = 400:5;300 = 300:5; 250 = 250:5; 200 = 200:5; 150 = 150:5; 100 = 100:5; 50 = 50:5.

*** Catalog number includes the extra-creepage bushings.

TABLE 4600:5 Multi-Ratio Bushing Current Transformers for Field Installation

CatalogDescription Number

Slip-on bushings current transformer kit; one BCT per kit................................. KA712L2Set of 3 BCTs...................................................................................................... KA712L2-3Wiring kit for KA712L2-3 (one wiring kit required per recloser)......................... KA895R7*

TABLE 5Metering


Set of three outdoor, socket-mounted, thermal demand meters; five-ampmovement/five-amp scale With instantaneous indicating elements................ KRW324V1-3Without instantaneous indicating elements..................................................... KRW324V20-

Vertical, rain-tight meter trough; three sockets with circuit closing contacts..... KA335R903**

* Requires KA335R903 trough.** KA89WV4 bracket required if meters are to be mounted on KA89WV1 substation frame.

TABLE 6Service-Related; Hardware


Junction box with terminal block; factory-installed............................................ KA187RManual closing tool; de-energized recloser, factory-installed

W, VW, WV27, and VWV27.............................................................................. KA476RWV38X, VWV38X............................................................................................. KA66WV

T-handle closing tool: de-energized recloser..................................................... KA90R2Oil-level sight gauge; factory-installed............................................................... KA161W

* Includes 7-ft. cable. If longer cable is required, specify length on order.




Hydraulic ground trip*................................................................................... KA510R2XXX**

Hydraulic ground trip with modified fast curve*........................................... KA510R4XXX**Electronic ground trip; minimum-trip current and timing curves must be

specified***Types W and WV27.................................................................................... KA1219R1Types VW and VWV27................................................................................ KA1219R2Types W and WV27 with KA742, ac closing.............................................. KA1219R3Types VW and VWV27 with KA742, ac closing.......................................... KA1219R4Type WV38X............................................................................................... KA62WV1Type VWV38X............................................................................................. KA62WV2Type WV38X with KA742, ac closing......................................................... KA62WV3Type VWV38X with KA742, ac closing....................................................... KA62WV4

Specify minimum-trip resistorSelect minimum-trip current of 5, 10, 20, 30, 50, 70, 100, 140, 200,

280, 320, or 400 ampsMinimum-trip resistor______amps...................................................... KA1197R__****

Specify constant time plug in first socketSelect timing plug 1, 2, 3, 4, 5, 6, 7, 8, or 9

Timing plug______.............................................................................. KA1199R__-1__†Specify constant time plug in second socket

Select timing plug 1, 2, 3, 4, 5, 6, 7, 8, or 9Timing Plug______.............................................................................. KA1199R__-2__†

-OR-Specify inverse time plug in first socket

Select timing plug 1, 2, 3, 4, 5, or 6Timing plug______.............................................................................. KA1200R__-1__†

Specify inverse time plug in second socketSelect timing plug 1, 2, 3, 4, 5, or 6

Timing plug______.............................................................................. KA1200R__-2__†Ground-trip blocking switch for KA510R, KA1219R, and KA62WV

With manual switch handle. (Not mounted or wired. Generally usedwhen recloser is mounted in KA89WV1 frame and switch is to bemounted on frame. Also for mounting remote from recloser.).................. KA813R1††

With pullring for hookstick (Mounted on recloser and wired to junctionbox. Cannot be used if recloser is mounted in KA89WV1 frame or in

KA146W5 frame that has a KA146W2 windlass.).................................... KA813R2††With pullring for hookstick; for use when recloser is mounted in

KA89WV1 frame or in KA146W5 frame that has a KA146W2 windlass.(Mounted on recloser and wired to junction box.)................................... KA813R4†††

Dual reclosing timeFirst reclosing: 30 cycles............................................................................ KA547R1First reclosing: 45 cycles............................................................................ KA547R2

One-shot to lockout accessory...................................................................... KA1187R

* Requires KA187R junction box with terminal block, multi-ratio BCT accessory as shown in Table 3, and aKA843R, factory wiring, or either KA817W2 or KA850R, factory assembly, to complete wiring from multi-ratio BCTs to the ground trip mechanism. Hydraulic ground trip accessory cannot be used on a recloserthat has a KA378R remote trip.

** Replace X’s in catalog number in following sequence from left to right: number of time-delay curvedesired; number of fast operations (0, 1, 2, 3, or 4); and the numeral 1 for series-connected or the numeral2 for parallel-connected coils.

*** NOTE: Electronic ground trip accessory cannot be used on a recloser that has KA378R remote trip,KA631R dc closing, KA275R or KA276R remote block of closing, or KA1169R closing coiltransfer switch.

**** Complete the catalog number by specifying the selected value of the component.

† Complete the catalog number by specifying the selected value for the component and the number of oper-ations.

††Requires KA187R junction box with terminal block.†††Junction box is included with accessory; do not order separately.

TABLE 7Automatic Tripping and Closing; Factory-Installed


Three-stage auxiliary switchwith six independent con-tacts..................................... KA369R3

Lockout-indicating switch;dpdt contacts operated byrecloser operating handle... KA296R1

Remote trip120 Vac............................... KA378R1*240 Vac............................... KA378R2*24 Vdc................................. KA378R5*48 Vdc................................. KA378R4*125 Vdc............................... KA378R3*

Remote lockout120 Vac............................... KA475R1**240 Vac............................... KA475R2**24 Vdc................................. KA475R3**48 Vdc................................. KA475R4**

125 Vdc............................... KA475R5**Remote close

120 Vac............................... KA486R1240 Vac............................... KA486R248 Vdc................................. KA486R4125 Vdc............................... KA486R3

Remote block of closing withcoil de-energized120 Vac............................... KA275R1***240 Vac or 125 Vdc............. KA275R2***

Remote block of closing withcoil energized120 Vac............................... KA276R1***240 Vac or 125 Vdc............. KA276R2***

TABLE 8Remote Operation and Indication;Factory-Installed

* Requires KA187R junction box with terminal block.Remote trip cannot be used on a recloser that hasKA510R, KA62WV, or KA1219R ground trip acces-

sories.** Requires KA187R junction box with terminal block.*** Requires KA187R junction box with terminal block.

Remote block of closing accessories cannot beused on a recloser that has a KA1219R orKA62WV electronic ground trip.

Types W, WV27, WV38X, VW, VWV27, VWV38X; Three Phase; Hydraulically Controlled



280-3


Low-voltage dc closing, requires that recloser be ordered with dc closing coil

48 VdcTypes W, WV27, WV38X................................................................................. KA631R11**Types VW, VWV27, VWV38X.......................................................................... KA631R13**



Low-voltage ac closing; with KA1219 or KA62WV,electronic ground trip; requires that recloser be ordered with dc closing coil120 Vac

Types W, WV27, WV38X................................................................................. KA742R22***Types VW, VWV27, VWV38X.......................................................................... KA742R24***

240 VacTypes W, WV27, WV38X................................................................................. KA742R23Types VW, VWV27, VWV38X.......................................................................... KA742R25

Low-voltage ac closing, without ground trip, requires that recloser be orderedwith dc closing coil120 Vac

Types W, WV27, WV38X................................................................................ KA742R1***Types VW, VWV27, VWV38X.......................................................................... KA742R5***

240 VacTypes W, WV27, WV38X................................................................................. KA742R2***Types VW, VWV27, VWV38X.......................................................................... KA742R6***

Closing-coil transfer switchType W.............................................................................................................. KA1169R3*Type WV27†...................................................................................................... KA1169R4*Type VW............................................................................................................ KA1169R9*Type VWV27..................................................................................................... KA1169R10*

TABLE 9Low-Voltage Closing and Transfer Switch; Factory-Installed

* Closing-coil transfer switch is not compatible with the KA62WV or KA1219R ground trip accessories,KA631R dc closing, or KA742R ac closing.

** Requires KA187R junction box with terminal block. Dc closing accessory cannot be used on a recloser thathas a KA1219R or KA62WV ground tr ip.

***Requires KA187R junction box with terminal block.† Transfer switch can be used on 2.4-24.9 kV systems. It has a maximum voltage rating of 27 kV and limits therating of the recloser to 125 kV BIL. I t can be used with 34.5 kV rated reclosers, applied on systems withvoltages of 27 kV or less.


17-in. creepage standard length bushingsTypes W and VW.................................................................................................. KA25W

Flat-pad terminals, two-holeTypes W, VW with 115 / 8-in. or 17-in. creepage, standard or CT length

bushings............................................................................................................ KA82W1Types WV27, WV38X, VWV27, VWV38X with 261 / 2-in. creepage, standard

length bushings................................................................................................. KA62RV3Types WV27, WV38X, VWV27, VWV38X with 261 / 2 in. creepage, CT length

bushings............................................................................................................ KA62RV4Flat-pad terminals, four-holeTypes W, VW with 115 / 8-in. or 17-in. creepage, standard or CT length

bushings............................................................................................................ KA156W1Types WV27 and VWV27 with 261 / 2-in. creepage, standard length bushings...... KA61RV3Types WV27 and VWV27 with 261 / 2-in. creepage, CT length bushings............... KA61RV4

Stud terminals, 11 / 8-12 UNF-2ATypes W, VW with 115 / 8-in or 17-in. creepage, standard or CT length

bushings............................................................................................................ KA800W1Types WV27, WV38X, VWV27, VWV38X with 261 / 2-in. creepage, standard

length bushings................................................................................................. KA59RV3Types WV27, WV38X, VWV27, VWV38X with 261 / 2-in. creepage, CT lengthbushings ............................................................................................................. KA59RV4

TABLE 10Bushings and Terminals; Factory-Installed (set of six)




Substation mounting equipment

Basic mounting frame.......................................................................................... KA89WV1Bracket for mounting three-socket meter trough to KA89WV1 frame.................. KA89WV4Hardware for attaching KA813R ground-trip blocking switch to KA89WV1

frame.................................................................................................................. KA89WV6*Removable tank-lifting windlass for KA89WV1 frame.......................................... KA89WV2

Pole-mounting equipmentSingle-pole mounting hanger............................................................................... KA146W5*End-mounted pole hanger .................................................................................. KA706R3

Tank-lifting windlass for single-pole hanger........................................................... KA146W2Surge arrester mounting bracket

Inboard (source).................................................................................................. KA805WVOutboard (load)................................................................................................... KA847W

TABLE 13Mounting Equipment

* KA89WV6 is not required when meter-trough mounting brackets are ordered.** Requires KA883R, BCT conduit assembly, when recloser has source-side BCTs.

Catalog

Description NumberRecloser on frame; no acces-

sories with or without BCTs... KA813WRecloser on frame with load-

side BCTs wired to metertrough.................................... KA820W2

Recloser on frame with source-side BCTs wired to metertrough.................................... KA821W2

TABLE 11Factory Assembly of Recloser andAccessories in KA89WV1 SubstationMounting Frame*

* Includes factory assembly only; recloser, acces-sories, and mounting frame must be ordered separ-atly.


Recloser in KA146W5; with orwithout BCTs.......................... KA881R2

Recloser in KA706R1; with orwithout BCTs.......................... KA881R1

TABLE 12Factory assembly of Recloser in Pole-Mounting Frames*

* Includes factory assembling only; recloser andmounting must be specified separately.


TABLE 14Factory Assembly of Conduit and Wiring*


BCTs wired to KA510R1 hydraulic ground trip through KA187R junction box.If recloser is to be mounted with a KA146W5 frame and BCTs are on the poleside, a KA883R2 conduit kit must be specified

Types W, VW, WV27, VWV27............................................................................. KA843RTypes WV38X, VWV38X.................................................................................... KA80WV

TABLE 15Conduit and Wiring Kits for Field Installation*


Recloser in KA89WV1 substation frameKit for wiring load-side BCTs to meter trough...................................................... KA820W3

Recloser in KA146W5 single-pole mounting frameCable for wiring BCTs to meter trough on Types W, VW, WV27, and VWV27...... KA885R7**Cable for wiring BCTs to meter trough on Types WV38X and VWV38X............... KA87WV1**

* A kit includes all conduit and wire necessary to connect recloser and accessories specified. Kits are shippeddisassembled.

** Includes 7-ft. cable. If longer cable is required, specify length on order.

TABLE 16Training-Related; Equipment Maintenance and Operation Video CassettePrograms


Specify the video cassette__format; add format code letter as suffix to catalognumber. A=VHS, B=Beta, C=3 / 4”, D=1”,E=PAL

General Maintenance and Inspection Procedures for Kyle Reclosers videocassette (28 min.)................................................................................................ KSPV1__

Mechanical Operation, Service and Testing for Kyle Three-Phase HydraulicReclosers video cassette (28 min.).................................................................... KSPV5__

* Includes factory assembling only; recloser, accessories, and mounting must be specified separately.



280-3

BASIC RECLOSER DESIGNKyle three-phase W-group reclosers

are designed to protect circuits onsystems operating through 34.5 kV.With the ratings available and theability of these reclosers to coordi-nate with other protective equip-ment—including lower-ratedreclosers—they can be applied in avariety of schemes.

Range of protection can be extend-ed by a ground-trip accessory whichprovides protection against ground-

fault currents that are less than theminimum-trip value of the series coils.Flexibility of application is greatly

enhanced by accessories that enableremote control of the recloser.

Closing energy is supplied by aclosing solenoid which simultaneous-ly charges the opening springs inpreparation for a tripping operation.Fault currents are sensed by trip coils(connected in series with the reclosercontacts) that initiate the trippingoperation by releasing the openingsprings.

Series tripping provides simple anreliable operation because the energy to initiate the tripping operation is

taken directly from the line. W-groupreclosers are self-contained; i.e., therequire no external control or contropower source.

The hydraulic control incorporatesseparate elements to govern time-delay operations and regulate thenumber of operations to lockout. ThW-group basic design has beenproven by more than 40 years of fieservice.

Figure 3.Untanked Type WV recloser shown from series trip coil side. Construction of Types WV27, WV38X, VW, VWV27 and VWV38is similar except for the vacuum interrupters on VW, VWV27, and VWV38X; see Figure 4.

Features and Detailed Description

85632K



CONSTRUCTIONLike all the other Kyle reclosers, theW-group reclosers are designed forlong service life with little mainte-nance. Heads are aluminum cast-ings. Tanks are heavy-gage steel, fin-ished with light gray polyester pow-der paint (Munsell 5BG 7.0/0.4,ASA70). A Buna-N o-ring gasket con-fined in a groove, for controlled com-pression, assures an oil-tight sealbetween the head and the tank. A1

/ 2-in. brass oil sampling and drainvalve near the bottom of the tank isstandard.

The entire internal mechanism issuspended from the head casting sothat the mechanism and the headassembly can be removed from thetank as a unit. Reclosers are mount-ed by brackets that can be attachedto the head casting. This permitseasy access to the contacts and themechanism in the field by loweringthe tank with a wire-rope winch whichis available as an accessory.

The insulating supports from whichthe three interrupters are suspendedare filament-wound glass epoxy forhigh electrical and mechanicalstrength and moisture resistance.

OPERATIONSeries Trip CoilFault current in the W-group issensed by the three trip coils whichare connected in series with therecloser contacts and which can

carry line current up to their rating.Coils of applicable ratings are inter-changeable among the W-groupreclosers. Continuous current andminimum trip ratings can bechanged by replacing the coils.

When fault current in excess of theminimum trip ratings flows on one ormore phases, the trip solenoidplunger—which is normally held atrest by the mechanism—is drawninto the coil by the magnetic effectgenerated by the fault current. Nearthe end of the downward stroke, a

linkage connected to the trip plungertrips a latch which releases thecharged opening springs and therecloser contacts are opened.

The series trip coil is surge-protect-ed by a shunting bypass gap onreclosers with trip coils rated below100 amps.

Independent fault detection oneach phase is provided by separatetrip coils. A common bar trips allthree phases, preventing single-

phase supply to three-phase loads. Atrip coil carrying a higher fault cur-rent will override and cause fastertripping than a phase experiencing alower fault current.


Figure 4.

Untanked view of a VW recloser shown from hydraulic pump side.

84604KMA



Closing SolenoidClosing energy—as well as the energy to charge the opening springs inthe W-group reclosers—is suppliedby a high-voltage closing solenoid

which is connected phase-to-phaseand energized through a contactor.When the recloser contacts areclosed, the solenoid plunger islatched in the down position. Thislatch is tripped simultaneously withthe release of the opening springsand the solenoid plunger movesupward. A timing orifice in the bottoof the solenoid-plunger cylinder regulates the rate at which upwardmovement can take place as oil isdrawn into the cylinder.

As the solenoid plunger reachesthe top of its stroke, the high-voltage

line contactor energizes the closingsolenoid, pulling the plunger down.The closing solenoid contactoropens, de-energizing the coil and,through the mechanical linkage, themain contact-operating rods aresimultaneously moved upward toclose the contacts. At the same timethe opening springs are charged inpreparation for a tripping operation.

W, WV27, VW, and VWV27reclosers—which are rated through24.9 kV—are equipped with a high-voltage closing solenoid contactorwith two breaks in series. The higherated reclosers—WV38X andVWV38X—are equipped with a con-tactor with four breaks in series.

Control of the upward travel of theplunger regulates reclosing time.Normal reclosing time for the W-group reclosers is two seconds. Thefirst reclosing operation in the pro-grammed sequence can be 30 or 45cycles when the dual-reclosingaccessory is used.

280-3

Figure 5.Phase-to-phase connection of high-voltage closing solenoid.

TYPES W, WV27, VW, VW27, AND VWV27 RECLOSERS

Figure 6.High-voltage closing solenoid contactors.

TYPES WV38X AND VWV38X RECLOSERSWITH 30 kV, 33 kV OR 34.5 kV CLOSINGSOLENOID COIL

86729KMA

82012KMA

CLOSINGSOLENOIDFUSE

CLOSING SOLENOIDCONTACTOR

MAIN CONTACTS

OPERATING MECHANISM

CLOSING SOLENOID

TERMINAL BUSHING

SERIES TRIP COIL

ØC

ØB

SOURCE LOAD

ØA1 2

3 4

5 6



HYDRAULIC CONTROLSYSTEM OPERATIONThe number and sequence of opera-tions to lockout and time delay opera-tions are controlled by two separatehydraulic mechanisms which aremechanically linked.

Pump-and-Lockout-PistonAssemblyThe hydraulic pump, associatedcam, and linkages regulate the num-ber of fast and delayed operations,count the operations to lockout andinitiate lockout after a preset numberof operations.

The hydraulic pump (Figure 7) islinked to the closing solenoid plungerand is pushed downward with eachreturn operation of the plunger. With

its downward stroke, the pump forcesa measured amount of fluid under thelockout piston (Figure 7), causing it torise one step. Ball-type check valvesretain the charge. When the closingsolenoid is energized, the reclosercontacts close and the pump returnsto its normal position.

The lockout piston is linked to thesequence selector cam (Figure 8)and the lockout bar. Upward move-ment of the lockout piston causes thecam to rotate counterclockwise andthe lockout bar to advance one step.The number of fast operations are

preset on the cam. After these opera-tions the cam edge engages theroller and pushes it to the right. Amechanism arm attached to the rollerengages the time-delay mechanismon each phase. Subsequent opera-tions are then delayed.

When the lockout bar completes itstravel, it trips the lockout latchthrough another set of linkages andsprings lock the recloser contactsopen. The reset rod and valve (Figure7) are raised, releasing hydraulic fluidfrom beneath the lockout piston sothat it resets quickly. The entire pump

and sequencing mechanism are nowready for the next full sequence ofoperations.

For temporary faults that arecleared before the recloser mecha-nism reaches lockout, the lockout pis-ton resettles gradually (at a rate ofapproximately 90 seconds per opera-tion at 25˚C) to reset the reclosermechanism.

OPERATING SETTINGS

The required sequence of fast anddelayed operations and the requirednumber of operations to lockout arefactory set per customer specifica-tion. Either or both settings are easilychanged in the field; only partialuntanking of the recloser is neces-sary and no special tools are needed.

Internal settings for the number ofoperations to lockout permit therecloser to be programmed for two,three, or four trip operations to lock-out. Programming for one operationto lockout is done with the externalnon-reclosing handle located under

the sleet hood. The internal setting iseasily changed by moving the hori-zontal lockout bar (Figure 9) to indexthe lockout-setting pin in the requirednotch.

Moving the external non-reclosinghandle down activates the non-reclosing feature (one operation tolockout); this overrides the internalsetting but does not change it physi-cally. When the non-reclosing featureis deactivated (handle moved up),the number of operations to lockoutautomatically reverts to the internalsetting, providing complete flexibilityfor testing or service without disturb-ing the programmed operations-to-lockout setting.

10


Figure 7.Cross-section of hydraulic pump.

86717KMA



The timing of recloser trip opera-tions can be fast (which includes nointentional time delay), delayed(which follows one of four slowertime-current characteristics), or a

sequence of fast followed bydelayed. The recloser mechanism isprogrammed simply by setting thenumber of fast operations required ieach sequence of operations to lockout, by indexing a notched cam(Figure 8) to the required number. Itis easily changed by lifting the flatspring tab away from the cam androtating the cam until the desirednumber of fast operations is indicat-ed. The setting for the number of fasoperations determines the number odelayed operations in the sequencefor example, if four operations tolockout are selected and the cam isadjusted for two fast operations, thesequence will be two fast operationsfollowed by two delayed.

TIME DELAY MECHANISMDelayed operations in W-groupreclosers are established by thehydraulic time delay mechanism oneach phase. The time delay mecha-nism is engaged with time-currentcharacteristic. The selected curve isestablished by the time of engage-ment of the time delay mechanism.For the B and D curves, approxi-mately half of the stroke is unimped-ed, then the trip coil linkage engagethe time delay mechanism and theremainder of the stroke is impeded,establishing the desired curve. Withthe slower (C and E) curves, the timof engagement is earlier.

280-3

Figure 8.Recloser operating sequence is determined by the number of fast operations pro-grammed on the sequence selector cam. The number of delayed operations willbe the balance of operations to lockout. The setting on the sequence selectorcam is easily changed in the field.

Figure 9.The internal setting for the number of operations to lockout (two, three, or four) isachieved by positioning the lockout-setting pin in one of three notches in thelockout bar. This setting is easily changed in the field.

86716KMA

86715KMA



The time-delay mechanism permitsa choice of two characteristics: Band C or D and E. The desired char-acteristic must be specified becauseone mechanism does not provide all

four characteristics. Adjustment fromone characteristic to the other ismade by indexing a thumbscrew-and-bracket arrangement on thetime-delay mechanism to change thecurve by changing the time ofengagement (Figure 10).

Established DelayOperationsOperation of the time-delay mecha-nism is initiated by the integratingmechanism. As the indexing cam(Figure 8) is rotated counterclockwiseby the upward movement of the lock-

out piston, it engages a roller assem-bly, causing the solenoid linkageengagement arm to pivot clockwise,placing its hook above the pin on thetime-delay arm. When an overcurrentoccurs and the engagement armmoves downward with the trip coillinkage, the hook engages the pin onthe time delay arm and the timedelay mechanism impedes theremainder of the stroke.

OperationThe hydraulic time delay mechanismpiston (Figure 11) is pulled down-ward by the trip coil linkage. A float-ing plate (retained by an open bas-ket) at the bottom of the hollow pistonfunctions as a one-way valve on thedownstroke, sealing the bottom of thepiston.

On low-current operations, dis-placed oil is forced around thegrooved pin in the low-current valveand is allowed to return to the spaceabove the piston. When a higher cur-rent fault is interrupted, increased oilpressure raises the springloadedvalve so that oil flows through bothvalves and the tripping operation isaccelerated proportionately.

The hydraulic time delay mecha-nism has no effect on contact-open-ing speed—it only delays themoment at which the openingsprings are released.

12


Figure 10.Changing time-current characteristics to the alternate curve is accomplished byloosening the thumbscrew and indexing the adjustment bracket to the properhole.

Figure 11.Cross section of time delay unit.

86718KMA

86780KMA

TIMEDELAYARM

LOW-CURRENTTIMING VALVE

SPRING-LOADEDVALVE

GROOVEDPIN

PIN

PISTON

VALVE DISC

PERFORATEDBASKET



INTERRUPTERCONSTRUCTIONOil InterruptersFast arc interruption (down to 21 / 2

cycles clearing) is achieved bybridge-type contacts that provide twocurrent breaks in series per phase.The bayonet-type moving contactsare silver-plated tungsten alloy forerosion resistance and good conduc-tance. The stationary contact assem-blies are tulip-type clusters of silver-plated contact fingers held togetherby garter springs. The contacts areself-cleaned by the opening andclosing wiping action.

Each current break is provided witha self-generating arc interrupterstructure which includes a series ofvented chambers. As the contacts

open, the arc generates gas pres-sure in the upper chamber whichblasts oil across the arc and outthrough the vents. As a result, arcextinction is fast and arc energy lev-els do not increase as fast at thehigher fault-current levels.

Vacuum InterruptersVacuum interrupters provide fast,low-energy arc interruption with longcontact and interrupter life, lowmechanical stress, and maximum

operating safety. With arc interruptiontaking place in a vacuum, contactand interrupter life are several timesgreater than with interruption in oil,and interrupter maintenance is virtu-ally eliminated. Because of the short-er contact stroke, mechanical stressand wear on the mechanism is sub-stantially reduced.

Kyle vacuum interrupters aredesigned with a metal and ceramichousing for maximum strength andlong-term vacuum integrity. The high-alumina ceramic has more than fivetimes the strength of glass, permits ahigher processing temperature todevelop maximum purity of theassembly, and is impervious to heli-um penetration to sustain the vacuumlevel. Metal end-closures and thearcing chambers are of high-purityalloy to minimize contamination.

Enclosed in the interrupter is a stationary and a moving contact assembly. The moving contact has a travelof approximately 1 / 2 -in., its shaftpassing through a flexible bellows

which maintains vacuum integrity.Contacts are made of a special nonwelding alloy.

Because the smallest amount ofinternal contamination can signifi-cantly shorten the life of a vacuuminterrupter, a clean-room facility isused for interrupter production.Special care is taken to avoid evenminute contamination from anysource, whether it be dust particles,machining oils, or human body salts

ACCESSORIESW-group reclosers can be supple-

mented with a number of accessorieto provide added application flexibity. Some accessories modify the normal operating functions while othersincrease operating versatility; stillothers provide indicating functions.For each accessory installed on aparticular recloser, a data plate ismounted on the sleet hood of therecloser.

Where required, accessory leadsare brought into the recloser tankthrough a junction box mounted onthe head casting.

280-3

Figure 12.General construction of a typical self-generating interrupter used in oil inter-rupting reclosers.

Figure 13.General construction of a typical vacu-um interrupter used in vacuum inter-rupting reclosers.

86720KMA

86722KMA



Bushing-Type, Multi-RatioCurrent TransformersMulti-ratio current transformers foroperating meters or separate relayscan be mounted on load-side bush-ings 2, 4, and 6 or the source-sidebushings 1, 3, and 5 (Figure 14).These current transformers have onlyone primary turn—the bushing rod.They are available with secondarywindings that provide primary/sec-ondary-current ratios of either 600:5or 1200:5. Different ratios can beobtained by connection to appropri-ate taps on their secondary windings.

The ratios obtainable from 600:5and 1200:5 transformers are shownin Table 17.

Hydraulic Ground-TripAccessory

If the rated minimum zero-sequence(ground) current is exceeded, thehydraulic ground-trip mech-anism—an oil-dashpot-type solenoidconnected to paralleled BCT secon-daries—trips the recloser. Thehydraulic ground-trip mechanismaccessory enables the recloser toprotect against ground-fault currentslower than the recloser’s minimumphase-trip setting. For currentsabove the minimum phase-trip set-ting, recloser opening is governed byeither the phase-trip series coil or theground-trip coil, whichever is faster.

Refer to Reference Data R280-91-7for available delay curves.

The ground trip coil is operatedfrom the bushing-type, multi-ratiocurrent transformers mounted on thesource-side bushings (1, 3, and 5) toproduce the minimum ground-trip

currents shown in Table 18. The cur-rent transformers must be orderedseparately.

Electronic Ground-TripAccessorySelf-contained, independent, sensi-tive ground-fault tripping is also avail-able with an electronically controlledground-trip accessory that includesthe following: Fifteen fault timing characteristics

including inverse and definite-timecurves, or plug-in modules that areeasily field changed.

Dual-timing capability. Twelve minimum-trip levels, from 5

to 400 amps. Line powered; completely self-con-

tained. Precharging coil for consistent tim-

ings even when reclosing on a per-manent fault.Fault timing characteristics and tim-

ing operations are independent andseparate from the recloser’s phase

fault timing and TCC’s. Counting tolockout is integrated with phaseoperations. The dual-timing featureenables coordination with other pro-tective apparatus on the system.

Accessory control circuits are pow-ered from the line through two currenttransformers mounted under thehead casting on source-side bush-ings. Five amperes of line current isall that is required to maintain circuitcharge and supply the trip operation.

14


Figure 14.Multi-ratio current transformers mount-

ed on the source-side bushings.

TABLE 17Bushing-Type Multi-Ratio CurrentTransformer Ratios and TerminalConnection

TerminalRatio Ratio Connection

50:5 100:5 X2—X3100:5 200:5 X1—X2150:5 300:5 X1—X3200:5 400:5 X4—X5250:5 500:5 X3—X4300:5 600:5 X2—X4400:5 800:5 X1—X4

450:5 900:5 X3—X5500:5 1000:5 X2—X5600:5 1200:5 X1—X5

Figure 15.

Ground-trip coil mounted in recloser.

TABLE 18Ground-Trip Operating Data

Minimum Zero-SequenceTrip Current

(primary amps)BushingCurrent Series- Parallel-

Transformer Connected ConnectedRatio Coil Coil

50:5 N/A* N/A*100:5 63.5 110150:5 87 156200:5 110 204

250:5 133 250300:5 156 300400:5 204 400450:5 227 450500:5 250 500600:5 300 600

* Not applicable: BCT output too low to operatesolenoid.

86719KMA

82118KMA



Zero-sequence (ground) current issensed by three parallel-connectedcurrent-sensing transformers mount-ed beneath the head casting on theload-side bushings. When the

ground current exceeds the selectedminimum-trip level, the control cir-cuits actuate the magnetic tripper totrip the recloser. Ground overcurrenttiming is according to the time-cur-rent characteristics programmed withplug-in modules on the accessorycircuit board.

When the recloser automaticallyrecloses, or is otherwise closed byelectrical operation of its closingsolenoid, an initial arming featureinstantly charges the accessory con-trol circuits. This enable the ground-trip accessory to respond immediate-ly, according to its programmed time-current characteristic should aground fault be present.

If the system downline from therecloser is energized by other thanelectrical operation of the recloser(such as the closing of an uplinerecloser or breaker) control-circuitarming time must be added to thepublished time-current characteristicof immediate fault timing is occurring.Further information that can be usedin anticipating such circumstances isfound with the published time-currentcharacteristics on this accessory;refer to Cooper Power Systems

Reference Data R280-91-12.

Ground-Trip Blocking SwitchA ground-trip blocking switch can beprovided for either ground-trip acces-sory. The hookstick-operated block-ing switch (Figure 17) is normallymounted on the recloser. The manuallever-operated blocking switch(Figure 18) is for remote mounting.

280-3

Figure 16.Components of electronic ground-fault trip accessory.

Figure 17.Ground-trip blocking switch; hook-

stick-operated.

Figure 18.Ground-trip blocking switch for remot

manual operation.

86721K

86723K86724KMA



Remote TripWhen energized from an externalsource, the remote trip accessory(Figure 19) trips the recloser, just aswhen the series trip coil operates.

Normal automatic reclosing follows.Reclosing will occur even if thesolenoid remains energized. Shouldthis condition occur, the recloser willoperate to lockout. The remote tripaccessory leads are brought out ofthe recloser tank through a separate-ly specified accessory junction box.

Electrical ratings are shown inTable 19.NOTE: The remote trip accessory cannot beinstalled on a recloser equipped with aground-trip accessory (hydraulic or electronic)since both occupy the same space and oper-ate the same trip-lever mechanism.

Low-Voltage Dc ClosingBy specifying a dc-closing solenoidfrom Table 2 and this accessory, therecloser can be closed by an exter-nally controlled low-voltage dc power

source rather than from the primaryhigh-voltage source. A separatelyspecified accessory junction box withinput terminal block is also required.Low voltage is especially desirable inloop and load-transfer schemeswhere the recloser can be operatedregardless of which side of the unit isenergized. Current requirements fordc closing are 55 amps at 125 Vdc or58 amps at 48 Vdc.

Low-Voltage Ac ClosingWith the addition of a modified clos-ing contactor equipped with a full-

wave diode bridge (Figure 20), thedc closing solenoid can be operatedfrom a low-voltage ac source. Currentrequirements for ac closing are 51amps at 120 Vac or 34 amps at 240Vac.

Closing-Coil Contactor andTransfer SwitchThe closing-coil contactor and trans-fer switch accessory allows the high-

voltage closing solenoid to be ener-gized from either side of the recloser.This accessory consists of a mechan-ically operated combination DPSTclosing contactor and DPDT transferswitch, and is an alternative to thestandard closing solenoid contactorof the recloser. It mounts in the sameposition (Figure 21) and is operatedin a similar manner. No external cus-tomer connections are required tooperate the closing-coil contactor-and-transfer switch. This accessorycan only be used on 2.4-24.9 kV dis-tribution systems.

Auxiliary SwitchRemote indication of recloser contactposition or switching of other devicescan be accomplished with an auxil-iary switch. A three-stage switch ismounted on the recloser (Figure 22).Each stage has two independentcontacts a and/or b . When the reclos-er’s main contacts are open, the a contacts are also open and the b contacts are closed. Table 20 showsthe recloser/auxiliary switch contactrelationship.

Switch contacts are insulated for600 volts and have a continuous cur-rent rating of 10 amps. The interrupt-ing ratings of the auxiliary switch con-tacts are shown in Table 21.

16


Figure 19.Remote trip solenoid.

TABLE 19Electrical Ratings of Remote TripAccessory; Intermittent Duty Only

Steady-StateRated Operating Current at

Voltage Voltage Range Rated Voltage(Vac) (Vac) (amps)

120 95_125 1.3240 190_250 0.65

Figure 20.Low-voltage ac closing accessory.

Figure 21.Closing-coil contactor and transferswitch accessory; mounted in reclosermechanism in place of standard clos-ing solenoid contactor.

TABLE 20Recloser/Auxiliary Switch ContactPositions

When recloser contacts are closed:auxiliary switch contacts a are closed;auxiliary switch contacts b are open.

When recloser contacts are open:auxiliary switch contacts a are open;auxiliary switch contacts b are closed.

82281KMA

86725KMA

86725KMA



Lockout-Indicating SwitchA lockout-indicating switch assemblycan be added for remote indication ofrecloser lockout (Figure 23). Theswitch is particularly useful in load-

transfer schemes.Consisting of two single-pole, dou-ble-throw switches in a weatherproofhousing, the assembly is actuated bythe recloser’s manual operating lever.A threaded opening for a one-halfinch IPS conduit or cable grip is pro-vided.

Electrical ratings of the lockout-indi-cating switch are shown in Table 22.

Remote LockoutThe remote lockout accessory(Figure 24) enables an external con-trol to trip the recloser and operatethe lockout mechanism.

The remote lockout accessoryleads are brought out of the reclosertank through a separately specifiedaccessory junction box with terminalblock.

Electrical ratings of the remote lock-out accessory are shown in Table 23.NOTE: To provide complete remoteoperation, the remote lockout accessory isusually employed with the remote close acces-sory.

Remote Close

When energized from an externalsource, the remote close accessorycloses a locked-out recloser by maually pulling the operating handle tothe CLOSE position, actuating thehigh-voltage closing solenoid contator to close the recloser. The externcontrol circuit for this accessoryrequires a connection that includescustomer-furnished, normally open,momentary contact switch wired inseries with the solenoid.

Electrical ratings of the remoteclose of locked-out recloser access

ry are shown in Table 24.NOTE: When this accessory is added to arecloser, the recloser cannot lockout if theremote close accessory is held energized.

280-3

TABLE 21Interrupting Ratings of Auxiliary Switch

Volts Inductive Non-Inductive Inductive Non-Inductive(ac or dc) ac (amps) ac (amps) dc (amps) dc (amps)

24 – – 15 20

48 – – 7.5 10120 50 80 – –125 – – 1.5 2240 25 40 – –250 – – 0.45 0.5

Figure 22.Auxiliary Switch (with cover removed).

Figure 23.Lockout-indicating switch.

TABLE 22Electrical Ratings of Lockout-Indicating Switch Accessory

Interrupting Rating OperatingAmperes Voltage

10 120 Vac5 240 Vac0.5 125 Vdc0.25 250 Vdc

Figure 24.Remote lockout solenoid.

TABLE 23Electrical Ratings of Remote LockoutAccessory

Steady-StateRated Operating Current at

Voltage Voltage Range Rated Voltage(Vac) (Vac) (amps)

115 95-125 0.36230 190-250 0.18

Figure 25.Remote closing solenoid.

TABLE 24Electrical Ratings of Remote CloseAccessory

Current atRated Voltage

(amps)OperatingRated Voltage-

Voltage Range Steady(Vac) (Vac) Inrush State

115 100-125 32-34 3.25230 200-250 16-18 1.67

82279KMA

86727KMA

82117KMA

86728K



Remote Block of ClosingThe remote block of closing acces-sory enables remote control of closing(Figure 26). One type blocks closingwhen the solenoid is energized; the

other blocks closing when the sole-noid is de-energized.Electrical ratings of the remote block

of closing accessory are shown inTable 25.

Current MeteringCurrent meters (Figure 27) can be in-stalled on a recloser to monitor the de-mandon each phase of the circuit. Thisinformation is useful in load studies.

Meters are available with or withoutmaximum indicators.

18


TABLE 25Electrical Ratings of Remote Block of Closing Accessory

Rated Operating Steady-StateVoltage Voltage Range Current

(Vac) (Vac) (amps) Status

115 95-125 0.2Blocks when de-energized

230 190-250 0.1

115 95-125 0.2 Blocks when energized230 190-250 0.1

Figure 26.Remote block of closing solenoid.

Figure 27.Current ammeters, mounted in verticalmeter trough.

RATINGS AND SPECIFICATIONS

Types Type Type Type TypeDescription W and VW WV27 VWV27 VWV38X WV38X

Nominal system voltage (kV)................................................... 2.4-14.4 24.9 24.9 24.9-34.5 24.9-34.5Maximum rated voltage (kV).................................................... 15.5 27 27 38 38Rated impulse withstand

voltage (BIL) (kV crest)......................................................... 110 150 125* 150 17060-Hertz withstand voltage (kV rms)

Dry, one minute..................................................................... 50 60 60 70 70Wet, ten seconds.................................................................. 45 50 50 60 60

Rated maximum continuouscurrent (amps)......................................................................... 560 560 560 560 560Reclosing time (seconds)........................................................ 2 2 2 2 2Bushing creepage distance (in.)............................................. 115 / 8 261 / 2 261 / 2 261 / 2 261 / 2

TABLE 26Electrical Ratings

TABLE 27Definite Purpose Capacitor Switching Ratings

Description VW VWV27 VWV38X

Isolated Bank (amps rms)....................... 400 400 250Parallel Bank

Current (amps)...................................... 400 400 250Peak current (kA).................................. 20 20 20

Transient inrush frequency (Hz).............. 4240 4240 6800

82119KMA

83453KMA

* Can be increased to 150 kV BIL with an accessory.



280-3

TABLE 28Interrupting Ratings

Trip CoilRating Minimum VW WV38X VWV38X

WContinuous Trip 2.4- WV27 VWV27 24.9- 24.9-

Amps Amps @ 4.8 kV @ 14.4 kV 14.4 kV @ 24.9 kV @ 24.9 kV 34.5 kV 34.5 kV

5 10 300 300 300 300 300 300 30010 20 600 600 600 600 600 600 60015 30 900 900 900 900 900 900 90025 50 1500 1500 1500 1500 1500 1500 150035 70 2100 2100 2100 2100 2100 2100 210050 100 3000 3000 3000 3000 3000 3000 300070 140 4200 4200 4200 4200 4200 4200 4200

100 200 6000 6000 6000 6000 6000 6000 6000140 280 8400 8400 8400 8000 8400 8000 8400160 320 9600 9600 9600 8000 9600 8000 9600185 370 11100 10000 11100 8000 11100 8000 11100200 400 12000 10000 12000 8000 12000 8000 12000225 450 12000 10000 12000 8000 12000 8000 12000280 560 12000 10000 12000 8000 12000 8000 12000400 800 12000 10000 12000 8000 12000 8000 12000560 1120 12000 10000 12000 8000 12000 8000 12000

70X 100 3000 3000 3000 3000 3000 3000 3000100X 140 4200 4200 4200 4200 4200 4200 4200140X 200 6000 6000 6000 6000 6000 6000 6000160X 225 6750 6750 6750 6750 6750 6750 6750185X 260 7800 7800 7800 7800 7800 7800 7800225X 315 9450 9450 9450 8000 9450 8000 9450280X 450 12000 10000 12000 8000 12000 8000 12000400X 560 12000 10000 12000 8000 12000 8000 12000560X 750 12000 10000 12000 8000 12000 8000 12000

NOTE: Minimum-trip on "X" coils is approximately 140% of continuous ratings.

TABLE 29Duty Cycle

% of Number of MaximumInterrupting Unit Circuit

Type Rating Operations X/R Value

15-20 28 3W 45-55 20 7

90-100 10 14_______Total 58

15-20 28 4WV27 45-55 20 8

90-100 10 15_______Total 58

15-20 28 4WV38X 45-55 20 8

90-100 10 15_______Total 58

15-20 88 4VW 45-55 112 8

90-100 32 15________

Total 23215-20 88 4

VWV27 45-55 112 890-100 32 15________

Total 232

15-20 88 4VWV38X 45-55 112 8

90-100 32 15________Total 232




DIMENSIONS AND WEIGHTS

Recloser Without bushing current Dim A Dim B Dim C Dim D Dim E Dim F Dim G Dim H Dim I Dim J Dim K

Type transformer accessory (in.) (in.) (in.) (in.) (in.) (in.) (in.) (in.) (in.) (in.) (in.)W Standard 115 / 8-in. creepage or 415 / 8 111 / 8 31 / 8 131 / 8 363 / 4 423 / 8 171 / 8 461 / 8 113 / 8 131 / 2 265 / 8VW 17-in. extra-creepage bushings 437 / 8 111 / 8 31 / 8 131 / 8 363 / 4 423 / 8 171 / 8 461 / 8 113 / 8 131 / 2 287 / 8

WV27 473 / 4 117 / 8 41 / 8 131 / 8 363 / 4 423 / 8 171 / 8 461 / 8 113 / 8 131 / 2 265 / 8VWV27 Standard 261 / 2-in. 50 117 / 8 41 / 8 131 / 8 363 / 4 423 / 8 171 / 8 461 / 8 113 / 8 131 / 2 287 / 8WV38X creepage bushings 471 / 8 15 41 / 8 171 / 4 37 425 / 8 211 / 4 463 / 8 151 / 8 10 265 / 8VWV38X 493 / 8 15 41 / 8 171 / 4 37 425 / 8 211 / 4 463 / 8 151 / 8 10 287 / 8

Recloser With bushing current Dim A Dim B Dim C Dim D Dim E Dim F Dim G Dim H Dim I Dim J Dim KType transformer accessory (in.) (in.) (in.) (in.) (in.) (in.) (in.) (in.) (in.) (in.) (in.)

W Standard 115 / 8-in. creepage or 463 / 8 117 / 8 31 / 8 131 / 8 363 / 4 423 / 8 171 / 8 461 / 8 113 / 8 131 / 2 265 / 8VW 17-in. extra-creepage bushings 485 / 8 117 / 8 31 / 8 131 / 8 363 / 4 423 / 8 171 / 8 461 / 8 113 / 8 131 / 2 287 / 8

WV27 521 / 2 125 / 8 41 / 8 131 / 8 363 / 4 423 / 8 171 / 8 461 / 8 113 / 8 131 / 2 265 / 8VWV27 Standard 261 / 2-in. 543 / 4 125 / 8 41 / 8 131 / 8 363 / 4 423 / 8 171 / 8 461 / 8 113 / 8 131 / 2 287 / 8WV38X creepage bushings 513 / 4 157 / 8 41 / 8 171 / 4 37 425 / 8 211/

4 463 / 8 155 / 8 91 / 2 265 / 8

VWV38X 541 / 8 157 / 8 41 / 8 171 / 4 37 425 / 8 211 / 4 463 / 8 155 / 8 91 / 2 287 / 8

TABLE 30Overall Dimensions

Figure 28.Dimensions of W-group reclosers.

TABLE 31Weights and Oil Capacity

Recloser Weight With Oil CapacityType Oil*(lb) (gal)

W 785 38WV27 790 41

WV38X 1012 53VW 845 45

VWV27 845 45VWV38X 930 59

* Add 25 lb for each bushing current transformer.

G

H

I I J

K

E

F

D

A

C

B

TERMINAL CONNECTORS1/0—500 MCM

GRD CONNECTOR8 SOL—2/0 STR

TAPPED HOLES (12)for 1 / 2—13 BOLTS

2

1

4

3

65

SOURCE

11 / 2"

NOTE: For dimensions of reclosers withmountings, see Catalog 280-85.

P.O. Box 1640, Waukesha, WI 53187©1996 Cooper Power Systems Inc

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