Reclosers S280-40-4
Contents
1. 9 Closing 22 6 nei 11 Closing Solenoid Contactor 11 Closing Solenoid Fuses 12 ste oer ant aire UU 12 Removal of Head Casting 13 Mechanism Operation 15 Rating Changes Adjustments reete Operational Control Circuit 5 Bushing Current Transformers Replacement Instructions for Circuit 5 Service Parts List Interrupting Structure below Serial No 1001 Basic Recloser Parts Parts List for Mechanism Frame Assembly These instructions do not claim to cover all details or variations in the equipment procedure or process described nor to provide direction for meeting every possible contingency during installation operation or maintenance When additional information is desired to satisfy a problem not covered sufficiently for the user s purpose please contact your Cooper Power Systems sales engineer cooker Cooper Power Systems Quality from Cooper Industries Jan u2. rec PUT SUPERAR SPL GOO Figure BELEPTACLE RECEPTACLT S280 40 3 Page 17 BUSHING CURRENT TRANSFORMERS SHUNT RESISTORS 2 140 ampere phase trip resistors 2 4 kv closing solenoid For these combinations the sensing transformers are located an the load side of the recloser while the bat tery charging transformer is located on the center phase source side bushing AT oF i e Th of bonan 1 or M Ge COMTHOL c a 31 Internal wiring of Type WE recloser Terminals on recloser terminal strip are lettered right to left A through G Terminals on terminal strip in this diagram are lettered left to right A through G for explanatory purposes Pin N of the control cable receptacle is connected to terminal G of the terminal strip on the recloser frame to facilitate testing of mercury switches 2 3 f Transfer ohmmeter probes to sockets C and D Infinite ohms should be read indicating microswitch 1 is open circuited If not the mercury switch is faulty but should be rechecked before replacing NOTE Mercury switch and microswitch positions for combinations of control lever and recloser contact positions are tabulated on page 18 g Transfer ohmmeter probes to sockets F and A The ohmmeter should read infinite ohms If not mer cury switch 2 may be f
3. Sof Y 5 E Item No Description Machine screw 6 32NC2 x1 Ig rd hd brass Lockwasher 6 internal tooth bronze Switch hermetically sealed type 1HS3 with roller lever actuator Minneapolis Honeywell Machine screw 10 24NC2 x 3 4 lg rd hd stl cad Bracket Lockwasher 10 med stl cad Hex nut 10 24NC2 stl cad Hex nut 6 32NC2 brass cad Machine screw 6 32NC2 x 1 2 lg rd hd brass cad Cable clip Lead wire assembly Mercury switch Machine screw 8 32NC2 x 1 4 lg rd hd stl cad Machine screw 8 32NC2 x 5 8 lg rd hd stl cad Washer 10L plain brass Nylaclip HP 8N Burndy Machine screw 6 32NC2 x 5 8 lg fil hd stl cad 7 terminal board Grommet rubber Washer 105 plain brass cad PARTS LIST FOR TYPE RE RECLOSER Catalog Number KP681 KP826 KP497 KP186RE KP353 KP272 KP852 KP641 KP2006A8 KA62RE KP134RE KP500 KP669 KP560 KP2006A4 KP1043 KP882 KP2017A4 KP840 Machine screw 10 24NC2 x 16 Ig rd hd stl cad Spacer Link Groove pin Retaining ring WA514 Arm Spacer Lever Lever order with item 30 Pin order with item 29 Roll pin 3 32 X 1 2 Transfer shaft Roll pin and lever included in item 41 Lever Retaining ring WA510 Groove pin Link Hex nut 1 4 28NF2 stl cad Lockwasher 1 4 med Washer 145 plain brass cod Rotary solenoid assembly KP670 KP133RE KP128RE KP3124A3 KP75 KP1295R KP3009
4. LOCK WASHE 45 4 Install new solenoid by reversing above procedure Pass leads through nylon mounting strap and grommet in mechanism frame Connect leads in Figure 36 any order The trip solenoid is not polarity sensitive Properly installed trip solenoid Page 22 PARTS LIST FOR TYPE WE RECLOSER INTERRUPTING MECHANISM Units Below Serial No 1001 Item k a 12 Description Support Plate Spacer short Spacer long Cap screw 3 8 24 UNF2 x 6 SAE steel hex hd Flat washer 3 8 SAE steel Gasket Lock washer 3 8 med steel Hexnut 3 8 24 UNF2 steel Flat washer 5 16 SAE Elastic stop nut 5 16 24NF3 Moving contacts and yoke assembly Interrupter repair kit Catalog Number KP137W KP134W KP135W KP726 KP807 KP136W KP5S6 KP589 KP350 KP286 KA11W KA834W OLD STYLE PLATES TO BE REPLACED WITH KA834W ITEM 12 f ote ment 6 PLATES 4 PLATES 3 PLATES T PLATES 1 PLATES 2 PLATES PLATES kA PLATES Both stacks plus the base plate are shipped as complete assembly PARTS LIST FOR TYPE WE RECLOSER INTERRUPTING MECHANISM Units Below Serial No 1001 Item Catalog No Description Number 16b Contact tube assembly KA14W 16c Contact current exchange spring KA12W 16d Washer KP114W 16e Contact terminal nut KP112W 16f Spacer silver pl KP115W 16g Co
5. Reclosers below serial no 1001 Pull and turn the contact segments to remove them Figure 10 shows the contact assembly completely dismantled 7 To reassemble stationary contacts arrange the six segments so they are hooked to the slotted head of the contact stud Use a rubber band to hold them in place while installing springs Slip the steel spring on followed in order by a spacer ring copper alloy spring spacer ring and the second copper alloy spring Insert segments in the contact receptacle figure 11 by twisting and pushing Replace the contact recep tacle in the fiber tube Position the washer on the opposite end and secure the entire assembly with the terminal nut Use the large screwdriver to hold the contact stud while tightening the large terminal nut aoe _ u E Bi 1 E HUT Mes SHER FIBER TURE Figure 11 Assembling stationary contact Reclosers below serial no 1001 mee STUD Figure 12 Dimensions of sleeve for installing steel spring on stationary contact assembly on reclosers below serial no 1001 NOTE Installation of the steel spring on each station ary contact assembly can be simplified by the use of a tapered wooden sleeve easily made in any woodworking shop Turn and drill a piece dimensioned as shown in the sketch of figure 12 Slip the sleeve over the end of the heavy screw and r
6. a All measurements are made from the pin sockets of the control cable receptacle b Connect ohmmeter probes to sockets A and B The ohmmeter should read approximately 9 5 ohms If not difficulty may be present in the trip solenoid NOTE Readings within 15 percent of suggest ed readings are sufficient to indicate components are trouble free c Transfer ohmmeter probes to sockets E and F Reading of 19 ohms indicates rotary solenoid should be trouble free d Insert ohmmeter common probe into socket K Insert the positive probe into sockets G H then J All three readings should be 7 ohms If not corresponding sensing current transformer may be faulty Check bushing CT s for ratio and polari ty as described in the test procedure on page 19 e With ohmmeter common probe still inserted in socket K insert positive probe into socket L ohmmeter should read 1000 ohms If a reading of zero ohms is obtained the 0 2 MFD capacitor may be short circuited Readings deviating from 1000 ohms outside a 20 percent tolerance indi cate damaged resistor or transformer winding Figure 30 View of fault sensing bushing current transformers located on source side of recloser Battery charging current transformer is located on center phase load side except far these combinations 1 100 ampere phase trip resistors 2 4 kv or 4 16 kv to 4 8 kv closing solenoids BELEFTALLE Conn s CARTES cE
7. stl cad KP670 1 87 Roll pin 1 8 X 1 1 4 19 order KP520 119 Hex nut 10 24NC2 stl cad KP272 1 only with items 86 88 and 89 1 120 Lockwasher 10 med stl cad KP353 1 88 Toggle driver order only with 121 Spring reset lever KP172R 1 items 86 87 and 89 KP1329R 1 122 Lever reset trip KP171R 1 89 Roll pin 7 32 X 1 1 4 10 order 123 Retaining ring WA518 only with items 86 87 and 88 KP512 2 Type C KP79 5 90 Machine screw 10 32NF2 x 124 Spacer KP3009A17 2 1 1 2 lg rd hd stl cad KP630 125 Contact and trip arm assembly KA360R 1 91 Switch driver KP148R 126 Contact and counter arm 92 Machine screw 1 4 20NC2 x assembly KA359R 1 1 1 4 lg rd hd stl cad KP479 2 127 Spacer KP3009A16 1 93 Lockwasher 1 4 med KP337 4 128 Spacer KP3007A8 3 94 Spacer KP3007A15 2 129 Counter link KP183R 1 95 Switch toggle assembly KA428R 1 130 Retaining ring WA514 Type C KP75 10 96 Spacer KP3006A4 1 131 Contact lever and shaft 97 Stop nut elastic 10 32NF 2 KP2020A1 1 assembly KA318R 1 98 Spacer KP3015A2 1 132 Bearing shaft KP1055R 1 99 Spacer KP3015A3 1 133 Spring KP1180R 1 100 Stop nut 5 16 24NF 3 elastic KP2020A2 1 134 Washer 145 plain brass cad KP811 4 101 Reset lever KP166R 1 135 Roll pin 3 32 X 1 2 KP504 3 102 Reset lever KP164R 1 136 Groove pin KP3125A5 1 103 Spacer KP3011A4 1 137 Washer flat 5 16 SAE brz irr KP1120 13 104 Reset arm and pin assembly KA17R 1 138 Contact bar assembly KA13R 1 105 Washer 3 4
8. 40 4 Page 7 SHOP MAINTENANCE When shop maintenance or repairs are to be performed remove the ten bolts that secure the head casting to the tank With suitable hoist raise the recloser mechanism out of the oil and allow it to drain The recloser can be left suspended by the hoist inverted and placed on a workbench or the mechanism frame ends can be sup ported by a special rack ARC INTERRUPTING ASSEMBLY Reclosers below Serial No 1001 After the Type WE recloser has operated through a complete duty cycle the arc interrupter assembly should be completely dismantled and any worn parts replaced 1 Using a 1 2 inch thin wall socket remove selflocking hexnut that secures the contact yoke to the lift rod figure 8 Gently tap contact arm to remove contacts from the lift rod Pin in the rod must be aligned with a slot in the contact yoke 2 Disconnect the heavy braided lead from the top of each stationary contact assembly 3 Remove hexnuts flat washers and lock washers from the bottom of interrupter assembly FLEXIBLE BRAIDED EAD LEAD SLEEVE PRAT STATICHARY CONTACT ASSEMBLY SUPPORT PLATE SPACER TUBE ARC ASSEMBLY SEIHPORCING RAE CONTACTS CONTACT TOKE Figure 8 Exhaust side of interrupter housing Note position of reinforcing plates Reclosers below serial no 1001 Page 8 SHOP MAINTENANC
9. F from step 2c through completion of testing FEET ie Figure 32 Test circuit for checking bushing current transformers Ratio and polarity test circuits shown are the effec tive circuits that contribute to the testing Components not having an effect on the current flow are not shown Dotted lines in the polarity test circuit are test leads 3 Recloser contacts closed and manual control lever up a With 25 volt d c source connected across sock ets E and F close the main recloser contacts with the KA9OR closing tool as described on page 6 ohmmeter connected across B and C phases should show loss of continuity indicat ing that closing solenoid contactor is open b Transfer ohmmeter probes to terminals C and D Zero ohms indicates that microswitch 1 is oper ative and closed Remove KA9OR closing tool and ohmmeter leads from receptacle sockets c Trip recloser by applying 25 volts d c across socket A positive and socket B negative If recloser contacts do not trip open trip solenoid may be inoperative CAUTION Recloser should be tripped in oil to avoid damage to the dashpot in the arc interrupting mechanisms TABLE 2 Manual Recloser Control Micro Mercury Mercury Contacts Lever switch 1 Switch 2 Switch OPEN DOWN OPEN OPEN CLOSED OPEN UP OPEN CLOSED CLOSED CLOSED UP CLOSED CLOSED OPEN BUSHING CURRENT TRANSFORMER TESTS The sens
10. Refer to figure 23 Disconnect leads from terminals A and G and proceed as follows Loosen two screws that secure nylon mounting straps to lever pinned to main reclosing shaft 2 Slip mercury switch from mounting straps when screws are loosened sufficiently 3 Be sure to replace mercury switch so that lead wires are furthest from the rotary solenoid If the end without lead wires is not nearest the rotary solenoid improper operation of the recloser mechanism will result Page 20 OPERATIONAL CHECKS CONT D Remove Head Casting for Remaining Components To replace the following components trip solenoid microswitch 1 mercury switch 2 and rotary solenoid the recloser mechanism must be removed from the head casting as described on page 13 Mercury Switch 2 Refer to figure 33 and install new switch as follows 1 Disconnect the leads of the mercury switch from the terminal strip terminals F and G 2 Remove the four nylon mounting straps that secure the sleeving to the recloser frame 3 Remove the faulty switch from its mounting straps With an offset screwdriver loosen the screws that secure the nylon straps to manual lockout shaft lever to allow removal of switch 2 4 Pull the leads through the protective sleeving Thread the leads of the new mercury switch through the sleeving Thread both leads at the same time Leads can be secured to a long wire which can draw the mercury switch leads through the slee
11. cm min Dielectric 2 2 Dielectric strength 26 000 volts min Weight per gallon eese 7 5 lb Water content 40 parts million max Fischer test Servicing Locations Vary with Amount of Maintenance Routine inspection minor maintenance most adjust ments and replacement of oil can be performed on a recloser without removing it from the mounting frame Repairs or major maintenance work should be per formed in the shop PERIODIC FIELD INSPECTION AND MAINTENANCE Each periodic check should include at least the follow ing steps 1 BYPASS TRIP AND DE ENERGIZE THE RECLOSER Disconnect the control cable from the recloser 2 INSPECT EXTERNAL COMPONENTS Check for broken bushings paint scratches or other mechanical damage 3 LOWER THE TANK TO EXPOSE INTERNAL COM PONENTS Attach sheaves of the tank hoisting mechanism to recloser tank and take up slack Then remove the ten bolts to release the tank from the head casting CAUTION Be sure the recloser is tripped before lowering the tank so the recloser will not be tripped accidentally while the mechanism is out of oil 4 INSPECT MOVING CONTACTS Arcing tips of the moving contacts can experience considerable erosion before replacement is neces sary The contacts should be replaced before their effectiveness is impaired by erosion of
12. per bushing KA20W Insulating sleeve KP141W Interrupter frame assem for phases A and B KA8W Interrupter frame assem for phase C KA9W Page 24 PARTS LIST FOR TYPE WE RECLOSER 5280 40 4 Page 25 PARTS LIST FOR TYPE WE RECLOSER Quantity Quantity Catalog Per Item Catalog Per No Description Number Recloser No Description Number Recloser 1A Terminal assembly No 1 0 solid 39 Groove pin KP3123A3 1 through 500 MCM KA17W 6 40 Shaft and lever assembly KA319R 1 1B Threaded terminal stud 1 1 8 41 Spacer KP3007A8 1 12 x 2 1 8 tin plated KP158W 6 42 Shaft bearing included with 2 Bushing terminal gasket KP120L 6 item 24 KP1055R 1 3 Porcelain bushing standard KP1110R 6 43 Washer 9 16 X 260 x 040 Porcelain bushing standard brass KP399 1 for use with BCT KP171W 6 44 pin 3 32 X 1 2 brass KP302 1 Porcelain bushing 17 45 Roll pin 3 32 X 1 2 KP504 1 creepage distance KP1578R 6 46 Roll pin 1 8 X 3 4 KP502 1 Porcelain bushing 17 creep 47 Link KP137RE 1 age distance for use with BCT KP186W 6 48 Sleet hood cover plate KP283R 1 4 Conductor rod KP131W1 6 49 Self tapping screw No 12 x Conductor rod for use with BCT KP131W2 6 1 2 sstl KP50 5 5 Roll pin 1 8 X 15 16 Ig 50 Serial number nameplate KP190RE 1 6 Washer KP130W 6 51 Voltoge rating nameplate add 7 2000 8 6 correct number KP567R 1 8 Lifting eyebolt KP1104R 2 1 2 4 kv 2 4 16 to 4 8 kv 9 Palnu
13. six contact segments around the screw and retainer Each of the six teeth on the retainer should fit into a hole on a contact segment Place the garter spring contact springs and spring spacers over the small end of the assembly in the following order garter spring spring spacer contact spring spring spacer and contact spring Insert this assembly into the contact cup by twisting in clockwise Then push the cup and contacts into the large end of the tube Insert the retaining washer and contact nut from the opposite end Use the large screwdriver to hold the fillister head cap screw while the contact nut is tight ened CONTACT ag T Bilhika B0 MwavE CCMSACT C COHrAEF few kon CONTACT m 1 4 Gace S gt E SACER t darin ELITS Figure 16 Stationary contact assembly components Reclosers above serial no 1000 8 Replace the fiber plates in the arc interruption assembly if necessary Refer to periodic mainte nance page 6 for the method of determining when these plates should be replaced 9 Examine the insulating support stringers for evi 10 dence of tracking or moisture absorption Failure of these members is rare but if any show track ing replace as follows a Disconnect the lead attached to the series trip solenoid coil tube b Remove the hex nuts lock washers an
14. spring and snaps the toggle closed This motion of the reset lever also pulls the plunger out of the closing coil At this point the contacts are completely open The closing coil is energized by a signal to the rotary solenoid on the side of the mechanism The solenoid closes the closing solenoid contactor which energizes the coil The plunger is drawn into the coil and the reset lever is pulled back figure 28 to its original posi tion at the same time closing the contacts The mech anism is then ready for another cycle RATING CHANGES Type WE reclosers continuous current rating and minimum trip values can be changed in the field as described in the control installation manual Closing solenoid coils are available for eight voltage ranges from 2 4 to 14 4 kv Two d c coils rated at 125 and 250 volts dc also are available for use on the Type WE When the closing solenoid coil is changed as described on page 11 the protective fuses may also require replacement Two fuses are shipped with each replacement coil Fuse and coil data are given on page 12 ADJUSTMENTS Refer to the control installation manual bulletin 281 27SA 1 for information about operations to lockout reclosing time phase trip sequence minimum trip values resetting time ground trip sequence phase trip timing and ground trip timing 5280 40 4 Page 15 CONTACT LIFT PD CONWECTS HERE Figure 25 Contacts cl osed OPEM HALF EXTE
15. that secure the 0 2 MFD capacitor to the load side of the recloser frame Page 14 SHOP MAINTENANCE CONT D SICROSWITCH 1 TERIAL STRIP MERCURY TWITCH 2 Figure 23 Terminal strip attached to recloser frame Disconnect the seven leads connected to the lower terminal strip of the terminal block attached to the recloser frame figure 23 Be sure to label these seven leads corresponding to the terminals from which they are disconnected Terminals are lettered A through G right to left Remove the screw that secures the nylon leadstrap to the frame above the terminal block 6 Remove the six 1 2 x 4 1 2 hexsocket head bolts that secure the frame to the head casting Be sure the recloser mechanism is supported from below before these bolts are removed Six tubular spacers and lock washers will be released when the bolts are removed and the head is lifted from the recloser mechanism frame Figure 24 shows head casting and associated components removed from the mechanism frame 7 To reassemble carefully lower head casting in place with the six tubular spacers placed on the lugs Start the six 1 2 bolts and tighten evenly to avoid any binding of the mechanism Engage the contact indicator and lockout lever Reconnect the operating lever of the auxiliary switch if used Attach 0 2 MFD capacitor to the recloser frame Reconnect bushing leads Be sure bushing leads are positio
16. use only resin core solder M E will assume no responsibility for components having leads connected by means of acid core solder 0 2 MFD Capacitor Label lead connections to the capacitor and proceed as fol lows 1 Heat solder joints to disconnect leads 2 Remove two screws that secure capacitor to recloser frame 3 Replace by reversing above procedure Be sure to reconnect leads to proper capacitor terminals Battery Charging Current Transformer Label lead connections to the current transformer and shunting resistor Then proceed as follows 1 With diagonal cutters clip the leads close to the current transformer 2 Disconnect the flexible bushing lead 3 Remove the two screws that secure the current trans former to the head casting Bushing CT is now free to be removed 4 Replace current transformer by reversing the above procedure Be sure to use spacers between the trans former mounting supports Replacement transformers are equipped with six inch leads which can be trimmed as required When splicing connections be sure the proper leads are connected before soldering Be sure to wrap all splices with electrical tape and observe sol dering precautions recommended above Sensing Bushing Current Transformers Replacement of phase A phase B and phase C current transformers is identical These transformers are installed as described above under battery charging transformer instructions Mercury Switch 3
17. 07W 6 138 Washer retaining KP515RV2 6 139 Fiber tube includes retaining ring KP512RV 6 140 Contact cup KP206W 6 141 Contact spring KP117W 12 142 Spring spacer KP210W 12 143 Garter spring KP209W 6 144 Contact arm assembly KA124W 36 145 Contact retainer KP211W 6 146 screw fil hds 3 8 24UNF 2x 1 14 KP1069 6 147 Gasket KP136W 6 148 Plate KP1293M 24 149 Plate KP213W 12 150 Plate KP1294M 48 151 Plate KP523RV 36 152 Interrupter Kit Includes two stacks of plates items 148 151 and one bottom plate item 131 KA836W 3 153 Closing coil fuse assembly also included with item 89 KA259R 1 Add number to indicate voltage rating 1 4 16 ta 4 8 kv and 6 0 kv color band black 2 7 2 ta 8 32 kv and 11 0 kv color band yellow 3 12 0 to 14 4 kv color band one red 4 2 4 color band two red 154 Fuse wire jumper assembly KA28W1 1 155 Fuse bracket included with Item 153 KP714R d 156 Fuse terminal bracket KP257L 1 157 Machine screw 1 4 20UNC2 x 1 2 brass rd hd KP473 4 158 Washer 14L plain brass KP818 4 159 Lockwasher 1 4 med phos KP347 4 brz 160 Machine screw nut 1 4 20UNC2 brass hex KP274 4 161 Machine bolt 3 8 24UNF2 x 7 8 KP729 6 silver bronze hex hd 162 Lock washer 3 8 x 0 141 x KP326 6 0 094 phos brz 163 Washer 7 8 x 25 64 x 0 064 KP986 6 brass 164 Roll pin 1 8 x 13 16 KP506 3 Page 28 PARTS LIST FOR MECHANISM FRAME ASSEMBLY
18. A9 KP130RE KP118RE KP119RE KP504 KP152RE KP117RE KP72 KP3123A4 KP126RE KP290 KP337 KP811 KA12RE Quantity Per Recloser BRO URON NI ioci oci ltem No 42 43 44 46 47 49A 49B 50 51 52 53 54 69B 70A 70B 71 72 73 74 75 76 77 Description Spring counterbalance Cotter pin 3 32 X 1 Ig brass Spacer Roll pin 1 8 X 3 4 Washer flat 5 16 SAE stl cad Spring Retaining ring WA516 Handle shaft assembly used with items 69A and 70A Handle shaft assembly used with items 69B and 70B Self tapping screw 6 32NC2 1 2 19 Type F Washer 6L plain brass Mercury switch subassembly Machine screw 8 32NC2 x 5 8 19 rd hd brass cad Lockwasher 8 med phos bronze cad Hex nut 8 32NC2 steel cad Pin reset lever Spring Spacer Spacer Pin spring anchor Trip lever assembly Spring bell crank Shaft spring anchor Link Spring Spacer Washer 145 plain brass cad Auxiliary switch bar assembly Trip latch lever used with items 49A and 70A Trip latch lever alternate used with items 49B and 70B Shaft used with items 49A and 69A Shaft alternate used with items 49B and 69B Spacer Solenoid trip assembly The solenoid may be ordered sepa rately as part na KP182RE Flat washer 1 4 SAE stl cad Cap screw 1 4 20NC2 x 1 2 19 hex hd stl cad Hex nu
19. E CONT D A LI cS ES gt i FIBER PLATES i r 4 ARC IMNTERGSLIP TION 1 Vek 4 ASSEMBLY H 1 i we abe FIBER i LUE TLIBE SUPPOR T PLATE x um EL REINFORCING BAR p PiEgnHAUST SIDR MLY 7 uova A DW AC CONTACTS 1 re Figure 9 Components of arc interrupter assembly Reclosers below serial no 1001 4 Slide the arc interrupter assembly downward Figure 9 shows the individual parts in the order of removal 5 Examine the stationary contact segments to deter mine if arc erosion has spread to the load contact surfaces If so replace the entire stationary con tact assembly or where erosion is less severe the contact segments only 6 Clamp the large end of the fiber tube in a smooth jaw vise Apply sufficient pressure to deform the tube slightly to create a hold on the contact recep tacle With an adjustable wrench turn the large terminal nut counterclockwise to loosen it from the opposite end of the stationary contact assembly Engage a large screwdriver in the slotted contact stud located inside the contact assembly The large terminal nut can now be removed completely CONTACT COHTACT MUT SPACER RECEPTACLE CONTACT SEGMENTS COPRER ALLOY SPACES IMS STEEL SPARING FIGURE 11 Figure 10 Components of stationary contact assembly
20. IH 7 210 8 32 and 11 0 KA259R 2 Yellow 3 4 12 0 to 14 4 KA259R 3 Red 2 ven L Two fuses are required to protect the distribution system from closing coil failure CLOSING EN ODE de rina 1 FUSE LEAD CLOSING SOLENDID LEADS Figure 18 Releasing contact operating rod of closing solenoid contactor from toggle mechanism 2 Remove three C rings to release pin that con nects the operating link to the toggle mecha nism figure 18 Two C rings are between the operating link and toggle mechanism The third is located on the outer end of the pin 3 With a long nose pliers release the springs between the operating link and toggle from the pin Then push pin through toggle mechanism and operating link 4 Remove the three hexhead cap screws that secure Figure 19 the contactor to the underside of the recloser Fuse time current characteristics for protection of frame Contactor is now free to be removed closing solenoid 5 Replace the contactor by reversing the above proce BUSHINGS dure Use new C rings on toggle mechanism pin Be sure closing solenoid and fuse leads clear insu Maintenance of bushings is generally limited to an occa lating supports and grounded parts by at least 1 2 sional cleaning However if a bushing should become inch cracked or broken replace it as follows CAUTION Fuse leads must be connected to upper 1 Remove hexnut lock washer and flat wa
21. NDED NS es i mh SVP RAT ALM Miik Figure 26 Contacts open halfway OPENING SPRINGS amps TRETCHED Figure 27 Figure 28 Cantacts reclosed Page 16 ADJUSTMENTS CONT D CONTROL LEVER OVERTRAVEL ADJUSTMENT Check for proper adjustment of the control lever by first removing the sleet hood cover to expose the con trol lever From the OPEN position slowly push the control lever toward the CLOSED position As the lever is pushed up latching of the recloser will be felt At this point dimension a of figure 29 should be 1 4 inch If the control lever is not adjusted properly open the C ring and remove it with diagonal cutters Then slide the control lever from the shaft Rotate the control lever clockwise to reduce dimension a or counter clockwise to increase dimension a Reassemble by reversing the procedure when the correct clearance has been set OPTIMUM DISTANCE 2a i 5 D CONTROL RING LEVER Figure 29 Overtravel adjustment of manual lockout lever OPERATIONAL CHECKS Circuit components attached to the recloser cover frame and operating mechanism require no mainte nance and should provide trouble free operation However if the Type WE recloser fails to operate prop erly perform these steps 1 check out the control cable for continuity between ends 2 test the circuit components associated with the recloser mechanism as described
22. Reclosers Type WE Three Phase Maintenance Instructions Service Information 280 40 4 Page 1 14 4 kv e 560 Amp This manual bulletin S280 40 1 for the Form 2 Type WE electronically controlled reclosers above serial No 299 cov ers maintenance of the interrupting mechanism operational checks for circuit components attached to the head casting and mechanism frame testing of the control cable and bushing current transformers replacement of mechanical and electrical co ponents replacement parts for the interrupting unit A separate manual bulletin 281 27SB 1 is a service manu al which covers the electronic control and provides informa tion on general inspection operational checks and battery testing and charging Procedures for testing the recloser and control together are found in the control installation manual bulletin S280 65 1 Replaces 281 355B 1 dated 9 65 No change in text CAUTION DO NOT ENERGIZE THIS EQUIPMENT OUT OF OIL ORDER OF CONTENTS Page GUCTIO Ms 1 Description of Type WE Recloser 2 General Maintenance Information 2 Periodic Field Inspection and Maintenance 4 Shop Maintenance pp 7 Arc Interrupting Assembly Serial No below 1001 7 Arc Interrupting Assembly above Serial No 1000
23. X 0 375 x 0 031 139 Contact bar KP290R 1 thk brass cad optional 1 140 Pin KP3125A9 1 106 Bolt KP346R 1 141 Washer flat 5 16 AN stl zn pi KP833 8 107 Cam KP187RE 1 142 Contact opening spring KP173R 2 108 Roll pin 1 8 X 1 Ig KP518 1 143 Spacer KP3011A34 2 109 Washer KP2028A4 1 144 Washer flat 3 8 SAE stl cad KP547 1 110 Retaining ring 5133 62 145 Spring anchor shaft KP284R 1 Type E KP87 1 146 Frame operating mechanism KP189RE 1 Cooper Power Systems Quality from Cooper Industries
24. ansformers in parallel so that total output current measured at points K and J should be 300 ma 2 Energize a c test current Check for 300 ma reading at sockets K and J Results can indicate either a all three bushing current transformers have the same polarity 300 ma reading or b one bushing current transformer has polarity opposite remaining two 100 ma reading Should one transformer possess opposite polarity be sure to refer to the circuit of fig ure 31 as a guide during further trouble shooting 3 De energize a c test current and remove jumper wires from receptacle sockets Output Test for Battery charging Current Transformer 1 Energize 100 ampere a c test current 2 Measure current at sockets K and L of receptacle Value should fall between 40 and 60 milliamperes 3 Readings within this range indicate sufficient current to maintain the control battery at the optimum volt age level REPLACEMENT INSTRUCTIONS FOR CIRCUIT COMPONENTS All circuit components associated with the recloser frame head casting and operating mechanism except the trip solenoid rotary solenoid microswitch 1 and mercury switch 2 can be replaced without detaching the recloser mechanism from the head casting Instructions for replacing bushing CT s mercury switch 3 end the O 2 MFD capacitor are given first 5280 40 4 Page 19 A 100 watt soldering iron will meet all requirements for repair work When resoldering lead connections
25. ary 1970 Page 2 DESCRIPTION OF TYPE WE RECLOSER The Type WE recloser on cover is a self controlled device that protects distribution lines and equipment This unit consists of a circuit interrupting device here after referred to as the recloser an electronic control and a connecting cable Fault current sensing is achieved by the control which actuates the recloser Circuit interruption is provided by the recloser A Type WE recloser performs similarly to other reclosers in that it trips and automatically recloses If a fault is temporary reclosing of the Type WE restores normal service If the fault is permanent the recloser senses this by performing a preset number of opera tions and locking open All three phases of a Type WE recloser open and lock out simultaneously Opening sequences of the recloser can be all fast all delayed or any combination of fast followed by delayed operations up to a total of four Fast opera tions clear temporary faults before branch line fuses can be damaged Delayed openings allow time for fuses to clear so permanent fault s can be confined to smaller sections of line Arcs are extinguished in the rugged arc interrupter assemblies figure 1 which utilize the proven selfblast principle of arc interruption Moving contacts are driv en by powerful opening springs that are loaded when the recloser is closed Closing is accomplished when a line voltage solenoid is connected across two phas
26. aulty Individual checks on mercury switches 2 and 3 can be made by means of pin sockets N F and A 2 Recloser contacts open and manual control lever up a Repeat step f under condition 1 Microswitch 1 should still be open Page 18 OPERATIONAL CHECKS CONT D b Transfer ohmmeter leads to sockets F and A ohmmeter should indicate closed circuit show ing that mercury switch 3 has remained closed Mercury switch 2 should be closed c Remove ohmmeter probes from terminals F and A Connect positive lead of the battery or 25 volt station d c source to socket F Momentarily connect the negative lead to sock et E Rotary solenoid should operate producing an easily distinguished sound Repeat two or three times Connect ohm meter across source side B and C phases see figure 32 for identification of phases The ohmmeter should show closing coil continuity effective d c resis tance of coil when rotary solenoid is ener gized Disconnect d c source NOTE To check for d c closing coil continuity read value across d c terminals in junction box CAUTION If the control battery is used as the 25 volt d c test source the battery should be connected only as long as is necessary for testing purposes Lengthy connection across the rotary solenoid will create an excessive drain of energy from the battery although it has no effect on the solenoid itself If a station d c source is used it can remain connected to sockets E and
27. below and 3 check the electronic control as described in the electronic control Service Manual Bulletin No 281 27SB 1 The Type WE should be checked out in this order An ohmmeter voltmeter such as the Triplet Model M30 which was used as a reference for the following tests is the only equipment necessary for steps 1 and 2 CONTROL CABLE Remove the recloser from service as described on page 4 if not already disconnected Then detach the control cable from the receptacles on the recloser cover and underside of the electronic control housing With the ohmmeter check for continuity between cable pins and pin sockets Pins and pin sockets are identified on each cable end A zero reading indicates continuity an infinite reading indicates an open circuit If an open circuit is discov ered the cable can be reinstalled after the open circuit ed lead is repaired or replaced Continuity between unlike pins or sockets indicates a short circuit Pins and sockets of the control cable designated N and P are not used CIRCUIT COMPONENTS Refer to figures 23 30 31 32 33 and 36 for identifica tion of microswitch 1 mercury switches 2 and 3 rotary solenoid trip solenoid bushing current transformers terminal strip and the configuration of pinsockets of the control cable receptacle on the head casting The com ponents are checked out under the three following con ditions 1 Recloser contacts open and manual control lever down
28. contactor figure 17 Remove four capscrews on the bottom of the sole noid frame and lower the coil and base plate Lift the coil from the base plate 5280 40 4 Page 11 INSULATING SUPPORTS CLOSING SOUINGIG i BASE PLATE GASKET Figure 17 Removing closing solenoid coil Examine the insulating supports for evidence of tracking or moisture absorption Replace any defec tive members as follows Remove the hexnuts lock washers and flat washers that secure the solenoid frame to the supports Then lower the solenoid frame slowly to avoid damaging the closing plunger Loosen defective supports with pliers and remove Install new members as required and reassemble Install the closing solenoid Be sure to use a new gasket between the coil and solenoid base plate Also see that solenoid leads clear insulating sup ports and the solenoid frame by at least 1 2 inch CLOSING SOLENOID CONTACTOR If the double break contacts of the closing solenoid con tactor require replacement install an entire new closing solenoid contactor as follows 1 Disconnect closing solenoid and fuse leads from contactor Page 12 SHOP MAINTENANCE CONT D TABLE 1 Closing Solenoid Fuse TCC Phase to Phase Catalog Color Number RINGS n Voltage kv Number Band See figure 19 TOGGLE I 2 4 33 KA259R 4 Two Red 6 58 4 16 to 4 8 and 6 0 KA259R 1 Black 5 P
29. d flat washers that secure the phenolic contact sup port plate to the stringers NOTE When this plate is lowered the series trip solenoid plunger will slide out c Loosen the stringers with pliers and remove d Install new members as required and reassem ble Refer to figure 15 and reassemble the interrupter in the following order a Place the fiber plates in two stacks on top of the bottom plate in the order shown in figure 15 Make sure that the gasket is included The exhaust ports open to the outside of the assembly b Drop the long spacer tubes into the corner holes of the two stacks The lower end of each spacer tube should be flush with the lower sur face of the bottom plate Place the short spac er tubes over the portions of the long spacer tubes which protrude from the stacks c Position the stationary contact assemblies on top of the two stacks d Place the assembly in position on the contact frame and secure it with the eight mounting bolts Reconnect the leads to the contact nuts e Install the moving contacts on the lift rod NOTE No clearance adjustment between moving contact and interrupter necessary for new style interrupters furnished for service CLOSING SOLENOID Little maintenance is required for the closing solenoid However if the recloser is to be operated at another voltage replace the solenoid coil as follows 1 2 Disconnect the two coil leads from the closing solenoid
30. echanism frame assembly KA68RE 1 see parts list page 28 113 Hex nut 3 8 16UNC2 KP869 13 NOTE Reclosers below serial number 480 included one lower solenoid gasket KP389R one closing plunger stop KA824R one base plate KP107R one valve dish KP108R one valve spring KP128R and one valve seat assembly KA51R Replace these parts with items 91 through 100 280 40 4 Page 27 PARTS LIST FOR TYPE WE RECLOSER IL Las phage lupum Ira ah Interrupting Assembly Units above serial no 1000 Quantity Item Catalog Per No Description Number Recloser 118 Lift rod link KP167R 6 119 Groove Pin KP3125A2 6 120 Retaining ring WA 516 KP76 12 121 Guide contact rod KP518RV2 3 122 Lock washer 1 4 med KP1040 6 123 Screw rd hd stl 1 4 20UNC 2A x 1 2 KP837 6 Quantity Item Catalog per No Description Number Recloser 124 Contact rod assembly phases AandB KA95W1 2 Contact rod assembly phase C KA95W2 1 125 Cap screw stl 3 8 16 UNC 2A x 6 KP1068 24 126 Washer 3 8 SAE stl KP1112 48 127 Contact frame assembly phases and B KA127W 2 Contact frame assembly phase C KA128W 1 128 Spacer KP3013A40 24 129 Spacer KP3008A23 24 130 Contact housing assembly K4125W 6 131 Bottom plate KP214W 3 132 Lockwasher 3 8 med KP1108 24 133 Hex nut stl 3 8 16UNC 2B KP276 24 134 Contact yoke assembly KA11W 3 135 Washer 5 16 SAE stl KP350 3 136 Stop nut elastic KP2020A2 3 137 Contact nut KP2
31. embly Remove hex nuts flat washers and lock washers from bottom of interrupter assembly Page 10 SHOP MAINTENANCE CONT D SUPPORT ARC m PLATE CONTACT INTER TUBES ASSEMBLY SSEMRLT MOVING CONTACTS PLUNGER SHAFT ONTACT ARM Figure 14 Arc interrupting assembly Reclosers above serial no 1000 fe fe n 1 Ad PLATEL i viv a 3 pn eri i r4 19 lt lt Figure 15 Components of arc interrupter assembly reclosers above serial no 1000 4 Slide the arc interrupter assembly downward Figure 15 shows the individual parts in the order of removal 5 Examine the stationary contact segments to deter mine if arc erosion has spread to the load contact surfaces If so the contact segments only or the entire stationary contact assembly should be replaced 6 Insert a large screwdriver through the stationary con tacts to engage the fillister screw slot With a box wrench loosen and remove the contact nut while the special screwdriver is held securely in a vise Remove contact arms contact cup and retaining washer leaving the retaining ring which rests in a slot on the inside of the tube Figure 16 shows a dis mantled stationary contact assembly 7 To reassemble the stationary contacts slip the contact retainer onto the fillister head cap screw and arrange the
32. es of the distribution line This connection occurs when a rotary solenoid located inside the recloser allows the closing solenoid contactor to close A trip free control lever linked with the interruption mechanism is provided to lock the recloser open manually This lever located under the sleet hood cannot be used to close the recloser but it must be in the CLOSED position before the electronic control can cause the recloser to close A contact position indicator linked to the interrupting mechanism but independent of the control lever is provided under the sleet hood GENERAL MAINTENANCE INFORMATION Maintenance Ensures Reliable Performance Reclosers are widely applied to increase service continu ity reduce system operating costs and increase revenue The Type WE recloser performs all the functions by com bining the flexibility and reliability of electronic control with proven interrupting mechanisms to achieve superior dis tribution circuit protection However the Type WE can per form at peak efficiency only if it is maintained in good condition While maintenance is relatively easy and inex pensive it is important Oil plays an essential role in arc interruption insulation and reclosing Arc interruption however contributes to oil decomposition For this reason the oil steadily diminish es in dielectric strength as the recloser continues to clear fault currents Breathing action also can result in moisture ab
33. haft S280 40 4 Page 9 Figure 13 Checking for correct moving contact clearance between contact arm and fiber plate Reclosers below serial No 1001 e Check moving contact clearance as shown in fig ure 13 measuring from the top of the contact yoke to the bottom of the interrupter assembly This space should be no less than 1 64 and no greater than 5 64 when the KA90R closing tool is turned clockwise against the stop If the space should be adjusted add or subtract one or more washers above the roll pin in the plunger shaft to obtain the correct measurement Any washers not placed above the roll pin should be retained between the contact yoke and the elastic stop nut If the fiber plates are to be replaced the new style self blast interrupter repair kit item 12 page 22 should be used The assembly proce dure is the same as for the old style except that the guide bushing and the insulating tubes for the four middle holes are not used ARC INTERRUPTER ASSEMBLY Units above Serial No 1000 After the W recloser has operated through a complete duty cycle the arc interrupter assembly should be com pletely dismantled and any worn parts replaced 1 Using a 1 2 inch thin wall socket remove the vibra tion proof hex nut that secures the contact yoke to the lift rod Gently tap contact arm to remove con tacts from the lift rod 2 Remove the terminal bolt from the top of each sta 3 tionary contact ass
34. ing transformers and battery charging trans former can be tested using the circuits shown in figure 32 An a c ammeter possessing a 0 to 500 milliampere range is required Assemble the test circuit as shown in the top drawing of figure 32 Connect the phases in series and close the recloser contacts with the KA90R closing tool as described on page 6 Connect a 1000 ampere a c test current supply to points 1 and 2 CAUTION Never use the KA90R manual closing tool on an energized recloser Ratio Test for Sensing Current Transformers 1 Energize 100 ampere test source 2 Check current through control cable receptacle sock ets K G K H and K J as identified in figure 31 For each sensing bushing CT checked the milliammeter should indicate 100 milliamperes 10 percent BE SURE TO ALLOW FOR TOLERANCES OF METER ING EQUIPMENT The resistance of certain types of meters is not negligible It may be necessary to use the 0 100 milliampere scare with its lower resistance rather than the 0 100 milliampere scale 3 A 100 ma reading verifies the 1000 1 ratio of the cur rent transformer If 100 ma is not achieved bushing CT can be suspected as faulty but polarity test should be performed De energize test source Polarity Test for Sensing Current Transformers 1 Connect sockets G H and J of the control cable receptacle in series with jumper leads as indicated in figure 32 The jumper leads connect the secon daries of the current tr
35. losers Below Serial No 1001 When stationary contacts are inspected check fiber plates of the arc interrupter chambers These plates are stacked as shown in figure 4 The twelve 1 8 inch plates have a slot cut on one end to form exhaust ports Each arc interruption causes some erosion of these slots Plates should be replaced when the arc interrupter chamber wall is reduced to 3 4 inch measured along the shortest side of the exhaust port slot as illustrated in figure 5 5280 40 4 5 LAMINATED PHEHGLIC VULCANIZED FIBER PLATES ALTERMATE FAIRS STACKED WITH SLOTS OPPOSITE DIRECTIONS VULCANIZED FIBER R GUIDE TUBE Figure 4 Fiber parts of arc interrupter assembly Reclosers below serial No 1001 ALLOWABLE EROSION Figure 5 Vulcanized fiber plate from interrupter assembly Reclosers below serial No 1001 Page 6 GENERAL MAINTENANCE INFORMATION CONT D Erosion of the slots in the fiber plates results in longer arcs being drawn Greater arc energy must then be dissipated during each interruption Test results indicate the Type WE can successfully inter rupt rated current when the arc chamber wall is reduced to the above 3 4 inch dimension Therefore if fault currents are well below maximum rated currents some further erosion can be tolerat ed If any plates require replacement the entire stock should be replaced with a new style assem bly item n
36. ned as described in the cautionary note under step 5 page 13 Connect wiring from bushing CT s and cable recep tacle to respective terminals on the terminal block Attach nylon lead strap to recloser frame PAULT SEMSING BUSHING CURRENT TRANSFORMERS THESE WIRES CONNECTED TERMI AL STRIP Figure 24 3 BATTERY CHARGING BUSHING i z MFD CUREENT TRANSFORMER RECEPTACLE CN HEAD CASTING BOLTS CAPACITOR Head casting detached from operating mechanism Hexsocket head bolts have been attached to head casting for illustrative purposes MECHANISM The head mechanism performs the actual opening and closing operations in response to signals from the electronic control Contact opening is initiated by a trip coil Contact closing is performed by the closing coil mounted below the mechanism The basic lever arrangement in the mechanism is shown here With the contacts closed figure 25 the opening springs are fully extended The trip coil push rod rests up against the toggle latch and when the trip coil is energized the toggle opens figure 26 The contact and toggle support assembly and the contact and trip arm assembly rotate on their shafts and begin to push the contacts open As the opening springs rotate the contact and trip arm assembly past this point fig ure 27 the trip arm moves the reset trip lever which releases the reset lever The reset lever is rotated by a
37. ng the tank Raise the tank and secure it to the head casting with the ten head bolts CHECK LOCKOUT LEVER AND CONTACT POSITION INDICATOR Correct operation of these components can be observed by manually operating the recloser MANUAL OPERATION Remove the closing tool port cover and gasket and insert a KA90R closing tool Manual operation can now be achieved by closing with the KA90R tool and tripping the recloser with the lockout lever See fig ure 6 CAUTION Never use the KA90R tool on an ener gized recloser If a Type WE is to be tripped out of oil use the clos ing tool to open the contacts While one person turns the tool clockwise against the stop another can move the trip lever shown in figure 7 to the right Now let the tool slowly rotate counterclockwise to open the contacts Replace port cover and gasket when manual operation is completed Figure 6 Rotating the KA90R tool clockwise to manually close the recloser SHAFT AMID FIN TO TRIP ENGAGE CLOG TOOL LEVER Figure 7 Move trip lever to the right to release recloser when opening with closing tool 15 CONNECT CONTROL CABLE TO RECEPTACLE ON RECLOSER HEAD CASTING Place recloser in service according to procedures outlined in the Type WE Installation Manual bul letin 281 25SA 1 NOTE Electronic control can be checked out with or without recloser in service Periodic operational checks can be made accord ing to the control service manual S280
38. ntact hauling silver pl KP120W 16h Fiber tube KP113W 16k Contact terminal stud silver pl KP116W 161 Contact fingers KA13W 16m Spring contact pressure KP119W 16n Spring spacer KP121W 27 ELI ae _ 280 40 4 Page 23 ed Item No 17 18 19a 19h 20 21 23 24 31 32 33 34 35 36 37 Catalog Description Number Closing coil fuse assembly KA259R Add number to indicate voltage rating 1 4 16 to 4 8 kv and 6 0 kv color band black 2 7 2 to 8 32 kv and 11 0 kv color band yellow 3 12 0 to 14 4 kv color band one red 4 2 4 kv color band two red Fuse terminal bracket KP257L Fuse bracket also included with item 17 KP714R Fuse wire jumper assembly KA28W Mach screw 1 4 20 UNC2 x 1 2 brass rd hd KP473 Washer No 14L plain brass KP818 Lock washer 1 4 med phos brz KP347 Mach screw nut 1 4 20 UNC2 x 1 2 brass hex KP274 Lift rod guide for phases A and B KP138W Lift rod guide for phase C KP139W Lock washer 1 4 x 109 x 062 stl KP337 Mach screw 1 4 20 UNC2 x 7 8 stl rd hd KP452 Lift rod link KP167R Retaining ring WA516 KP76 Contact link pin KP285R Contact lift rod assem for phases A and B KA16W Contact lift rod assem for phase C KA15W Washer 687 x 343 x 062 KP350 Mach bolt 3 8 24 UNF2 x 1 1 4 sil hrz hex hd KP727 Lock washer 3 8 med phos brz KP326 Washer No 248 silver pl brass KP986 Jumper load assembly 4
39. oll the steel spring in place 8 Refer to periodic maintenance page 5 to deter mine if the twelve slotted 1 8 inch fiber plates and the laminated 3 8 inch phenolic plates should be replaced 9 Examine the insulating supports for evidence of tracking or moisture absorption Replace any defective members as follows Remove the hexnuts lock washers and flat washers that secure the phenolic contact sup port plate to the insulating supports Loosen defective supports with pliers and remove Install new members as required and reassem ble 10 If the fiber plates are not to be replaced refer to figure 9 and reassemble the interrupter in the fol lowing order a Position stationary contact assemblies on top plates Be sure to include the gasket between these parts Note that stationary contact tubes are identical Slide them into position on the eight bolts b Install slotted fiber plates in pairs to form six exhaust ports in each interrupter assembly Exhaust ports open to the load side on the end phases and to the source side on the center phase c Slip the fiber tubes over the four center bolts and push up through the slotted fiber plates d Match the guide bushing with the center hole of the bottom plate and position the plate Replace the flat washers lock washers and hexnuts on the mounting bolts Be sure reinforcing bars are placed on the exhaust end Then install the moving contacts on the plunger s
40. plunger KP104R 85 Insulating spacer KA62R 13 86 screw 3 8 16UNC2 x 1 1 2 stl hex hd KP419 8 87 Lockwasher 3 8 med steel KP556 4 88 Upper solenoid frame KP100R2 1 89 Closing coil and fuses kit includes items 51 91 and 153 1 60 cycle KA834R 50 cycle KA861R__ 2 40 cycle KA860R Add correct number 1 2 4 kv 2 4 16 to 4 8 kv 3 7 2 to 8 32 kv 4 12 0 to 13 8 kv 5 14 4 kv 6 6 0 kv 7 125 vdc 8 250 vdc 9 11 0 kv 10 3 3 kv 90A Rod solenoid frame KP1669R 4 90B Solenoid frame shoe Alternate far 90A KP102R 2 91 Fiber stop also included with item 89 KP106R 1 92 Closing plunger stop KP1667R 1 93 Bridge plate KP1668R 1 94 Plate KP1587R1 1 95 Spring valve lift KP563R 2 96 Spacer KP3009A6 2 97 Washer 1 2 AN light stl KP1103 1 98 Washer 14L brass KP818 2 99 Lockwasher 1 4 med KP337 2 100 screw 1 4 20UNC2 x 2 1 4 stl hex hd KP751 2 101 Head to frame spacer KP227R1 6 102 Lockwasher 1 2 med stl zn pl KP1107 6 103 Socket cap screw 1 2 13UNC2 X 4 1 2 stl hex black oxide finish or equivalent KP2036A3 6 104 Quick release control lever coupler KP1177R 1 105 Quick release counter shaft coupler KP1056R 1 106 Retaining ring WA514 stl KP75 7 107 J Lockwasher 1 4 x 109 x 0628t stl KP337 3 108 Cap screw 1 4 20UNC2 x 3 4 stl hex hd KP735 3 109 Closing solenoid contactor kit KA852R 1 110 Contact toggle spring KP141R 2 111 Contactor link pin KP1306R 1 112 M
41. re KPS339A1050 2 23 Port cover plate gasket KP247R 1 68 Capacitor 23355 0 2 MFD 24 Head casting includes control Potter Co 2500 VDCW 1 shaft bushings items 34 and 42 KA840R 1 69 Resistor 1K 25W KP4022A36 1 25 Head gasket KP120R 1 70 Resistor 100 ohm 25W KP4022A31 3 26 Indicator and support assembly KA19RE 1 71 Terminal bracket KP96GS 4 27 Spacer KP3013A11 3 72 screw 1 2 13NC2 x 3 1 4 28 Groove pin KP3126A4 1 electro zn and iridite pl hex 29 WA514 retaining ring KP75 1 hd stl KP752 10 30 Lockout handle assembly KA621R 1 73 Washer wrought galv KP2028A23 10 31 Link rod and pin assembly KA314R 1 74 Tank liner kit see Note pg 6 KA867R 1 32 Handle lever assembly KA320R 1 75 Tank assembly KA88W 1 33 Spacer KP3010A6 1 76A Pipe plug 1 2 solid sq hd 34 Handle shaft gearing included brass KP2007A3 1 with item 24 KP259R 1 76B Gate valve 100 Ib 1 2 brass 35 WA516 retaining ring KP76 1 optional KA809R 1 36 WA510 retaining ring KP72 4 76 Close nipple included with 37 Spacer KP3006A9 1 item 76B KP2039A1 1 38 Groove pin KP3123A12 1 77 Retaining ring WA518 stl KP79 4 Page 26 Quantity Item Catalog Per No Description Number Recloser 78 Insulating link for closing plunger KP103R 2 79 SAE washer 13 16 x 13 32 062 zinc pl KP1102 2 80 Plunger link pin KP3126A2 1 81 Spacer for plunger link KP3010A1 3 82 Plunger link pin KP113R 1 83 Setscrew No 10 32 x 1 4 pin lock KP394 1 84 Closing
42. red if the majority of fault currents are near the maximum interrupting rating Oil that has become contaminated with carbon and sludge or has a dielectric strength of 18 kv or lower should be replaced Use only oil that meets the requirements tabulated below for L M switchgear Refer to ASTM Methods of Testing Electrical Insulating oil Publication D117 This publica tion is available from the American Society for Testing Materials 1916 Race Street Philadelphia Pennsylvania CHARACTERISTICS OF OIL FOR L M SWITCHGEAR Color nearly colorless ASTM colorimeter 2 1 0 max Union colorimeter 2222 2 0 max aie neutral Neutralization number 0 03 mg KOH g max Free Sulphur eei tte etate none Corrosive compounds 3 max Steam emulsion number 25 seconds max Flash point te cette 145 C min 293 F Here 160 C min 320 F Pour ntt enis 45 69C max 50 F Viscosity at 37 8 C 100 F Saybolt Universal 62 sec max at 0 c 32 F Sayholt Universal 320 sec max Specific gravity at 20 0 C 6B OOF 0 895 cc max Co efficient of expansion abo od Bel oasis as vea 0 000725 at 1009 2120 0 000755 Interfacial 40 dynes
43. shers on the terminals of contactor lower end of the bushing to release the four flexible straps CLOSING SOLENOID To replace a blown closing solenoid fuse simply discon 2 Remove the three hexhead cap screws that secure nect the long lead at the closing solenoid contactor the the bushing clamps to the head casting Lift the short lead at the fuse end and loosen the mounting bushing assembly up through the head casting strap Slide out the fuse and install a new one 3 An aluminum clamping ring cushions the pressure A tag attached to each closing solenoid coil shows the between the bushing and bushing clamps If it is in color band coding and catalog number of the correct good condition the ring can be reused Twist the ring fuse to protect the coil Table also shows this informa and slip it from the bushing tion Be sure fuse leads clear any grounded parts and insulating supports by 1 2 inch 4 Now the bushing assembly can be replaced com pletely or new porcelain only may be installed If BUSHING TERHINAL CE TERMINAL GASKET BUSHING CLAMPS por 7 UMEN CLAMPING RING BUSHING LOCK WASHER 9 HEXNUT 8 Figure 20 Components and associated parts of bushing assemblies new porcelain is to be used unscrew the bushing terminal and draw the bushing lead rod from the lower end of the porcelain Insert the rod in the new porcelain and replace the bushing terminal Be sure to use a ne
44. sorption by the oil thus lowering its insulation value For effective recloser operation oil must be replaced before it deteriorates beyond a safe level Climate and Duty Determine Maintenance Intervals Frequency of maintenance depends upon local climatic conditions and the interrupting duty imposed on the recloser L M recommends the unit be inspected com pletely cleaned and filled with new oil at least once each year If the Type WE operates through a duty cycle in less than one year periodic maintenance should be per formed then The NEMA standard duty cycle for power class 111 reclosers is as follows Fault Current Number of Percent of Maximum Recloser Interrupting Circuit Operations Rating X R Value 28 15 to 20 3 20 45 to 55 7 10 90 to 100 14 Total 58 280 40 4 Page 3 COVER CLAMPED BUSHINGS HAMEPLATES SLEET HODD se a MANUAL LOCKOUT LEVER TERMINAL STRIP 1 CONT il ASSEMELIES i CLOSING 5OLENOID PORT AHD COVER Foe katit MAHUAL CLOSING TOOL CONTACT POSITION INDICATOR CLOSING SOLENOID FUSES GORING CAET CLOSING SOLENOID COM TAC TOR INTERRUPTER ASSEMBLIES Figure 1 Untanked Type WE Recloser Page 4 GENERAL MAINTENCE INFORMATION CONT D High Dielectric Strength Maintains Oil Effectivness Although the Type WE can undergo a complete duty cycle without requiring an oil change more frequent oil changes will be requi
45. t 1 4 20NC2 stl cad Cam roller assembly Machine screw 10 24NC2 x 7 16 19 rd hd stl cad 280 40 4 Page 29 Quantity Catalog Per Number Recloser KP98L 2 KP433 2 KP3007A30 1 KP502 1 KP350 13 KP1176R 1 KP77 19 KA15RE 1 KA15RE 1 KP30 2 2 KA63RE 1 KP669 6 KP813 6 KP573 6 KP280R 1 KP16GS 1 KP330R 1 KP3006A6 2 KP282R 1 KA17RE 1 KP12GS 2 KP1488R 1 KP1147R 1 KP731R 1 KP3007A1 1 KP811 1 KA253R 1 KA647R 1 KA13RE 1 KP1678R 1 KP125RE 1 KP3007A8 1 KA55RE 1 KP827 2 KP701 1 KP279 1 KA67R 1 KP489 2 Page 30 PARTS LIST FOR MECHANISM FRAME ASSEMBLY 280 40 4 Page 31 PARTS LIST FOR MECHANISM FRAME ASSEMBLY Quantity Quantity Item Catalog Per Item Catalog Per No Description Number Recloser No Description Number Recloser 78 Contact and toggle support 111 Mounting bracket KP163RE 1 assembly KA361R 1 112 Shaft spring anchor KP292R 1 79 Toggle pin KP273R 1 113 Spring reclosing KP191R 1 80 Retaining ring 5133 37 114 Retaining ring WA516 Type KP77 19 Type E KP86 2 115 Lever reset trip order only 81 Shaft KP1198R 3 with items 116 and 117 KP194R 1 82 Spacer KP3009A18 1 116 Roll pin 3 32 X 3 4 Ig order 83 Spacer KP3009A22 2 only with items 115 and 117 KP523 2 84 Retaining ring WA520 KP100 6 117 Shaft order only with items 85 Toggle assembly KP450R 1 115 and 116 KP153RE 1 86 Reclosing shaft order only 118 Machine screw 10 24NC2 with items 87 88 and 89 KP295R 1 1 Ig rd hd
46. t 5 8 11UNC2 galv KP2064A7 2 3 7 2 to 8 32 kv 4 12 0 to 10 Bushing assembly standard KA18W 6 13 8 kv 5 14 4 kv Item 51 is Bushing assembly standard also included with item 89 for use with BCT KA41W 6 52 Self tapping screw No 4 x Bushing assembly 17 3 16 sstl KP21 8 creepage distance KA79W 6 53 Receptacle wiring duct assembly Bushing assembly 17 creep assembly KA33RE1 1 age distance for use with BCT KA58W 6 54 Cable clamp KP2006A2 4 11 Mach bolt 3 8 16UNC2 x 2 55 Cable clamp KP2006A1 2 sstl hex hd KP763 18 56 Machine screw 8 32UNC x 12 Bushing clamp KP1109R 18 5 16 lg rd hd stl cod pl KP678 6 13 Bushing clamping ring 57 Lockwasher 10 med sstl KP994 6 aluminum KP1111R 6 58 Current transformers KP144RE 4 14 Lower Bushing gasket KP1112R 6 59 Support current transformers KP145RE 8 15 Cover plate KP609R 2 60 Spacer KP3009A38 8 16 Mounting gasket for auxiliary 61 Washer 145 plain brass KP339 16 switch KP610R 1 62 Lockwasher 18 8 1 4 X 0 109 17 Mach screw 1 47 200 2 x 5 8 x 0 062 sstl KP563 8 sstl rd hd KP613 10 63 screw 1 4 20NC2 x 2 1 4 18 Lock washer 14 20UNC2 x Ig hex hd stl cad pl KP798 8 5 8 sstl rd hd KP563 8 64 Machine screw 10 24NC2 x 19 Terminal box gasket KP611R 1 2 1 2 lg rd hd stl cad pl KP668 4 20 Oil level dipstick KA363R 1 65 Lockwasher 10 med KP564 4 21 O ring gasket KP2000A9 1 66 Mach screw nut 10 24NC2 KP272 4 22 Closing tool port cover KP246R 1 67 Lead wi
47. the load cur rent contact surfaces LOAD CUBRIMT CONTACT SURFACES ANIMO TIPS Figure 2 Left moving contact assembly after one full duty cycle right contact assembly new Figure 2 shows a set of moving contacts after they have experienced severe interrupting duty and a new set for comparison The used contacts shown have reached the condition where they should be replaced If moving contacts appear to have further useful life inspection of the arc interrupter chamber and sta tionary contacts can be omitted These components are designed to last at least the life of the moving contacts 5 INSPECT STATIONARY CONTACTS If moving contacts of any phase or phases are in questionable condition the corresponding stationary contacts should be inspected Refer to page 7 or 9 for instructions on removal and reassembly of the fiber plates that form the arc interruption chambers Removal of these plates is necessary for inspection of the stationary contacts Figure 3 shows a stationary contact assembly after one duty cycle and a new assembly for comparison Note that erosion of the load current contact sur faces has started The six contact segments or the entire assembly should be replaced TIPS LOAD CURRENT we CONTACT SURFACES Figure 3 Left Stationary contact assembly after one full duty cycle right new contact assembly Reclosers below serial No 1001 6 INSPECT ARC INTERRUPTER CHAMBERS Rec
48. umber 12 page 22 Reclosers Above Serial No 1000 The insignificant cost of the fiber plates making up the arc interrupter chambers on all reclosers above serial no 1000 permits complete replacement whenever the stationary contacts are replaced A visual comparison of bottom and top plates will indicate necessity for replacement The top plates closest to the stationary contacts and nearest to the most arcing will show enough erosion to pro vide a decision for replacement 7 CLEAN ALL INTERNAL COMPONENTS Remove all carbon traces by wiping with a clean lint free cloth Pay particular attention to all insulat ing members Flush the mechanism with clean dry transformer oil CAUTION Never use volatile solutions detergents or water soluble cleaners 8 DRAIN OLD OIL Remove the inch pipe plug at the bottom of the tank or open the tank valve if one has been installed Rinse the tank with clean oil and wipe out all carbon traces with a clean lint free cloth 9 INSPECT TANK LINERS Any soft or spongy areas in the liners indicate moisture has been absorbed These areas are most likely to occur near the bottom of the tank When replacing liners be sure the new liner installed in each section is the same size as the original If interrupting duty is severe the tank liners may be eroded near the exhaust ports of the arc interrupt ing structures Replace any liners that show appre ciable erosion NOTE For reclosers belo
49. ving NOTE Switch leads need only be connected between the proper terminals for correct operation Reversing leads between switch terminals has no effect on recloser operation MERCURY LEVER SWITEH 2 LEADS LOOP ONCE MOUNTING OVER SHAFT SCREWS STRAFS LOCKOUT Figure 33 Location of mercury switch 2 PARCHINE TERMINAL SCRE YS SCREWS HESNHMUFE BICC oH t RET Ind SPRING FLAT l IPH BRACKET E AM Cal BO PIN LEWER THAT Figure 34 Properly installed microswitch 1 5 Pass sleeving through mounting straps and tighten to secure sleeving Connect switch leads to proper terminals Position switch as shown in figure 33 and secure mounting straps to lever If switch is posi tioned opposite to that illustrated in figure 33 the recloser will operate improperly Microswitch 1 Refer to figure 34 and proceed as follows 1 Disconnect the two white leads from the top of the microswitch 2 Remove two round head machine screws to release microswitch from mounting bracket A hexnut and washer will be released from the threaded end of the screw 3 Attach new microswitch to mounting bracket Adjust microswitch so that roller lever stop just touches base of switch when roller rides on cam When roller is off cam it should just clear flat of cam as shown in figure 34 Tighten machine screws 4 Reconnect leads to two terminals nearest rotar
50. w Serial No 1001 the replacement liners come in a kit as part number KA829W For reclosers above seri al number 1000 replacement liners come in a kit as part number KA867R 10 CHECK CIRCUIT COMPONENTS 1 12 13 14 ATTACHED TO THE RECLOSER COVER FRAME AND OPERATING MECHANISM These components are identified in figures 23 30 and 33 Be sure all wiring to the terminal strip is secure at each terminal The rotary solenoid and trip solenoid should be firmly attached to the recloser frame Check mercury switches attached to the counter shaft and main shaft They should be securely held in place by the nylon mounting straps Check the microswitch mounted above the main shaft It should be firmly held in place by the mounting bracket Check bushing current transformers See that wiring is in order FILL TANK WITH OIL Use only new transformer oil with dielectric strength of at least 26 kv as measured across a standard 0 1 inch gap in accordance with methods presented in ASTM Publication D117 The oil level should be 2 1 4 inches from the top of the tank with the mecha nism removed The level can be double checked with the oil level gauge after the mechanisms and head casting have been fastened in place The capacity of the tank is approximately 38 gallons REPLACE TANK Clean the O ring head gasket and the tank gasket seat Move the control lever to the closed position to avoid any possible binding while raisi
51. w terminal gasket figure 20 5 Replace the bushing assembly using a new gasket between the bushing and the head casting When securing the bushing clamps be sure to tighten the three bolts evenly a little at a time CAUTION When reconnecting bushings position flexible leads at least 1 2 inch from any vertical insulating support grounded part or contact plunger rod REMOVAL OF HEAD CASTING Access to components located in or on the main frame such as the operating mechanism mercury switches trip solenoid rotary solenoid and internal wiring is achieved by removing the head casting Proceed as follows 1 Disconnect all bushing leads at the lower end of the bushings 2 Disengage the lockout lever and the contact posi tion indicator by pushing the spring loaded cou plers inward Refer to figure 21 Turn the couplers to lock them in the disengaged position 280 40 4 Page 13 CONTACT POSITION INDICATOR LOCKOUT LEVER SPAIN LOADED SLEEVES Figure 21 Spring loaded sleeves of lockout lever and contact posi tion indicator in engaged positions OPERATINC LEVER E RING Figure 22 Auxiliary awitch disconnection from operating lever before removal of head casting from operating mechanism If an auxiliary switch accessory is mounted on the recloser head casting remove the E ring and wash er figure 22 to allow disconnection of the operating lever Remove the two screws
52. y solenoid as shown Rotary Solenoid Refer to figures 23 34 and 35 and proceed as follows to replace the rotary solenoid 1 Drive out the roll pin that secures the spring lever to the rotary solenoid shaft Detach retarding spring from cotter pin 5280 40 4 Page 21 fora 1 Sach S LEADS HEXHUT SP ACER y 7 ss F 4 ii 1 C 20 seat ADT ARIA LEVDE SPRI Figure 35 Top view of rotary solenoid and associated components 2 Remove hexnuts and lock washers that secure the rotary solenoid to the recloser frame Disconnect PUSH MOUNTING solenoid leads from the terminal block and remove 3 BRACKET STUDS rotary solenoid 3 Remove hexnut spacers and washers from rotary solenoid mounting studs and attach to new solenoid Install new rotary solenoid by reversing the foregoing procedure Be sure solenoid leads are connected to correct terminals Refer to figures 23 and 31 Trip Solenoid The trip solenoid figure 36 is replaced as follows 1 Disconnect leads from terminals A and B of the terminal block 2 Loosen the hexnut that secures the nylon mount ing strap to allow lead sleeving to slip through freely 3 Remove two socket head set screws that secure the trip solenoid to the mounting bracket Detach trip solenoid from bracket Two lock washers will be released TRIF SOLENOID HEX NUTS
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