S280-45-5 - Cooper Industries
Contents
1. 7 Operating Linkage Figure 25 26 Insulation Level Withstand Tests 8 Operator Cabinet Figure 26 28 Shop Maintenance Instructions 9 Terminal Panel Figure 27 30 BUSIINQS i eniti teer eerte tenet ete pea 9 Decals and Labels Figure 28 32 Vacuum 9 Operating Mechanism Electrical Parts Figure 29 34 Operating 11 Operating Mechanism Mechanical Parts Figure 30 36 June 1991 e New Issue Printed in USA Type VSA12 VSA16 and VSA20 800 Maintenance Instructions SAFETY INFORMATION Following is important safety information For safe instal lation and operation of this equipment be sure to read and understand all cautions and warnings Hazard Statements This manual contains two types of hazard statements WARNING Refers to hazards or unsafe practices which could result in severe personal injury or death and equipment damage CAUTION Refers to hazards or unsafe practices which could result in damage to equipment or in personal injury Safety Instructions Following are general caution and warning statements that apply to this equipment Additional statements relat ed to sp2. 20 5280 45 5 SERVICE PARTS LIST The service parts and hardware listed and illustrated include only those parts and assemblies usually fur nished for repair or involved in the maintenance proce dures described in this manual Further breakdown of listed assemblies is not recommended Dimensions of all common hardware parts have been carefully checked so that they may be locally acquired The suffix letter of the 14 character catalog number for common hardware parts codes the plating of the part A No plating raw material H Silver M Black oxide Cadmium zinc chromate Y Zinc chromate Z Electro zinc bronze irridite A hardware kit Catalog No KA849R1 contains an assortment of roll pins cotter pins retaining rings stop nuts etc common hardware parts used in Cooper Power Systems reclosers that may not be readily locally available To assure correct receipt of any part order always include recloser type and serial number Because of Cooper Power Systems continuous improvement policy there may be instances where the parts furnished may not look exactly the same as the parts ordered However they will be completely interchangeable without any rework of the recloser Prices of Replacement Parts Section S280 01 Part No 45 lists recommended spare parts and prices for most parts Parts not listed in price list may still be available consult your Cooper Power Systems sales engineer for
3. VSA 12 VSA 16 VSA20 Maximum Design Voltage kV 15 5 15 5 15 5 Nominal Operating Voltage kV 2 4 14 4 2 4 14 4 2 4 14 4 Basic Insulation Level BIL KV 110 110 110 60 Hertz Withstand Voltage kV Dry one minute 50 50 50 Wet ten seconds 45 45 45 Max RIV at 1 0 MHz 9 41 kV uV 100 100 100 Table 2 Duty Cycle Percent of Maximum Circuit Maximum Number of Unit Interrupting Rating X R Ratio Operations 15 20 4 88 45 55 8 112 90 100 15 32 Total 232 Table 3 Mechanical Life Open Close no load operations 2500 Table 4 Electrical Specifications Trip Solenoid Operating voltage 24 Peak current eese 12 2 Actuation time cycles 5 1 25 21 Close Solenoid Operating voltage 24 Peak current 15 5 Actuation time cycles 5 1 5 25 Spring Charging Motor STANDARD ACCESSORY Operating Voltage Vac 240 120 Voltage Range Vac 190 257 90 127 Maximum Current RMS A 14 18 Steady State Current A 4 1 9 Running Time cycles s 40 0 67 40 0 67 DC Resistance Nominal Bushings terminal to terminal IQ 120 Interrupter terminal to terminal UQ 29
4. 14 5280 45 5 100 TEST CIRCUIT 2 CONTROL CABLE RECEPTACLE SOCKETS SENSING CTS RATIO TEST CIRCUIT A Figure 17 Test circuit for checking bushing current transformers RECLOSER CONTACTS IN CLOSED POSITION TEST LEADS CONNECTING PHASES IN SERIES TEST LEADS CONNECT BUSHING CT SECONDARIES IN PARALLELS POLARITY TEST CIRCUIT B 15 Type VSA12 VSA16 and VSA20 800 Maintenance Instructions Sensing Current Transformer Replacement To replace a damaged current sensing transformer pro ceed as follows refer to Figure 18 SPACER COIL RETAINER PLATE THREADED _ SPACER SS WASHER gt a LOCKWASHER 7 8 CAPSCREW Figure 18 Current sensing transformer replacement 1 Remove bushing that passes through the current transformer that is to be replaced 2 Label sensing current transformer leads Use labeling in accordance with connection diagram The X1 leads are white and the X2 leads are black 3 Cut leads on transformer side of the original splice to disconnect current transformer 4 Remove capscrews that secure current transformers Remove and discard damaged sensing CT retain coil retainer plate Note Sensing CTs are marked with a black spot to indicate polarity when installing the replace ment CT orient the black dot to match the dot on the other CTs that are already installed 5 Install replacement CT secure
5. controls refer to S280 75 1 Form 4C microproces sor based controls refer to S280 77 1 IMPORTANT Form 3A electronic control must be equipped with the KA1175ME fuse accessory This accessory supplies a MDQ 2 5 closing coil control fuse which is required to operate the closing solenoid Controls must not be programmed with reclose delay intervals that are shorter than 0 5 second The instanta neous reclose delay plug must not be used The KA1177ME 1 reclose delay plug provides a fixed 0 5 second delay A maximum of one 0 5 second delay can be used successive reclosing operations must be a minimum of two 2 seconds 10 Refer to the applicable sections of the Type VSA12 VSA16 and VSA20 800 Installation Instructions 5280 45 1 for procedures to return the recloser to service 5280 45 5 MANUAL OPERATION The recloser can be manually closed and tripped with a set of operating levers on the operator mechanism inside the cabinet Figure 5 or a set of pullrings located exter nally on the underside of the cabinet Figure 6 To Close Recloser Proceed as follows 1 Apply rated voltage to the input terminal block on the side of the operator cabinet NOTE If closing springs are discharged the motor will operate immediately to charge the springs MANUAL MANUAL Figure 5 Manual operation control levers 911062KMA 2 When closing spring status indicator reads SPRINGS CHARGED lift up t
6. procedures or process described nor to provide directions 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 INTRODUCTION Service Information S280 45 5 covers the maintenance instructions for the type VSA electronically controlled three phase vacuum recloser The manual includes a general description of the recloser and its operation and instructions for periodic inspection testing and shop repairs Keyed service parts exploded view drawings of the unit along with ordering information are included at the back of the manual 5280 45 5 DESCRIPTION AND OPERATION The VSA12 VSA16 and VSA20 800 three phase reclosers feature vacuum interruption and air insulation Current interruption takes place in the rugged vacuum interrupter assemblies which are suspended from the recloser cover by insulating supports as shown in Figure 2 The moving contacts located in each interrupter assembly driven by the recloser operating mechanism close or open the circuit Interruption takes place within two and one half cycles while utilizing a contact stroke of one half inch Recloser tripping and closing are initiated by signals from the recloser control unit When current in excess of the programmed minimum trip level is de
7. 2 2 Groove pin KP3126A14 6 11 Spacer KP3009A92 2 3 Retaining ring 12 Groove pin KP3126A17 1 Type C stl K970901375000M 26 13 Main operating spring KP1094VS 2 4 Groove pin KP3126A11 6 14 Spring retainer KP1078VS 1 5 Spacer KP3011A49 12 15 Retaining ring 6 Link assembly KA236VS 2 Type WA 518 K970901375000M 4 7 Spacer KP3011A50 6 16 Bolt spring retainer KP1015VS2 1 8 Link assembly KA122VS 12 17 Washer 3 8 stl K900201037000Z 1 27 VSA12 VSA16 and VSA20 800 Maintenance Instructions Figure 26 Operator Cabinet 28 5280 45 5 Operator Cabinet Figure 26 Qty Qty Item Catalog per Item Catalog per No Description Number Assy No Description Number Assy Cabinet assembly 23 Lockwasher 8 complete includes med st stl K900815008000A 2 items 1 thru 11 KA154VS4 1 24 Spring KP1215VSM 1 1 Cabinet only KA133VSM 1 25 Elastic stop nut KP2020A6 2 2 Gasket KP2084A7 1 26 Washer KP2090A39 2 3 Latch assembly KA152VS 1 27 Machine screw rd hd 4 Machine screw flat 6 32 x 3 8 brass K721525106037A 2 hd 10 24 x 3 4 stl K721601110075Z 1 28 Flat washer 6 st stl K900215006000A 2 5 Spacer KP3006A32 1 29 Spacer KP3017A2 1 6 Flat washer K90020101000Z 1 30 Lockwasher 1 2 7 Bushing KP3041A5 1 med st stl K900815050000A 1 8 Handle assembly KP153VS 1 31 Crank assembly KA134VSM2 1 9 Vent plug KP2204A1 2 32 Spacer KP3013A61 2 10 Window KP1240M 2 33 Hex nut 1 4 20 stl K880201120025Q 2 11 Speed nut KP2
8. 47 BUSHING INSULATING LEAD BARRIER NYLINER y BUSHING WIRE 5 VACUUM INTERRUPTER INSULATING BARRIER LOWER TE L 81 BUSHING ES LEAD CLAMP Tiap ASSEMBLY TW CLAMP m CLAMP 7 STRINGER HARDWARE HARDWARE HARDWARE Figure 9 Vacuum interrupter replacement NOTE If contact rod does not move interrupter may have lost vacuum or the contact rod may be sticking within the clamp Use a screwdriver to gently spread clamp to free rod 6 Remove hardware attaching lower current exchange plate to stringers Carefully lower plate and vacuum interrupter assembly from between stringers 7 Loosen lower current exchange clamp and remove interrupter If stationary contact rod sticks within clamp use a screwdriver to gently spread clamp to free rod 8 Remove insulating barrier from top of old interrupter and install on new interrupter 9 Install stationary contact rod into lower current exchange plate do not tighten clamp hardware CAUTION Interrupter damage When installing the moving contact rod into the upper clamp avoid twisting or cocking the rod Excessive force can dam age the bellows causing loss of vacuum and irrepara ble damage to the interrupter and or premature interrupter failure 10 Carefully place interrupter and lower current exchange assembly into position situate moving con tact rod within upper clamp as assembly is installed Ins
9. 5280 45 5 Table 5 Current Ratings Table 6 Mechanical Specifications VSA 12 VSA 16 VSA20 Continuous Current Rating A 800 800 800 Symmetric Interrupting Current A 12 000 16 000 20 000 Cable Charging Current A 2 2 2 Magnetizing Current A 28 28 28 3 Second Current Symmetric A Momentary Current Asymmetric A 12 000 16 000 20 000 20 000 25 600 32 000 Operating Temperature C MINIMUM 30 Maximum ono A 50 Closing Mechanism Spring Operated Opening Mechanism Spring Operated Contact Gap inches mm 0 5 13 7 Close Contact Travel Time cycles ms 0 5 8 Open Contact Travel Time cycles ms 0 5 8 Maximum Arcing Time cycles ms 1 0 17 Interrupting Time cycles ms 2 5 42 Allowable Contact Erosion inches mm 0 125 3 2 Opening Time 24 Vdc solenoid signal to Contact Part ms esee 19 25 Closing Time 24 Vdc solenoid signal to Contact Make 32 MAINTENANCE Frequency of Maintenance Because reclosers are applied under widely varying operating and climactic conditions maintenance inter vals are best determined by the user based on actual operating experience To assure proper and trouble fre
10. OPEN 3 MOTOR CIRCUIT 152 1 CLOSED MOTOR M ENERGIZED 4 DE ENERGIZED CLOSING CHARGED SPRINGS 5 DISCHARGED SPRING POSITION OPEN SWITCH 24 Vdc 6 152 SP1 CLOSED CONTACT OPEN CLOSED CLOSING 7 CIRCUIT 152 bb1 CLOSED MANUAL TRIP AND OPEN RESET SWITCH 8 1521151 CLOSED CLOSING ENERGIZED SOLENOID COIL 9 152 CC DE ENERGIZED MAIN OPEN CONTACTS 10 CLOSED CONTACT TO OPEN OPEN TRIP COIL 152 a1 CLOSED TRIP SOLENOID ENERGIZED COIL 152 TC 12 DE ENERGIZED CONTACT TO OPEN OPEN TRIP 13 SOLENOID COIL 152 a2 CLOSED AUXILIARY SWITCH OPEN CONTACT 14 CLOSED AUXILIARY SWITCH OPEN 5 b CONTACT CLOSED 240 or 120 Vac APPLIED CLOSE SIGNAL OPEN SIGNAL NOTE Unit in DPEN position with closing springs discharged when auxiliary power is initially applied MANUAL CLOSE or TRIP pullrings are not operated Drawing shows operational sequence only it does not have a scaled time base Figure 19 Sequential operation of control circuit components in recloser 17 Type VSA12 VSA16 and VSA20 800 Maintenance Instructions j TES 1 4 SP pex T 1 t rye PULS Lr A 1 24 oR AS AUXILIARY SWITCH 152 OPEN 152 TRIP COIL SOLENOID D DIODES
11. ated switches The opening springs and the linkages to operate the interrupters are located under the head of the recloser The major components of the operating mechanism are easily accessible without need to remove the mecha nism However if necessary the complete operating mechanism can be removed from the operating cabinet as a unit Mechanism Removal 1 Remove fused pullout switch to de energize AC power source to operator mechanism 2 Make sure recloser contacts are open manually operate mechanism if necessary until contact posi tion indicator reads OPEN and closing spring status indicator reads SPRINGS DISCHARGED 3 Remove screws attaching auxiliary switch to mecha nism frame Remove auxiliary switch 4 Loosen operating bar turnbuckle assembly inside interrupter housing see Figure 11 OPERATING BAR ASSEMBLY TURNBUCKLE ASSEMBLY ROLL PIN Figure 11 Turnbuckle assembly 5 Remove link pin that attaches operating mechanism to operating bar assembly Figure 12 OPERATING BAR ASSEMBLY LINK PIN 911065KMA Figure 12 Location of link pin 6 Turn operating bar clockwise 90 degrees to disen gage roll pin from anti bounce latch 7 Unplug wiring harness from panel board on the back of the cabinet 8 Remove trip reset knob and front plate remove cot ter pin to disconnect external trip pullring from threaded pin on trip link Figure 13 TA COTTER PIN TRIP PULL
12. of the interrupters Testing is performed at 37 5 kV rms 75 of the rated low frequency withstand volt age of the VSA recloser TEST 1 Proceed as follows 1 Manually close main contacts of recloser 2 Ground recloser housing 3 Connect all three bushings on one side of the reclos er together 4 Apply proper test voltage to the connected bushings 5 The recloser should withstand the test voltage for 60 seconds TEST 2 Proceed as follows 1 Manually close main contacts of the recloser 2 Ground housing 3 Ground outer two phase bushings 1 2 and 5 6 4 Apply proper test voltage to center phase bushings 3 4 5 The recloser should withstand the test voltage for 60 seconds TEST 3 Proceed as follows 1 Open main contacts of recloser 2 Ground recloser housing 3 Connect and ground all three bushings on one side of the recloser 4 Connect the other three bushings together 5 Apply proper test voltage to the ungrounded bush ings 6 The recloser should withstand the test voltage for 60 seconds 7 Reverse the ground and test connections and apply test voltage to the ungrounded bushings for 60 sec onds 8 The recloser should withstand the test voltage for 60 seconds TEST RESULTS These high potential withstand tests provide information on the dielectric condition of the recloser and the vacuum integrity of the interrupters 1 If the recloser passes the closed contacts tests Tests 1
13. replacement 4 stl K900801025000Z 4 kit consists of 2 47 Plain washer 1 4 stl K900201025000Z 8 brushes and 2 brush 48 Spacer KP3105A29 4 caps 49 Cap screw hex hd For 240 Vac motor KA1294VSM900S 1 1 4 20 x 3 stl K730101125300Q 4 For 120 Vac motor KA210VSM900S 1 50 Pinion KP1059VS 1 20 Machine screw skt hd 51 Roll pin 0 156 x 3 4 stl K970801156075C 1 1 4 20 x 3 8 stl KP2036A29 4 52 Roll pin 0 125 x 1 2 stl K970801125050C 1 21 Counter spring KP1191VSM 1 53 Plain washer KP2028A67 3 22 Counter assembly KA28CO9 1 54 Spacer KP3010A14 1 23 Self tapping screw 55 Gear assembly 1st Type F 46 32 x 3 8 intermediate KA165VSM 1 St stl K751515106037A 1 56 Gear assembly 2nd 24 Counter bracket KPIISOVSM 1 intermediate KA166VSM 1 25 Machine screw rd hd 57 Spacer KP3011A112 1 6 32 x 2 1 2 stl K721501106050Z 2 58 Gear assembly main KA164VSM 1 26 Split lockwasher med 59 Retaining ring KP2013A32 1 6 stl K900801006000Z 2 60 Washer KP2028A17 1 27 Hex nut 6 32 stl K881001132006Z 2 37 Type VSA12 VSA16 and VSA20 800 Maintenance Instructions 38 5280 45 5 39 Type VSA12 VSA16 and VSA20 800 Maintenance Instructions Ll COOPER POWER SYSTEMS COOPER INDUS73IES 91991 Cooper Power Systems Inc Kyle is a registered trademark of Cooper Power Systems Inc PO Box 2850 Pittsburgh PA 15230 40 amp Printed on Recycled Paper
14. stl K721501110031Z 2 3 Switch 2 DPST 152 a1 32 Split lockwasher med 152 a2 KA612R24 1 10 stl K900810010000Z 2 4 Machine screw rd hd 33 Plain washer 10 10 24 x 2 3 4 stl K721501110275Z 2 brass K900525020043Z 2 5 Split lockwasher med 34 Manual close 10 stl K900801010000Z 2 switch 152 MCS KA2181A8 1 6 Spacer KP3009A167 2 35 Machine screw rd hd 7 Trip solenoid 152 TC KA1055M1 1 6 32 x 7 8 stl K721501106087Z 2 8 Machine screw rd hd 36 Split lockwasher med 10 24 x 5 16 stl K721501110031Z 4 6 stl K900801006000Z 2 9 Split lockwasher med 37 Manual limit switch 0 stl K900801010000Z 4 152 LS1 KA201CE 1 10 Plain washer 10 38 Insulating barrier KP1244VSM 1 brass K900525020043A 4 39 Machine screw rd hd 11 Solenoid stop KP1092CE 1 4 40 x 1 2 stl K721501104050Z 2 12 Machine screw rd hd 40 Split lockwasher med 10 24 x 5 16 stl K721501110031Z 1 4 stl K900801004000Z 2 13 Split lockwasher med 41 Spring position switch 10 stl K900801010000Z 1 152 SP1 152 SP2 KP2181A8 2 14 Closing circuit 42 Insulating barrier KNC1070S 1 switch 152 bb1 KP2181A8 1 43 Spacer KP3007A32 2 15 Spacer KP3006A56 2 44 Machine screw rd hd 16 Machine screw rd hd 6 32 x 2 stl K721201106200Z 2 316 32 x 1 stl K721501106100Z 2 45 Split lockwasher med 17 Split lockwasher med 6 stl K900801006000Z 2 6 stl K900801006000Z 2 46 Auxiliary switch 18 Motor circuit switch 4 NO 4 NC KA612R44 1 152 1 1230 5 1 47 Lever KVS01036V1 1 19 Mac
15. 005A1 8 34 Lockwasher 1 4 12 Gasket KP2084A19 1 med stl K900801025000Z 2 13 Machine screw hex hd 1 2 13 x 1 st stl K730115150100A 1 THE FOLLOWING PARTS 14 Washer KP2090A102 1 ARE APPLICABLE TO THE 15 Nut hex 1 2 13 st stl K880215113050A 2 BCT ACCESSORY ONLY 16 Spacer KP3011A132 2 17 Fuse clip KP1091ME1 2 35 Terminal block KP2101A53 3 18 Fuse KP2075A22 2 36 Machine screw rd hd 19 Nut hex 8 32 st stl K880215132008A 2 8 32 x 1 2 brass K721525108050A 3 20 Lockwasher 8 st stl K900815008000A 2 37 Machine screw rd hd 21 Heater assembly for 10 24 x 1 1 8 stl K721501110106A 6 Operator cabinet KVSO125VA 1 38 Lockwasher ext tooth Resistor 500 ohm 10 stl K901101010000Z 6 50 watt IRC K999904310084A 2 39 Hex nut 10 24 stl K881001124010Z 6 Toggle switch DPST K999904250091A 1 40 Panel KP1098VSM 1 Decal KP207VR 1 41 Machine screw rd hd Fuse holder KP2074A1 2 1 4 20 x 1 2 stl K721501125050Z 2 Fuse Type 42 Lockwasher 1 4 split 1A 250V KP2075A2 2 med stl K900801025000Z 2 22 Nut hex 88 32 st stl K880215132008A 2 43 Hex nut 1 4 20 stl K881001120025Z 2 29 VSA12 VSA16 and VSA20 800 Maintenance Instructions 5 4 B 26 Fal 10 5 i 11 iz 8 i 24 1 er 21 Figure 27 Terminal Panel 30 5280 45 5 Terminal Panel Figure 27 Qty Qty Item Catalog per Item Catalog per No Des
16. 00815006000A 4 external tooth stl K901115008000A 2 20 Hex nut 8 32 stl K881015132008A 4 31 VSA12 VSA16 and VSA20 800 Maintenance Instructions Af NN a M ch 2 G d 7 Sa o 2 58 Do 32 5280 45 5 Decals and Labels Figure 28 Qty Qty Item Catalog per Item Catalog per No Description Number Assy No Description Number Assy 1 Nameplate 12KA KP1428VS 1 8 Decal KP1071VS 1 1 Nameplate 16KA KP1289VS 1 9 Decal KP1209VSM 1 Nameplate 20KA KP1430VS 1 10 Decal KP1208VSM 1 2 Machine screw rd hd 11 Decal KP1210VSM 1 6 32 x 3 8 brass K721325106037A 2 12 Label KRWA41V1 1 3 Washer KP2090A39 2 13 Decal KP1164M 1 4 Flatwasher 6 st stl K900215006000A 2 14 Decal KP1165M 1 5 Stop nut elastic KP2020A6 2 15 Manual trip plate KP1242VSM 1 6 Decal KP1373ME 1 16 Self tapping screw 7 Decal KP1071VS 2 i rd hd 1 4 x 3 16 st stl K801715004018A 2 33 Type VSA12 VSA16 and VSA20 800 Maintenance Instructions LEFT SIDE VIEW Figure 29 Operating Mechanism Electrical Parts a 34 5280 45 5 Operating Mechanism Electrical Parts Figure 29 Qty Qty Item Catalog per Item Catalog per No Description Number Assy No Description Number Assy 1 Lever KP1029VS 1 31 Machine screw rd hd 2 Roll pin 3 32 x 3 4 stl K970801043075M 1 10 24 x 5 16
17. 1N3209 TRIP COIL C SURGE CAPACITOR 152 152 CLOSE COIL SOLENOID CH MECHANISM CABINET 152 TRIP CIRCUIT 152 SPRING POSITION 152 MANUAL CLOSE SWITCH FU SP SWITCH 24Vdc MCS FU FUSE BOX 155 20 152 SPRING POSITION 152 CONTACT FOR MANUAL SP SWITCH 240 Vac L LIMIT SWITCH TRIP amp M MOTOR CLOSE MOTOR RESET 1R CONTROL RECEPTACLE CIRCUIT 28 RECLOSER 152 OPERATED SWITCH RECEPTACLE aal MOTOR CIRCUIT 3R AUXILIARY SWITCH 152 b CONTACT TO CLOSE RECEPTACLE bb CLOSING CIRCUIT Figure 20 Location and connection table of control components on operating mechanism 18 5280 45 5 IMULTFRATID ET ESSORY RECEPTACLE 1R HEATERS FUERIS MECH CAE E D 0 HEATERS 5 1 TU De 1 4 4 a a FREE T RECLOSER CONTROL RECEPTACLE 212 AUXILIARY SWITCH RECEPTACLE ACCESSORY Figure 21 Connection diagram for other control components 19 Type VSA12 VSA16 and VSA20 800 Maintenance Instructions Figure 22 ELECTROMIC CONTROL 24 va MOTOR CLOS BG CIRCUIT COBMET HEATERS TRIP CIRC UIT c LOI CIRC UIT en TO mc m en na E zm pa en TO 14 TY PE FFH Rz ENCLOSURE HEATERS ZAMP TY PE FRH FE Schematic diagram of recloser circuits
18. RING 83568KMA Figure 13 Removal of external trip pullring 11 Type VSA12 VSA16 and VSA20 800 Maintenance Instructions 9 Disconnect external quick close pull hook by remov ing attaching stop nut Figure 14 SPACER STOP NUT MANUAL CLOSE LEVER EXTERNAL QUICK CLOSE a E PULLRING 1 Figure 14 Attachment of external quick close pullring 83562KMA 10 Remove two inch hex nuts and lockwashers from top of mechanism channel 11 Remove 7 inch hex nut lockwasher attaching bottom of channel to cabinet 12 Remove 7 inch hex head bolt and lockwasher attach ing top of mechanism channel 13 Maneuver complete mechanism assembly out of operator cabinet Mechanism Installation Installation of the operating mechanism is essentially the reverse of disassembly however two adjustments must be made after the mechanism is installed External Quick Close pullring adjustment The stop nut that secures the external quick close pullring must be adjusted to prevent over travel of the manual close lever assembly refer to Figure 14 1 From under the mechanism housing pull quick close lever down until linkage comes to its mechanical stop 2 Adjust stop nut until the top edge of the manual close lever just contacts the spacer Anti bounce latch adjustment The anti bounce latch assembly must be properly adjusted to operate properly refer to Figure 15 1 Loosen operating bar turn
19. Reclosers 441 cooper power SYSTEMS DUS AES Type VSA12 VSA16 and VSA20 800 Maintenance Instructions Service Information 9280 45 5 3 Figure 1 901035 KYLE Type VSA Recloser CONTENTS Safety 2 MOTOT m 13 Introduction eure ee terere tenere 2 Gear Reduction Unit esses 13 Description and Operation 3 Electrical Components 14 Specifications and 4 Sensing Current Transformers Tests 14 Maintenance neri eg 5 Control Cable 16 Frequency of Maintenance 5 Control Circuit 16 Periodic 5 Service Parts 21 Manual 7 Bushings and Interrupters Figure 23 22 To Close the 7 Interrupter Cabinet Figure 24 24 To Open the
20. S 12 bronze K880233116037A 12 42 Elastic stop nut KP2020A3 6 14 Connector current 43 Transfer rod and exchange and bracket stop assembly KA170VS 3 assembly Includes 44 Stop KP1396VS 3 items 15 thru 25 KA186VS 3 45 Washer KP2090A109 3 15 Machine screw hex 46 Bushing KP1288VS 3 hd 3 8 16 x 1 1 4 47 Retaining ring KP2013A22 3 bronze K730133137125A 2 48 Bracket KP1395VS 1 16 Lockwasher 3 8 49 Spacer KP3013A27 12 med stl K900801037000Z 2 50 Lockwasher 1 4 17 Stationary clamping med K900801025000Z 12 block KA177VS 1 51 Nut hex 1 4 20 K880201120025Q 12 18 Bottom plate KA1005VS 2 52 Sensing current 19 Stationary bracket KA1178VS 1 transformer 20 Roll pin 3 16 x 1 2 stl K970815187050A 2 VSA12 VSA16 21 Machine screw hex 1000 1 ratio KA930M 1 3 hd 1 2 13 x 1 bronze K730133150100A 1 VSA20 800 22 Lockwasher 1 2 med 2000 1 ratio KA930M 2 3 bronze K900830050000A 1 53 Plate KP1163M 9 23 Machine screw hex 54 Cap screw hex hd hd 1 4 20 x 1 1 2 stl K730101125150Q 4 1 4 20 x 3 4 stl K730101125100Q 12 24 Washer 1 4 med stl K900201025000Z 4 55 Lockwasher med 25 Elastic stop nut 1 4 stl K900801025000Z 12 1 4 20 stl KP2020A3 4 56 Flat washer 1 4 stl K900201025000Z 12 26 Stringer assembly KA254VS 6 57 Threaded Spacer KP3008A62 12 27 Machine screw hex 58 Spacer KP3013A27 12 hd 3 8 16 x 3 4 stl K730101137075Z 6 59 Nyliner KP2332A 3 28 Lockwasher 3 8 stl K900801037000Z 6 23 VSA12 VSA16 and VSA20 800 Maintenanc
21. acuum inter rupters a Locate the scribe mark on the moving contact rod at the top of the interrupter See Figure 4 911063KMA Figure 4 Interrupter contact wear inspection b If the scribe mark falls below the top of the upper support plate when the interrupter is closed the interrupter has reached the end of its useful life and must be replaced See Vacuum Interrupters for replacement procedure 8 Check the electrical operation of the recloser a Reinstall the fused pullout switch to energize the motor circuit f this recloser has been manually tripped while the motor circuit was de energized SPRINGS DIS CHARGED the motor will run to charge the clos ing springs SPRINGS CHARGED b Momentarily apply 24 Vdc to terminals A and E of the control terminal board mounted vertically along the left edge of the panel board The recloser will close and the motor will run to recharge the closing springs for the next closing operation c Momentarily apply 24 Vdc to terminals A and C of the control terminal board The recloser will trip open d Electrically open and close the recloser several times to check its operation leave in the open position 9 Check operation of recloser with its control Checkout procedures for a recloser with a control and for the control only are described in the applicable con trol installation manual Form 3A electronic recloser
22. and 2 but fails the open contacts test Test 3 a deteriorated vacuum in one or more of the inter rupters is most likely the cause Retest each vacuum interrupter individually to determine the failed phase or phases and replace the interrupter s Retest to confirm the repair 2 If the recloser fails the closed contacts tests Tests 1 and 2 the cause is likely to be a diminished electrical clearance or a failed insulation After correcting the problem retest to confirm the repair 5280 45 5 SHOP MAINTENANCE INSTRUCTIONS The operations described in this section should be per formed under the cleanest conditions possible No spe cial tools are required for any of the repair procedures Bushings Bushing maintenance generally consists of a thorough cleaning and a careful examination for chips cracks or other physical damage during the periodic maintenance inspection Bushing porcelain must be replaced whenever damage is discovered The porcelain can be replaced without removing the bushing assembly from the recloser To replace bushing porcelain proceed as follows refer to Figure 8 1 Unscrew the bushing terminal discard the terminal gasket lt BUSHING Pers TERMINAL a 94 TERMINAL 42 y BUSHING GASKET CLAMPS T BUSHING lt SPLIT PORCELAIN RING LOWER GASKET ROLL PIN 4 BUSHING ROD Figure 8 Bushing porcelain replacement 2 Remove the three hexnuts and bushin
23. buckle 2 Adjust turnbuckle to provide a inch gap between operating bar roll pin and the anti bounce latch 3 Secure turnbuckle ANTI BOUNCE LATCH ASSEMBLY OPERATING BAR TURNBUCKLE ASSEMBLY ROLL PIN Figure 15 Anti bounce latch adjustment 12 5280 45 5 Motor CAUTION This type of motor should NEVER be energized while disconnected from gear reduction unit Uncontrolled motor speed will result when operat ed without load excessive speed will damage motor A universal series type motor is used to charge the closing springs The motor is energized from either a 240 or 120 Vac auxiliary power source through a fused pullout switch The motor has permanently lubricated sealed ball bearings that require no service Periodically check motor brushes for wear or burning replace as required NOTE Brush replacement kits are available for both the 240 Vac and 120 Vac motors The kit consists of two brush es and two brush caps Motor Replacement The universal drive motor must be replaced as an assembly if it become damaged or worn To replace the motor proceed as follows refer to Figure 16 CAUTION Do not attempt to replace the drive motor while recloser contacts are closed or while operator springs are charged If the operator assembly were to trip while hands are within operating linkage personal injury could result 1 Remove fused pullout switch to de ene
24. cription Number Assy No Description Number Assy 1 Terminal strip KP2101A56 1 21 Fuse box 2261 1 1 2 Machine screw rd hd 22 Machine screw rd hd 6 32 x 5 8 stl K721515106062A 2 10 24 x 1 3 8 K721515110137Q 2 3 Lockwasher 6 23 Tapping block KP1287VS 1 external tooth stl K901115006000A 2 24 Strap KP1286VS 1 4 Hex nut 6 32 stl K881015132006A 4 25 Machine screw rd hd 5 Marker strip KP2076A51 1 10 24 x 5 8 K721515110063A 1 6 Marker strip KP2101A256 1 26 Lockwasher 10 stl K900815010000A 2 7 Capacitor assembly KA256VS 1 27 Fuse Bussmann 8 Capacitor KA158CE 3 Type FRN R2 KP2075A22 2 9 Silicon diode KP4011A9 3 28 Panel Board KP1077VSM 1 10 Resistor KP4022A31 3 29 Spacer KP3013A23 3 11 Rivet 0 146 x 9 32 6 K930801014028Z 6 30 Spacer KP3010A4 1 12 Flat washer 6 brass K900525014031A 6 31 Hex nut 10 24 brass K881025124010A 4 13 Bracket and socket 32 Lockwasher 10 assembly KA189VSM2 1 med brass K900830010000A 4 14 Machine screw rd hd 33 Flat washer 10 brass K900525020043A 4 10 24 x 3 8 stl K721515110037A 1 34 Control cable assembly KA106VS 1 15 Lockwasher 10 35 Terminal block KP2101A27 1 external tooth stl K901115010000A 2 36 Label KP1144VSM 1 16 Hex nut 10 24 stl K881015124010A 2 37 Cable receptacle KP2056A5 1 17 Capacitor assembly KA964M11 1 38 Screw self tapping 18 Machine screw rd hd 6 32 x 3 8 K751515106037A 4 8 32 x 3 8 stl K721515108037A 2 39 Lock washer 6 19 Lockwasher 8 medium stl K9
25. during loss of motor power and with the closing springs discharged A hand crank can be applied to the motor to charge the closing springs Once charged the closing springs can be released either from inside or from below the operator mechanism cabinet As with electrical operations the opening springs are charged by release of the closing springs so even a manually closed unit has energy stored for a trip operation Major parts and assemblies of the VSA recloser are shown in Figures 2 and 3 Being aware of the location of these components and their part in the operation of the recloser will give a quicker and clearer understanding of the recloser maintenance and repair procedures that fol low 911061 Type VSA12 VSA16 and VSA20 800 Maintenance Instructions CONTACT POSITION INDICATOR DRIVE MOTOR SPRING CHARGE INDICATOR MANUAL CLOSE LEVER MANUAL CLOSE LEVER Figure 3 Operating mechanism AUXILIARY SWITCH ACCESSORY TRIP RESET KNOB OPERATION COUNTER OPERATOR CABINET HEATER MULTI RATIO CURRENT TRANSFORMER TERMINAL BOARD ACCESSORY MANUAL TRIP LEVER 901038KMA SPECIFICATIONS AND RATINGS The recloser will interrupt fault currents only when applied within its specified ratings Consult the following ratings and compare to system characteristics at point of application prior to installation Table 1 Voltage Ratings
26. e operation reclosers must be maintained when they have operated the equivalent of a rated duty cycle see Table 2 In the absence of specific operating experience the following procedures are recommended When the type VSA recloser is operated under usual service conditions as defined in ANSI American National Standards Institute C37 60 Standard Requirements for Overhead Pad Mounted Dry Vault and Submersible Automatic Circuit Reclosers and Fault Interrupters for AC Systems it is recommend ed that the following maintenance procedures be per formed at the completion of an equivalent duty cycle NOTE ANSI C37 61 Guide for the Application Operation and Maintenance of Automatic Circuit Reclosers gives a procedure for converting the rated standard duty cycle into an equivalent duty cycle based on the actual operating duty of the recloser However if the recloser has not completed an equiv alent duty cycle within THREE YEARS it is recom mended that an inspection be made at that time See Steps one through ten of Periodic Maintenance Inspection Periodic Maintenance Inspection Each maintenance inspection at the completion of an equivalent duty cycle should include at least the follow ing 1 Bypass and remove the recloser from service a Disconnect the control cable from the recloser b Remove the fused pullout switch to de energize the 240 Vac power source to the operator mecha nism 2 Visually insp
27. e Instructions Figure 24 Interrupter Cabinet 24 5280 45 5 Interrupter Cabinet Figure 24 Qty Qty Item Catalog per Item Catalog per No Description Number Assy No Description Number Assy 1 Interrupter cabinet 11 Washer 3 8 st stl K900215037000A 16 cover KA281VS 1 12 Lock washer 3 8 2 Enclosure KA177VS 1 external tooth K901101037000Z 16 3 Rear cover support KA178VS 1 13 Heater guard KP1173CE 2 4 Cover and operating 14 Resistor 1000 ohms KP287VR 2 cabinet support KA179VS 1 15 Bracket KP255NR 4 5 Side panel KA180VS900 2 16 Machine screw rd hd 6 Ventilating screen plug KP2204A1 2 8 32 x 7 16 st stl K721515108043A 12 7 Speed nut KP2005A4 24 17 Lockwasher 8 med 8 Screw self tapping st stl K900815008000A 12 14 x 3 4 st stl K801715014075A 24 18 Washer 10 brass K900525020043A 8 9 Machine screw hex 19 Nut hex 8 32 st stl K880215132008A 12 hd 3 8 16 X1 st stl K730115137100A 16 20 Nylo Clip KP2006A1 4 10 Hex nut 3 8 16 K880201116037Q 16 21 Washer 1 4 st stl K900215026050A 24 25 VSA12 VSA16 and VSA20 800 Maintenance Instructions Figure 25 Operating Linkage Assembly 26 5280 45 5 Operating Linkage Assembly Figure 25 Qty Qty Item Catalog per Item Catalog per No Description Number Assy No Description Number Assy 1 Connector and rod 9 Spacer KP3011A133 3 assembly KA223VS3 1 10 Link KP1400VS
28. ecific tasks and procedures are located through out the manual i CAUTION At voltages up to 37 5 kv rms and 50 kv dc the radiation emitted by the vacuum inter rupter is negligible However above 37 5 kV rms or 50 kV dc radiation injurious to personnel may be emitted See Radiation Warning in Service Information S280 90 1 for further details CAUTION Follow all locally approved safety practices when lifting and mounting the equip ment Use the lifting lugs provided Lift the load smooth ly and do not allow the load to shift Improper lifting may result in equipment damage WARNING This equipment is not intended to protect human life Follow all locally approved pro cedures and safety practices when installing or operat ing this equipment Failure to comply may result in death severe personal injury and or equipment dam age WARNING High voltage Contact with high volt age will cause severe personal injury or death Follow all locally approved safety procedures when working around high voltage lines and equipment WARNING Before installing operating main taining or testing this equipment carefully read and understand the contents of this manual Improper operation handling or maintenance can result in death severe personal injury and equipment damage Additional Information These instructions do not claim to cover all details or variations in the equipment
29. ect external components a Check for broken or cracked bushings replace as necessary See Shop Maintenance Instruc tions Bushings for procedure b Check for paint scratches and other mechanical damage touch up to inhibit corrosion 3 Visually inspect the operator mechanism a Check interior of the operator mechanism cabinet for accumulation of dust and dirt clean as neces sary b Check door gasket for effectiveness of seal repair or replace as required c Visually inspect all components for worn or broken parts and corrosion replace as necessary d Check for broken or loose wiring terminals at the various components and terminal boards CAUTION Do not use excessive force when replacing brush holder caps excessive tightening may crack the caps e Check the motor brushes for excessive wear and burning replace as needed f Record counter reading in the record log Type VSA12 VSA16 and VSA20 800 Maintenance Instructions 4 Close and trip the recloser manually several times to check mechanical operation See Manual Opera tion To Close the Recloser for manual operating instructions 5 Perform a dielectric withstand test to check the insu lation level of the recloser and the vacuum integrity of the interrupters See Insulation Level Withstand Tests for procedure 6 Remove cabinet side panels to expose the internal components 7 Check the contact erosion of the v
30. g clamps that secure the bushing to the recloser housing 3 Remove and discard the lower bushing gasket 4 Twist off the split aluminum ring from the old bushing and install on the new bushing porcelain if it is still in good condition replace if damaged 5 Install a new lower bushing gasket and slide the new bushing porcelain into the recloser housing over the bushing rod Make sure that the roll pin is seated in the locking groove in the top of the bushing 6 Position the clamping ring with the split centered between two clamp bolts 7 Install bushing clamp hardware and tighten nuts evenly a little at a time to 6 10 ft lbs torque CAUTION Dielectric failure bushing damage To prevent gasket leaks or bushing damage clamping force must be applied gradually and equally in rotation to each bolt If the clamping force is not evenly applied seal leakage may result compromising the dielectric capabilities of the recloser Unequal clamping force may cause bushing breakage A 71199 Bushing damage Do not reuse the split aluminum ring if damaged The clamping ring cushions and distributes the pressure between the bushing flange and the bushing clamps DO NOT OMIT If bushing clamps are assembled without the clamping ring the bushing may be damaged when clamp hardware is tightened 8 Apply a very small amount of petroleum jelly to the knurled inside surface of the bushing terminal 9 Install a
31. he MANUAL CLOSE lever on the operating mechanism or pull the external MANUAL CLOSE pullring to release the charged springs close the recloser NOTE Immediately upon closing the motor will operate to again charge the closing springs If motor operating power is not available the closing springs may be charged by manually cranking the mech anism until the closing springs status indicator reads SPRINGS CHARGED 1 Remove bolt and seal assembly from hole in right side of cabinet 2 Insert manual crank shaft through the cabinet wall and onto the shaft protruding from the mechanism Figure 7 Nb MANUAL MANUAL CLOSE TRIP Figure 6 Manual operation pullrings 911060KMA 3 Crank the motor in a COUNTERCLOCKWISE direc tion until the spring status indicator reads SPRINGS CHARGED Approximately 150 revolutions are required Figure 7 Manually charging closing springs 901040KMA To Open Recloser To release the opening spring either pull down the TRIP RESET knob on the front of the operator mechanism or the PULL TO OPEN pullring under the cabinet Return knob or pullring to the RESET position after the unit has tripped to enable the electronic closing circuit Type VSA12 VSA16 and VSA20 800 Maintenance Instructions INSULATION LEVEL WITHSTAND TESTS High potential withstand tests provide information on the dielectric condition of the recloser and the vacuum integrity
32. hine screw rd hd 48 Roll pin 3 32 x 3 4 stl K970801093075M 1 6 32 x 7 8 stl K721501106087Z 2 49 Spacer KP3009A90 2 20 Split lockwasher med 50 Machine screw rd hd 6 stl K900801006000Z 2 10 24 x 3 3 4 stl K721501110375Z 2 21 Terminal strip KP2101A1 1 51 Split lockwasher med 22 Machine screw rd hd 10 stl K900801010000Z 2 86 32 x 1 2 stl K721501106050Z 2 52 Spacer KP1020VS 2 23 Split lockwasher med 53 Machine screw flt hd 6 stl K900801006000Z 2 10 24 x 7 8 stl K721601110082Z 2 24 Closing solenoid 54 Terminal strip KP2101A18 1 152 CC KA169VSM1 1 55 Marker strip KP2101A218 1 25 Solenoid stop KP1163VSM 1 56 Machine screw rd hd 26 Machine screw rd hd 10 24 x 5 8 stl K721501110062Z 2 10 24 x 3 4 stl K721501110075Z 1 57 Split lockwasher med 27 Split lockwasher med 3110 stl K900801010000Z 2 10 stl K900801010000Z 1 58 Hex nut 10 24 stl K881001124010Z 2 28 Spacer KP3006A1 1 59 Bracket KP1099VSM 1 29 Machine screw rd hd 60 Hex nut 8 32 stl K881001132008Z 2 10 24 x 3 8 stl K721501110037Z 2 61 Split lockwasher med 30 Split lockwasher med 8 stl K900801008000Z 2 10 stl K900801010000Z 2 62 Plain washer 8 stl K900201008000Z 2 35 Type VSA12 VSA16 and VSA20 800 Maintenance Instructions 7 1 Figure 30 Operator Mechanism Mechanical Parts 36 5280 45 5 Operator Mechanism Mechanical Parts Figure 30 Qty Qty Item Catalog per Item Catalog per No Descriptio
33. n Oil impreg nated bronze bearings provide long wear life Inspect all gear teeth and bearings carefully disassemble the unit only when part replacement is necessary 13 Type VSA12 VSA16 and VSA20 800 Maintenance Instructions ELECTRICAL COMPONENTS Electrical circuit components of the operating mecha nism require no maintenance and should provide trouble free operation If control circuit malfunction is indicated check out the circuitry in the following order 1 Substitute another electronic control known to be in working order Follow the procedures in the electronic control service manual to test and repair the control 2 Check the control cable for breaks or shorts 3 Check the circuit components in the operating mech anism Sensing Current Transformer Tests The sensing transformers can be tested using the cir cuits shown in Figure 17 Connect all three phases of the recloser in series across a 100 ampere ac test supply and close the recloser with the manual closing crank WARNING High voltage Contact with high volt age will cause serious personal injury or death When checking the CT output of one phase be sure that the CT s on the other two phases are shorted or use three milliammeters to load all three phases at one time Energizing the primary without shorting the CT secondary may cause dangerous voltages to be gener ate in the CT Secondary Ratio Test for Sensing Current Tra
34. n Number Assy No Description Number Assy 1 External trip pullring KP1240VSM2 1 28 Coupling KP1278VSM 1 2 Cotter pin 1 16 x 1 29 Reset knob KP2069A6 1 brass K970525062100A 1 30 Split lockwasher 1 4 3 Elastic stop nut stl K900801025000Z 1 1110 24 KP2020A13 1 31 Plain washer 14 4 External quick close brass K900525026056A 2 pull hook KA186VSM3 1 32 Spacer KP3007A75 1 5 Plain washer special KP2028A53 1 33 Front plate KP1165VSM 1 6 Spring KP157VR 1 34 Machine screw rd hd 7 Spacer KP3007A18 1 6 32 x 5 16 stl K721501106031Z 4 8 Operating link KP724D 1 35 Split lockwasher med 9 Retaining ring Type 6 stl K900801006000Z 4 C 1 4 stl WA514 K970901250000M 3 36 Pull link KP1241VSM 1 10 Pin KP1205VSM 1 37 Rod and pin assembly KA143VSM 1 11 Retaining ring Type C 38 Retaining ring Type E 3 8 stl WA518 K970901375000M 1 1 4 stl K971001125000Z 1 12 Spacer KP3011A54 2 39 Machine screw hex hd 13 Lever KP1187VSM 1 10 24 x 1 stl K722401110100Z 1 14 Pin KP1188VSM 1 40 Split lockwasher med 15 Closing spring 10 stl 8010100002 1 assembly KA107VSM2 1 41 Spacer KP3005A9 1 16 Toggle Spring KP40GS 1 42 Plain washer 10 17 Hex nut 1 2 13 stl K881001113050Q 1 brass K900525020043A 1 18 Split lockwasher med 43 Clutch assembly KA185VSM 1 1 2 st stl K900815050000A 1 44 Plate assembly 119 51 1 19 Motor and adapter 45 Hex nut 1 4 20 stl K880201120025Q 4 plate assy 240 Vac KA248VSM 1 46 Split lockwasher med I9A Brush
35. new terminal gasket and the bushing termi nal tighten to 35 ft lbs torque Vacuum Interrupters Vacuum interrupters must be replaced when They lose their vacuum as evidenced by a failure during the low frequency dielectric withstand test across the open contacts or The interrupter contacts have eroded beyond their useful life as evidenced by the position of the scribe mark on the moving contact rod To replace an interrupter refer to Figure 9 and proceed as follows 1 Remove fused pullout switch to de energize AC power source to operator mechanism 2 Make sure recloser contacts are open manually operate mechanism until contact position indicator reads OPEN and closing spring status indicator reads SPRINGS DISCHARGED 3 Remove nylon hardware or wire tie securing insulat ing barrier to stringers remove insulating barrier 4 Remove hardware and clamp that secure long bush ing rod to lower interrupter support bracket 5 Loosen bolts that secure upper interrupter clamp As clamp is loosened atmospheric pressure acting on the bellows will cause the contact rod to move down into interrupter This action can be verified by observ ing the scribe mark on the contact rod It should move down toward contact rod support plate when clamp is loosened Type VSA12 VSA16 and VSA20 800 Maintenance Instructions Pod STRINGER NYLON SHORT HARDWARE BUSHING LEAD UPPER INTERRUPTER 1 CLAMP LONG
36. nsformers Refer to Figure 17 Ratio Test Circuit A 1 Energize 100 ampere test source 2 Check current through control cable receptacle sock ets K G Phase A K H Phase B and K J Phase C For each sensing bushing CT checked the mil liammeter should indicate 100 milliamperes mA 50 mA when testing 2000 1 ratio CTs plus or minus ten percent 3 A 100 mA reading verifies the 1000 1 ratio a 50 mA reading verifies the 2000 1 ratio of each current transformer Be sure to allow for tolerances of meter ing equipment De energize test source and proceed with polarity test Polarity Test Refer to Figure 17 Polarity Test Circuit B 1 Connect sockets G H and J of the control cable receptacle in series with jumper leads as indicated in Figure 18 The jumper leads connect the secondaries of the current transformers in parallel so that total output current measured at points K and J should be 300 mA 150mA when testing 2000 1 ratio CTs 2 Energize the 100 ampere test source A 300 mA reading 150mA when testing 2000 1 ratio CTs indi cates correct polarity for all three sensing transform ers If the meter across K and J reads only 100 mA 50 mA when testing 2000 1 ratio CTs the polarity of one of the transformers is reversed Check for uni form location of the polarity marks on all three trans formers reposition as necessary 3 De energize ac test current and remove jumper wires from receptacle sockets
37. price and availability 21 Type VSA12 VSA16 and VSA20 800 Maintenance Instructions Figure 23 Bushings and Interrupters 22 5280 45 5 Bushings and Interrupter Figure 23 Qty Qty Item Catalog per Item Catalog per No Description Number Assy No Description Number Assy Bushing assembly 29 Elastic stop nut KP2020A21 6 long lead items 1 30 Washer 3 8 stl K900201037000Z 7 thru 4 3 31 Vacuum interrupter Bushing assembly SA12 KA717VS1 3 short lead items 1 VSA16 KA717VS4 3 3 3 VSA20 800 KA717VS5 3 1 Bushing terminal 32 Insulating barrier KP1180VS 3 assembly KA112VSML 6 33 Barrier panel KP1300VS 3 2 Upper bushing gasket KP2090A57 6 34 Cable clip KP2006A10 12 3 Ceramic bushing KP1039VS 6 Wire tie used in place 4 Bushing rod long KA111VSML2 3 of cable clip above K994904170001A 12 5 Bushing rod short KA111VSML5 3 35 Machine screw rd 6 Bushing clamping ring KP1066VS1 6 hd 10 32 x 5 8 7 Lower bushing gasket KP2090A9 6 nylon K721584310062A 12 8 Bushing clamp KP1252VS 18 36 Hex nut 10 32 9 Hex nut 3 8 16 stl K880215116087A 18 nylon K821054132010A 12 10 Bushing rod clamp KP1136VS3 6 37 Machine screw hex 11 Cap screw 3 8 16 x 2 hd 1 4 20 x 3 stl K730101125300Q 6 bronze K730133137200A 12 38 Washer KP1197VS 6 12 Lockwasher med 39 Belleville washer KP2183A3 24 3 8 bronze K900833037000A 12 40 Transfer bar KP1196VS 6 13 Hex nut 3 8 16 41 Spherical disc KP1195V
38. rgize AC power source to operator mechanism 2 Make sure recloser contacts are open manually operate mechanism until contact position indicator reads OPEN and closing spring status indicator reads SPRINGS DISCHARGED Cut motor leads close to old motor A Remove hardware securing motor and carefully remove from operator assembly Position replacement motor into operator assembly engage motor shaft into coupling secure with hard ware removed Apply Loctite 4242 blue to screw threads prior to assembly Trim motor leads leave sufficient length to splice new motor leads to old motor leads 7 Slide shrink tube over motor leads splice and solder leads Shrink tubes over joints 8 Install fused pullout switch to energize AC power source MOTOR LEADS Figure 16 Motor replacement 911059KMA Brush Replacement 1 Remove brush caps and carefully pull old brushes from motor 2 Install new brushes with cove positioned to cup over the commutator CAUTION Do not use excessive force when replacing brush holder caps excessive tightening may crack the caps 3 Install brush caps to secure Gear Reduction Unit The pinion gear at the opposite end of the motor shaft coupling engages a gear reduction train consisting of a first and second intermediate gear and the main gear All gears are permanently lubricated to provide mainte nance free operation and prevent corrosio
39. tall washers and locknuts to secure lower current exchange plate to stringers 11 Loosen tension bolt to relieve opening spring tension Figure 10 12 Manually close recloser 13 Tighten top and bottom contact rod clamp hardware to 20 22 ft lbs torque 14 Tighten tension bolt to re apply tension to opening spring Figure 10 OPENING SPRINGS Figure 10 Opening spring tension bolt 15 Install clamp and hardware to secure long bushing lead to lower current exchange assembly and tighten 16 Manually trip and close recloser several times to check operation 17 Install insulating barrier and secure with nylon hard ware or wire ties as applicable 18 Perform Insulation Level Withstand Test see page 8 19 Install fused pullout switch to energize AC power source to operator mechanism 10 5280 45 5 Operating Mechanism The spring operated mechanism uses solenoids to release charged opening and closing springs The clos ing springs are charged by a motor gear reduction drive The closing operation charges the opening springs The upper portion of the operating mechanism in the operator cabinet incorporates the tripping mechanism which includes the trip solenoid mechanical linkages and associated switches The lower portion of the mech anism incorporates the closing mechanism which includes the close solenoid motor gear reduction drive clutch closing springs mechanical linkages and associ
40. tected on any phase or phases the recloser control initiates a trip sig nal which energizes a solenoid in the operating mecha nism of the recloser When actuated this solenoid trips the opening springs which opens the interrupter con tacts Closing springs provide the force required to close the vacuum interrupters as well as the force required to charge the opening springs A 240 Vac motor charges the closing springs through a multi stage gear drive When 240 Vac is present the motor is automatically operated to keep the closing springs in a charged state To close the recloser the control initiates a signal which energizes a solenoid in the recloser operating mecha nism Once actuated the solenoid releases the closing springs which close the vacuum interrupters and charge Figure 2 Type VSA Recloser with side panels removed the opening springs Therefore a sequence of Open Close Open is available after loss of 240 Vdc power An external 240 Vac source is required to operate the drive motor A battery in the electronic control supplies the 24 Vdc tripping and closing power Recloser tripping employs stored spring energy The stored spring energy is released to open the recloser when the trip solenoid is actuated by the 24 Vdc trip sig nal The 24 Vdc trip signal is originated at the recloser control The 240 Vac supply is not required to trip the recloser A totally manual closing operation can be accomplished even
41. with hardware removed 6 Trim CT leads as required Slide shrink tube over each lead splice connection and solder Slide shrink tube over splice and apply heat to shrink When splic ing connections refer to previous labeling to assure proper leads are connected before soldering 7 Install bushing assembly 8 Perform the ratio and polarity tests after replacement of any sensing CT to make sure they are properly installed Control Cable Check With the cable removed at the control use an ohm meter to check the continuity of each circuit through the con nection at the operator cabinet up to the control terminal block The connector pin sockets and the control terminal block are lettered correspondingly Remove and replace each conductor at the control terminal block while check ing A zero reading will indicate continuity an infinite reading indicates an open circuit Continuity between ter minals and unlike pin socket indicates a shorted circuit Replace if cable is damaged Control Circuit Components The operating sequence of the various circuit compo nents is diagrammed in Figure 19 See Figures 20 and 21 for connection diagrams and wiring tables A schematic diagram of recloser circuits is shown in Figure 22 16 5280 45 5 MANUAL CLOSE SWITCH 1 152 MCS OPEN CLOSED SPRING POSITION SWITCH 240 Vac OPEN 2 152 SP2 CLOSED CAM OPERATED OPEN SWITCH
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