S Fault Interrupters. Type CI; Three-Phase Maintenance Instructions. Service Information

Transcription

1 NOTICE: This bulletin is also applicable to Kyle product serial numbers beginning with the prefix CP57. Fault Interrupters Type CI; Three-Phase Maintenance Instructions Serial No and above CONTENTS Introduction Description Duty Cycle Maintenance Frequency of Maintenance Periodic Maintenance Inspection Insulation Level Withstand Tests Shop Maintenance Procedures Leak Testing Tank Untanking Tanking Interrupter Replacement Aperseal Cable Seals Electronic Trip Control Testing CT Protectlon Board Test Procedure Testing in Place Bench Testing Operating Procedures Mechanical Operation Check Electrical Operation Check Manual Closing Manual Tripping In-Service Operation Initial Operation Automatic Operation Schematic Diagrams Service Parts List RADIATION WARNING: Before performing electrical tests on Type CI fault interrupters, refer to Service Information S , Vacuum Interrupters Radiation Warning. Figure 1. Type CI fault interrupter, 200 amp version. S Service Information 87863KMA INTRODUCTION Service Information S provides maintenance instructions for the Type Cl three-phase fault interrupter. Included is a general description of the interrupter and control, and their operation. A service parts list, keyed to exploded-view drawings of the interrupter, is included at the back of the manual. DESCRIPTION The Type Cl fault interrupter (Figure 1) is an automatic, nonreclosing, three-phase interrupting device that will interrupt currents through amps symmetrical on systems rated through 38 kv. A compact, lightweight device, the Type Cl features submersible construction, a stored-energy mechanism, and dry, solid insulated vacuum interrupters. Line currents are sensed by 1000:1 ratio encapsulated bushing current transformers on each phase on the interrupter. This provides a continuous measurement of phase and ground current, which is monitored by the Electronic Trip Control. When the selected minimum-trip current value is exceeded, and after a time delay, the control sends a trip signal to the interrupter operating mechanism. Control operating power is also obtained from the BCT s; thus no external power is required for timing or trip functions. The control is easily programmed for various minimum trip values and time-current characteristics on both phase and ground. The integral galvanized-steel mounting frame with predrilled mounting holes facilitates wall, floor, or ceiling mounting. The electronic control, enclosed in a weatherproof (nonsubmersible) cabinet and connected to the interrupter through two shielded plug-in cables, can be mounted on either side of the interrupter frame or at a remote location up to 100 feet away. High-voltage connections are made to either 200 amp universal bushing wells or 600 amp bushings depending on the continuous current rating of the unit selected. Both are molded as an integral part of the solid insulation system, and they interface with industry-standard 200 amp loadbreak and nonloadbreak bushing plug inserts or 600 amp shielded cable connectors. 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. December 1987 New Issue 1

2 Interrupter contact opening and closing is through release of stored-spring energy. Both the opening and closing springs are charged by a 120 volt ac motor which runs automatically immediately after each opening operation. A push-pull spring charging feature permits manual spring charging should motor power be lost. In addition to automatic tripping on fault current, the Type Cl interrupter can be tripped with a remote contact, with the manual operated switch on the control panel, or with the mechanically-linked trip-reset lever, on the front of the mechanism tank. It can be closed with a remote contact, with the manual control switch on the panel, or with the mechanically-linked close lever at the front of the tank. DUTY CYCLE Percent of Number of Rated Max. Interrupter Minimum Unit Voltage Rating X/R Operations kV Total kV Total kV Total 232 Fault Interrupters for AC Systems, it is recommended that the following maintenance procedures must be performed yearly, or at the completion of an equivalent duty cycle. However, in the absence of specific operating experience, it is recommended that an external inspection be made on a yearly basis. (See Maintenance Procedure below.) Periodic Maintenance Inspection Each periodic maintenance inspection, done at the completion of an equivalent duty cycle, should include: 1. Bypass and remove interrupter from service. 2. Inspect external components. A. Check for broken or cracked interrupters. Replace as necessary. B. Check for scratched paint, repaint as needed. C. Note counter reading and enter in the record log. 3. Perform an insulation level withstand test. 4. Remove tank to expose internal components. 5. Oil fills the cavity around the moving contact operator rod. If oil or oil residue is observed within the tank, carefully inspect the base of each interrupter to determine the source of the leak. If an interrupter is leaking, it should be returned to the factory for repair. 6. Clean internal components. CAUTION Never use volatile solutions, detergents, or water-soluble cleaners. 7. Check contact erosion of the vacuum interrupters. With the contacts closed the dimension between the support plate and boss, see Figure 2, should not exceed 5/8". MAINTENANCE Frequency of Maintenance Because interrupters are applied under widely varying operating and climatic conditions, maintenance intervals are best determined by the user based on actual operating experience. To assure proper operation, interrupters must be maintained when they have operated the equivalent of a complete duty cycle and before the dielectric strength has deteriorated below prescribed levels. In the absence of specific operating experience, the following procedures are recommended. When Type Cl interrupters are operated under usual service conditions as defined in ANSI (American National Standards Institute) C37.60, `Requirements for overhead, Pad Mounted, Dry Vault, and Submersible Automatic Circuit Reclosers and Figure 2. Measuring erosion of interrupter contacts. 2

3 S Check circuit components attached to the operating mechanism. A. Check condition of wiring to terminal strips and make sure all connections are tight. B. Check condition and operation of all microswitches and trip solenoids. C. Check condition of current transformers and the associated wiring, if equipped. 9. Replace tank gasket. Apply quick-set adhesive to position and hold gasket in groove at corners of tank. 10. Check the tightness of all cable connectors and other fastners. 11. Clean gasket seat and retank the interrupter. Replace the head bolts and tighten to ft-lbs. torque. Apply clamping force gradually and equally, in rotation, to each bolt to achieve an evenly distributed gasket sealing pressure. Leak test tank, see procedure page 3. Insulation Level Withstand Tests High-potential withstand tests provide information on the dielectric condition of the interrupter. Testing is performed at 75% of the rated low-frequency withstand voltage. Interrupter Teat Voltage Test Voltage Type BIL (Kv) (Kvac) (Kvdc) 15.5 Kv Kv * 38 Kv 150* 45* 72* *May be limited by cables or terminations. WARNING Proper cable terminators must be used to attach test supply to the interrupter bushing terminals. Use of improper cable terminators can result in flashovers, damage to equipment, serious personal injury or death. TEST 1: Proceed as follows: 1. Manually close interrupter. 2. Ground tank and frame. 3. Connect three upper bushings together. 4. Apply proper test voltage to lower bushings. 5. The interrupter should withstand the test voltage for 60 seconds. TEST 2: Proceed as follows: 1. Manually close interrupter. 2. Ground tank and frame. 3. Ground Phase A and Phase C. 4. Apply proper test voltage to Phase B. 5. The interrupter should withstand the test voltage for 60 seconds. TEST 3: Proceed as follows: 1. Manually open interrupter. 2. Ground tank and frame. 3. Connect and ground three upper bushings. 4. Connect three lower bushings. 5. Apply proper test voltage to lower bushings. 6. The interrupter should withstand the test voltage for 60 seconds. 7. Reverse the connections: ground lower bushings; apply test voltage to upper bushings for 60 seconds. 8. The interrupter should withstand the test voltage for 60 seconds. TEST RESULTS: These high potential withstand tests provide information on the dielectric condition and integrity of the interrupters. A. If the interrupter passes the closed-contacts test (Tests 1 and 2) but fails the open-contacts test (Test 3),a deterioration of one or more of the interrupters is likely to be the cause. Check each interrupter individually to determine the failed phase or phases, and replace the interrupter(s). Retest to confirm the repair. B. If the interrupter fails the closed-contacts tests (Test 1 and 2) the cause is likely to be failed insulation. Replace damaged interrupter and retest. SHOP MAINTENANCE PROCEDURES Leak Testing Tank If the interrupter is installed in an environment where it may be submerged, it should be leak tested after the tank has been removed and replaced, to ensure that all seals are fluid tight. CAUTION Do not pressurize tank assembly to more than 5 psi. Pressures beyond 5 psi can cause permanent damage to the tank assembly and seals. 1. Remove plug, located on mechanism cover assembly. 2. Attach a gas pressure source (nitrogen or clean dry air) to the pressure fitting and slowly increase the pressure to between 4 and 4-1/2, psi. 3. Apply liberal amounts of liquid soap solution to all seams, seals and junctures. Leaks will be evidenced by expanding bubbles. If any leaks are observed, corrective measures must be taken. NOTE: Pressure will escape through the control cable. As a result,the pressure source must be maintained throughout the leak testing. 4. Release pressure, disconnect gas pressure source, and reinstall original plug with fresh sealing tape. Untanking The tank assembly is removable to allow access to the mechanism, and for vacuum interrupter removal. If access to the mechanism is required, the tank can be removed while the interrupter assembly remains in the frame assembly. However, 3

4 if a vacuum interrupter is to be removed, the interrupter assembly must be removed from the bail and frame assembly. NOTE: Removal of the bail and frame assembly(steps 1-4) is only required if a vacuum interrupter is to be removed, refer to Figure Place blocks under tank to support interrupter assembly when frame is removed. 2. Remove lower plate. 3. Remove bail and parking stand assembly. 4. Remove support frames and interrupter support plate. 5. Remove hardware securing trip lever assembly (Figure 4) to tank. Pull lever assembly out of tank. 6. Pull spring charging handle out and insert a wooden block. Remove three screws that secure clamping ring, see Figure 5. Figure 3. Bail and frame assembly removal/installation. 4

5 S Figure 4. Trip lever assembly removal/installation KMA Figure 6. Set screw removal KMA Figure 5. Clamping ring removal/installation KMA Figure 7. Charging handle removal KMA 7. Remove set screw, see Figure Remove charging handle assembly, see Figure 7. WARNING Use a suitable hoist when lifting interrupter assembly. If interrrupter assembly only (without frame) is to be lifted, attach hooks to lifting points located between interrupters and secure sling to center interrupter. If the sling is not secured, the assembly will flip which could cause serious injury or damage to the equipment. CAUTION Carefully lift the mechanism assembly from tank. There is very little clearance between the mechanism assembly and the tank. If the mechanism binds or catches on the tank as it is removed, damage to the mechanism can result. 9. Remove hardware that secures cover assembly to tank and carefully lift assembly out of tank. Carefully guide the mechanism assembly through tank opening. Tanking To retank interrupter proceed as follows: 1. Clean the underside of the cover assembly to ensure a good seal. Install a new tank seal, use quick-set adhesive to position and secure gasket at corners of tank. WARNING Use a suitable hoist when lifting interrupter assembly. If interrupter assembly only (without frame) is to be lifted, attach hooks to lifting points located between interrupters and secure sling to center interrupter. If the sling is not secured, the assembly will flip which could cause serious injury or damage to the equipment. CAUTION Carefully lower the mechanism assembly into tank. There is very little clearance between the mechanism assembly and the tank. If the mechanism binds or catches on the tank as it is removed, damage to the mechanism can result. 5

6 2. Carefully lower interrupter assembly into tank. Guide mechanism into tank to prevent it from catching as it enters. Install hardware and tighten to ft-lbs torque. 3. Install two new o-rings on the trip lever shaft and lubricate it with a little grease (SWS-290). Install shaft assembly through tank and engage with mechanism main shaft. Install hex cap screws and lockwashers (Figure 4). 4. Place a few drops of Loctite 242 on threads of charging handle extension, install extension and tighten securely. 5. Place a few drops of Loctite 242 on set screw and install, see Figure 8. Figure 8. Set screw installation. 6. Install clamping ring, secure with screws previously removed, see Figure KMA NOTE: If the bail and frame assembly were removed, continue with the following steps. Refer to Figure 3 for bail and frame assembly item references. 7. Install support frames and interrupter support plate. 8. Install bail and parking stand assembly. 9. Install lower plate. Interrupter Replacement The vacuum interrupters used in the Type Cl interrupter are of an encapsulated design. If the interrupter or interrupter housing are damaged in any way the entire assembly must be replaced. To replace an interrupter assembly proceed as follows, refer to Figure 9 for item references: NOTE: The current transformers on the encapsulated interrupter bushings are permanently affixed. ACT cannot be removed without damaging both the CT and the interrupter. 1. Close interrupter contacts. 2. Remove the bail and frame assembly and untank mechanism. Refer to "Untanking procedure for instructions. 3. Remove lifting angles mounting support. 4. Remove cotter pin. 5. Remove remaining nut(s), clamps and spacers, if used. 6. Carefully remove interrupter. 7. Clean sealant off surface of cover. 8. Place new o-ring into groove in bottom of new interrupter. 9. Apply a small bead of Dow Corning 732 RTV adhesive/ sealant, or equivalent, around perimeter of o-ring groove. 10. Carefully place interrupter moving contact rod through cover assembly. Slide moving contact rod into operating rod and align connecting pin holes. 11. Loosely install spacers, if used, clamps and nut(s). 12. Loosely install lifting angle and mounting support. 13. Tighten all clamp hardware, a little at a time in rotation, to ft-lbs torque. 14. Tighten support hardware. 15. Install connecting pin and cotter pin. 16. Install tank,frame and bail assemblies, refer to Tanking pr cedure for instructions. Aperseal Cable Seals When removing or installing aperseal cable seals, the body of the aperseal must not be rotated. CAUTION Rotating the body of the aperseal may break the seal between body and cable. This will provide a path for moisture, or other contaminants, to enter the interrupter operating mechanism tank. This will damage the mechanism and may render it inoperative. To remove or install an aperseal secure the aperseal body with soft-jawed pliers (to prevent it from rotating), while turning the nut. When tightening tighten to inch-pounds torque. Electronic Trip Control The electronic trip control monitors the current level passing through the Cl interrupter, by measuring the voltages produced in the bushing mounted current transformers. If excessive current levels are present, the control initiates a trip signal. Repairs to the control are limited to the replacement of damaged components, ie. control circuit board, switches or diodes. 6

7 S Figure 9. Interrupter replacement. 7

8 Figure 10. Testing CT protection circuit in place. Figure 11. Bench testing CT protection circuit. TESTING CT PROTECTION BOARD The CT protection board provides automatic protection for the bushing mounted CTs. It is located within the mechanism tank, on the left side of the mechanism frame. When the control is removed from an in-service interrupter, the CT protection board will automatically protect the CTs. If the CT protection board malfunctions, CT(s) can be damaged. The following tests can be used to verify that the protection board is working properly. Test circuits for the CT protection board are shown in Figures 10 and 11. The board can be tested without removal of either the mechanism tank or it may also be bench tested. Test Procedure TESTING IN PLACE Assemble and connect the equipment as shown in Figure 10, which shows the test current being applied to phase A. 1. Manually close the interrupted contacts, refer to manual closing procedure. 2. Slowly increase the voltage on the variable transformer while observing the voltage between pins A and D. 3. After approximately 115 volts, the voltage should drop off even though the voltage from the variable transformer is increased. If the voltage does not drop off, the CT protection board is not operating properly and must be replaced. 4. Disconnect input power and reconnect to test phase B and then phase C. Ground can be tested between pins E & F while the test circuit is connected to any phase. BENCH TESTING Assemble and connect the equipment as shown in Figure 11, which shows the test voltage being applied to phase A. 1. Slowly increase the voltage on the variable transformer while observing the voltage between the 1000:1 CT leads. 2. After approximately 115 volts, the voltage should drop off even though the voltage from the variable transformer is increased. If the voltage does not drop off, the CT protection board is damaged and must be replaced. 3. Disconnect input power and reconnect to test phase B, phase C and ground. OPERATING PROCEDURES The interrupter should not be operated or placed into service until there is a full understanding of its operating procedures. Mechanism and control levers and indicators referred to in this section are identified in Figures 12 and 13. Mechanical Operation Check A simple nonelectric test of interrupter operation will assure that the operator mechanism and the interrupter linkage are functioning properly. The following procedure may be used. 1. Remove control fuse from 120 volt ac fuse block in cabinet interior to isolate mechanism from electrical system. 2. Check that the interrupter is open. The Contact-Position Indicator visible from the front of the mechanism tank should read OPEN. NOTE: If interrupter is closed move the Trip-Reset handle at the front of the mechanism tank to TRIP. This will release a latch in the mechanism and open the interrupter contacts. The Contact-Position Indicator will then read OPEN. 3. Using the manual closing procedure described in Manual Closing section, close the interrupter. The Contact-Position Indicator should read CLOSED. 4. Move the Trip-Reset handle to TRIP. The interrupter contacts should open and the Contact-Position Indicators should read OPEN. Successful completion of the above four steps confirm proper operation of the interrupter operating mechanism. 8

9 S Figure 12. Front of Type CI interrupter mechanism tank KMA Figure 13. Panel of electronic trip control used with Type CI interrupter KMA 9

10 Electrical Operation Check The following procedure may be used to check the electrical operation of the interrupter. 1. Make sure that the Trip-Reset handle on the mechanism tank is set on RESET. 2. Apply 120 volt ac power. Upon application of power, the spring-charging motor will run to charge the closing springs. The spring-charging motor will stop running when the springs are fully charged and the spring indicator will indicate that the springs are charged. 3. To close the interrupter, move Manual Control switch on control panel to CLOSE. The interrupter should close immediately. The red indicator lamp on the control panel should light and the Contact-Position Indicator at the front of the mechanism tank should read CLOSED. 4. To open the interrupter, move the Manual Control switch to TRIP. The interrupter should open. The green indicator lamp on the control panel should light and the Contact- Position Indicator in the mechanism tank should read OPEN. Manual Closing Manual deenergized closing into an energized line,without the 120 volt ac supply, can be accomplished with the Push-Pull handle located on the left front of the mechanism tank (Figure 12). 1. If the electronic control is connected, make sure the manual control switch on the control panel has been moved to the TRIP position and released. 2. Move Trip-Reset handle, right front of mechanism tank to either the TRIP or RESET position. 3. Pull Push-Pull handle approximately 30 times, or until the operating spring indicator reads SPRING CHARGED. 4. Move Trip-Reset handle to CLOSE. Interrupter contacts will close and handle will spring back to the RESET position. Manual Tripping A closed interrupter can be manually tripped at the operator mechanism by moving the Trip-Reset handle at the front of the tank to TRIP. This will release a trip latch in the operating mechanism, allowing the charged opening springs to drive the contacts to their open position. The interrupter cannot be closed while the Trip-Reset handle is in the TRIP position. IN-SERVICE OPERATION Initial Operation To place the interrupter in operation, proceed as follows: 1. Make sure that the control cables extending from the interrupter are connected to the control and that 120 volt ac power is supplied to the control. 2. Make sure that the Trip-Reset handle at the front of the interrupter mechanism tank is in the RESET position. 3. Move the Manual Control switch on the electronic control panel to CLOSE. The interrupter will close. The red indicator lamp on the control panel will light and the indicator flag in the mechanism will read CLOSED. Automatic operation Once the unit is closed and in service, the electronic control will automatically trip the interrupter in accordance with the programmed operating characteristics when a phase or ground fault occurs. While closed, the red indicator lamp on the control panel will provide a continuous indication of closed contacts. The indicator flag, visible through a viewing port at the front of the mechanism tank, will display CLOSED. To open the interrupter while it is in service, move the manual control switch to TRIP. The interrupter will immediately open. Whether tripped automatically or manually, the green indicator lamp on the panel and the OPEN position of the mechanism flag will indicate open contacts. If the remote control operating feature is being used, operations initiated by the remote trip and close dry contacts will be identical to those initiated with the Manual Control switch. Indicator lamp and Contact-Position Indicator displays will also be the same. SCHEMATIC DIAGRAMS Figure 14 shows the schematic wiring diagrams for the Type Cl interrupter. This drawing reflects a standard unit. Refer to the wiring diagrams furnished with your interrupter for information on factory installed accessories. 10

11 S Figure 14. Schematic diagram of Type CI interrupter. 11

12 SERVICE PARTS LIST The service parts and hardware listed and illustrated include only those parts and assemblies usually furnished for repair or involved in the maintenance procedures 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 Q 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 System's interrupters that may not be readily available locally. To assure correct receipt of any parts order, always include interrupter type and serial number. Because of Cooper Power System's 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 interrupter. All parts carry the same warranty as any whole item of switchgear, i.e. against defects in material or workmanship within a period of one year from date of shipment. Type CI Interrupter Control Parts Catalog No. Description KA1110ME Surge card assembly KA852ME1 Heater assembly KP4011A12 Silicon diode (D2) KP4012A44 Zener diode (D1) KPP140T Selector switch assembly (SW1) KP2069A8 Pointer knob KP2101A14 Terminal strip (T2) KP2101A214 Terminal marker (T2) KP1118ME Winq head stud KP1119ME Stud retainer Light socket Sylvania Cat. # Red lens, Sylvania Cat. # Green lens, Sylvania Cat. # Lamp, Sylvania Cat. #120 PSB Toggle switch SW2) KCF101EA Control circuit board KP2056A5 Receptacle, 14 pin (R 1) KP2056A28 Receptacle, 10 pin (R2) KP2101A24 Terminal strip (T3) KP2101A224 Terminal marker (T3) KP1100ME Fuse block (F) KP1110ME Fuse block end piece KP2075A13 Fuse KCF51E* Time delay plug (phase) KCF51E* Time delay plug (ground) KCF110K* Minimum trip resistor (phase) KCF110K* Minimum trip resistor (ground) KCF53EA Phase instantaneous trip accessory KCF53EB Phase and ground instantaneous trip accessory KCF54EA Target accessory KCF52EA Phase and ground inrush restraint accessory KCF52EB Ground inrush restraint accessory Tank Assembly (Figure 15) Item Catalog Ouan. No. DescrIptlon Number Req d. 1 Retaining ring KP2013A Retaining ring KP2013A O-ring gasket KP2103A Tank assembly KNC1095A 1 5 Capscrew, hex hd,5/16-18 x 3/4, st stl K A 22 6 Lockwasher, 5/16, med, st sti K A 22 7 Hex nut 5/16-18, st stl K A 22 8 Name plate KPP1026T1 1 9 Lock nuts KP2020A O-ring KP2000A Port cover assembly KNC142S00A 1 12 O-ring KP2000A Port cover assembly KP144VW Hinge and pointer assembly KNC175S 1 15 O-ring KP2000A Lockwasher, 1/4, med, st stl K A 2 17 Capscrew, hex hd,1/4-20 x 1/2, st stl K A 2 18 Decal KP1041V4H 1 19 Charging handle KNC1186S 1 20 Hex jam nut 3/8-16 st stl K A 1 21 Shroud KNC1209S 1 22 Clamp KP2251A Screw round hd, #6-32 x 5/16 st sti K A 3 24 Lockwasher, #6, st stl K A 3 25 Bellows KP2241 A Clamping ring KNC 1208S 1 27 Shaft extension KNC1207S 1 28 Set screw KP2023A Guide plate KNC1206S 1 30 o-ring KP2006A Retaining ring KP2013A Spacer KP3009A Charging handle assembly KNC232S 1 34 Washer, 3/8, st stl K A 1 35 Capscrew, hex hd, 3/8-16x 1 st stl K A 1 * Enter value or curve required 12

13 S Figure 15. Tank assembly. 13

14 Figure 16. Bail and frame assembly. 14

15 S Bail and Frame Assembly (Figure 16) Item Catalog Quan. No. Description Number Req d. 1 Support plate KNC1211S 1 2 Lifting lug KNC1126S 2 3 Capscrew, hex hd, 3/8-16 x 1 st stl K A 14 4 Grommet strip 13-1/4" K A 3 5 Hex nut, 3/8-16 st stl K A 15 6 Lockwasher, 3/8, med, st stl K A 15 7 Support, right hand KNC178S 1 8 Bracket KNC1124S 1 9 Bail and parking stand "Z" KPP159TA 1 "U" KNC177SB 1 10 Bail adapter KNC1129S 6 11 Lower plate KNC1125S 1 12 Hex nut, 5/8-11, st stl K A 1 13 Lockwasher, 5/8, med, st stl K A 2 14 Capscrew, hex hd, 5/8-11 x 2-1/2, st stl K A 2 15 Bracket KPP1035T Capscrew, hex hd, 3/8-16 x 1-1/4, st stl K A 1 17 Support, left hand KNC179S 1 18 Flat washer, 5/8, st stl K A 1 15

16 Figure 17. Interrupter top cover assembly. 16

17 S Interrupter and Top Cover Assembly (Figure 17) Item Catalog Quan. No. Description Number Req d. 1 Hex nut,3/8-16, st stl K A 11 2 Lifting angle KNC1122S 2 3 Mounting support KNC1123S 1 4 Capscrew, hex hd, 1/4-20 x 5/8, st stl K A 3 5 Cable support KNC 1119S1 1 6 Lockwasher, 1/4, med, st stl K A 3 7 Hex nut, 1/4-20, st stl K A 3 8 Interrupter assembly Consult factory 3 9 Current transformer Consult factory 3 10 Cover assembly Consult factory 1 11 Spacer KP3011A Clamp KP1252VS 9 13 Cotter pin, 1/16 x 1 /2, brass K A 6 14 Connecting pin KNC1087S Capscrew, hex hd, 3/8-16 x 5/8, st stl K A 2 16 Lockwasher, 3/8, med, st stl K9W A 2 17 Wire tie K A 4 18 O-ring KP2000A Aperseal KP2151A Pipe plug KP2007A

18 Figure 18. Mechanism assembly. 18

19 S Mechanism Assembly (Figure 18) Item Catalog Quan. No. Description Number Req d. 1 Machine screw, rd hd, #6-32 x 1, stl K Z 4 2 Lockwasher, #6, med, stl K Z 12 3 Microswitch KP2181A Bracket assembly KNC213S 1 5 Machine screw, rd hd, #6-32 x 1-3/4,stl K Z 6 6 Bracket assembly KNC135S 2 7 Insulation KNC1070S 3 8 Capscrew, hex hd, 1/4-20 x 1/2, stl K o 2 9 Lockwasher, 1/4, med, stl K Z 2 10 Solenoid and bracket assembly KPP163T 1 Solenoid only KPP1060T 1 11 Retaining ring, Type C, WA514 K A 1 12 Latch assembly KNC 133SA 1 13 Spacer KP3007A Microswitch KA Spring KRK310F Counter assembly KA28C Screw, self tapping, rd hd #6-32 x 3/8 Type F, stl K Z 2 18 Bracket KNC 1170S 1 19 Machine screw, rd hd, #6-32 x 3/8, stl K Z 2 20 Bi-stable actuator KRB296VA 1 21 Lockwasher, #8, med, stl K Z 2 22 Machine screw rd hd #8-24 x, 1/4, stl K Z 2 Item Catalog Quan. No. Description Number Req d. 23 Terminal strip KP2101A Marker strip KP2101A Machine screw, rd hd, #6-32 x 5/8, stl K Z 2 26 Mechanism Assembly KPP172T 1 27 Hex nut, #6, stl K Z 4 28 Machine screw, rd hd, # X 1-1/2,stl K Z 4 29 Lockwasher, # 10, med K Z 4 30 Motor and gear assembly KNC209S 1 31 CT protection board assembly KA 197GV Hex nut, #6-32, st stl K A 3 33 Spacer KP3004A Lockwasher, #6, med, st stl K A 3 35 Machine screw, rd hd, #6-32 X 1/2,st stl K A 5 36 Machine screw, rd hd, #6-32 x 3/8, stl K Z 2 37 Lockwasher, #6, med, stl K Z 2 38 Bracket KNC1134S 1 39 Lockwasher, #6, int tooth, st stl K A 2 40 Terminal strip KP2101A Marker strip KPP1028T1 1 19

20 2005 Cooper Power Systems or its affiliates Hickory Street Pewaukee, WI USA KDL 6/05