Reclosers Service Information Types RXE and WE Maintenance Instructions S280-40-7 Figure 1. Type WE oil-interrupting, three-phase, electronically controlled, automatic recloser. 03035KM Contents Safety Information ..................................................... 2 Shop Maintenance Procedures ................................12 Hazard Statement Definitions ................................ 2 Bushings ................................................................12 Safety Instructions .................................................. 2 Interrupter Assembly ...............................................13 Product Information .................................................. 3 Closing Solenoid Contactor ...................................14 Introduction ............................................................ 3 Closing Solenoid ....................................................14 ANSI Standards ..................................................... 3 Closing Solenoid Fuses .........................................15 Quality Standards ................................................... 3 Replacement of Circuit Components .....................15 Handling and Storage ............................................ 3 Removing Mechanism from Head ..........................18 Description ............................................................. 3 Re-Installing Mechanism into Head .......................19 Operation ............................................................... 3 Operational Checks ................................................20 Mechanism Operation ............................................ 5 Service Parts Lists ....................................................24 Ratings ....................................................................... 6 Bushing Parts .........................................................24 Maintenance .............................................................. 7 Head and Tank Assemblies ....................................26 Frequency of Recloser Maintenance ..................... 7 Closing Solenoid Mechanism .................................28 Periodic Recloser Inspection and Maintenance ..... 7 Interrupter Mechanism ...........................................30 Manual Operation of the Recloser ......................... 9 Additional Information ..............................................32 Insulation Level Withstand Tests ............................10 Replacement Kits ...................................................32 Oil Condition ...........................................................11 Factory-Authorized Service Centers ......................32 Adjustments ..............................................................11 Factory Maintenance Classes ................................32 December 2004 • Supersedes 10/03 Printed in USA 1 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions ! SAFETY FOR LIFE ! SAFETY FOR LIFE SAFETY FOR LIFE Cooper Power Systems products meet or exceed all applicable industry standards relating to product safety. We actively promote safe practices in the use and maintenance of our products through our service literature, instructional training programs, and the continuous efforts of all Cooper Power Systems employees involved in product design, manufacture, marketing, and service. We strongly urge that you always follow all locally approved safety procedures and safety instructions when working around high voltage lines and equipment and support our “Safety For Life” mission. SAFETY INFORMATION The instructions in this manual are not intended as a substitute for proper training or adequate experience in the safe operation of the equipment described. Only competent technicians who are familiar with this equipment should install, operate, and service it. A competent technician has these qualifications: • Is thoroughly familiar with these instructions. • Is trained in industry-accepted high- and low-voltage safe operating practices and procedures. • Is trained and authorized to energize, de-energize, clear, and ground power distribution equipment. • Is trained in the care and use of protective equipment such as flash clothing, safety glasses, face shield, hard hat, rubber gloves, hotstick, etc. Following is important safety information. For safe installation and operation of this equipment, be sure to read and understand all cautions and warnings. Safety Instructions Following are general caution and warning statements that apply to this equipment. Additional statements, related to specific tasks and procedures, are located throughout the manual. DANGER: Hazardous voltage. Contact with hazardous voltage will cause death or severe personal injury. Follow all locally approved safety procedures when working around high and low voltage lines and equipment. G103.3 ! WARNING: Before installing, operating, maintaining, 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. ! G101.0 Hazard Statement Definitions This manual may contain four types of hazard statements: DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. ! WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. ! CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. ! CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in equipment damage only. 2 WARNING: This equipment is not intended to protect human life. Follow all locally approved procedures and safety practices when installing or operating this equipment. Failure to comply can result in death, severe personal injury, and equipment damage. G102.1 ! WARNING: Power distribution equipment must be properly selected for the intended application. It must be installed and serviced by competent personnel who have been trained and understand proper safety procedures. These instructions are written for such personnel and are not a substitute for adequate training and experience in safety procedures. Failure to properly select, install, or maintain power distribution equipment can result in death, severe personal injury, and equipment damage. G122.2 ! ! S280-40-7 SAFETY FOR LIFE PRODUCT INFORMATION Introduction Operation Service Information S280-40-7 provides Maintenance instructions for Types RXE and WE three-phase, electronically controlled, oil interrupted reclosers. Included is a general description of the recloser and its operation, instructions for periodic inspection and routine maintenance, testing procedures, and instructions for shop repairs. A service parts list, keyed to exploded-view drawings of the recloser is included at the back of the manual. The Type RXE and WE reclosers trip open an overcurrent (either phase or ground faults) and then reclose automatically. If the overcurrent is temporary the automatic recloser restores normal service. If the fault is permanent a preset number of trip and reclose operations are performed to lockout. All three phases of the RXE and WE reclosers open, reclose and lockout simultaneously. Refer to the specific electronic recloser control service information for control checking, testing, and troubleshooting procedures. Read This Manual First Read and understand the contents of this manual and follow all locally approved procedures and safety practices before installing or operating this equipment. Additional Information These instructions cannot cover all details or variations in the equipment, procedures, or process described, nor 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, contact your Cooper Power Systems sales representative. IEEE Standards Kyle type RXE and WE reclosers are designed and tested in accordance with IEEE standards C37.60-1981™ and C37.61-1973™. Quality Standards The Quality System at the Cooper Power Systems Kyle Distribution Switchgear plant is certified to the ISO 9001 standard. Handling and Storage Be careful during handling and storage of the control to minimize the possibility of damage. If the recloser is to be stored for any length of time prior to installation, provide a clean, dry storage area. Opening sequences can be all fast, all delayed, or any combination of fast operations followed by delayed operations up to a total of four. Fast operations clear temporary faults before branch-line fuses can be damaged. Delayed operations allow time for fuses or other downline protective devices to clear so that permanent fauIts can be confined to smaller sections of Iine. Fast arc interruption is provided by bridge-type contacts which provide two breaks in series per phase. Each current break has a self-generating type arc interrupting structure with a series of vented chambers. As the contacts open, the arc generates gas pressure within the structure chamber which blasts oil across the arc and out through the vents. The moving-bridge type contacts are driven by the release of opening springs that are loaded when the recloser mechanism is closed. Closing energy, as well as energy to charge the opening springs, is supplied by a high-voltage closing solenoid momentariIy connected phase-to-phase through a highvoltage contactor. The contactor is mechanically closed by a rotary solenoid actuated by a signal from the electronic control. A trip-free, yellow operating handle located under the sleet hood will manually lock open the recloser. It cannot manually close the recloser but must be in the CLOSED position for the rotary close solenoid to operate. A red contact position indicator linked to the recloser mechanism, but independent of the operating handle, is also located under the sleet hood. The location of the major operation components of the RXE recloser is shown in Figure 2. They are similar for the WE recloser. 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 follow. Description The Type RXE and WE reclosers are self-controlled devices that protect distribution lines and equipment. A complete unit consists of the recloser, an electronic control, and an interconnecting cable. Fault current sensing is provided by the control which actuates the recloser. Circuit interruption is provided by the recloser. 3 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions Figure 2. Untanked Type RXE oil-interrupted recloser. 4 ! SAFETY FOR LIFE S280-40-7 Mechanism Operation 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 operation of lever arrangement is shown in Figure 3. With the contacts closed (a) 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 (b). 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 (c), the trip arm moves the reset trip lever, which releases the reset lever. The reset lever is rotated by a 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 (d) to its original position, at the same time closing the contacts. The mechanism is then ready for another cycle. Figure 3. Head mechanism lever arrangement. 5 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions RATINGS The recloser will operate effectively only when used within its specified ratings. Consult the following ratings tables and compare to system characteristics at the point of application prior to installation. TABLE 1 Electrical Ratings Description RXE Nominal system voltage (kV) . . . . . . . . . . . . . Maximum rated voltage (kV) . . . . . . . . . . . . . Rated impulse withstand voltage (BIL)(kV crest 60 Hz withstand voltage (kV rms) Dry, one minute . . . . . . . . . . . . . . . . . . . . . Wet, ten seconds . . . . . . . . . . . . . . . . . . . . . Rated maximum continuous current (amps) . . Bushing creepage distance* mm (in) . . . . . . . WE ... ... ) . 2.4-14.4 15.5 110 2.4-14.4 15.5 110 . . . . 50 45 400 330 (13) 50 45 560 330 (13) . . . . . . . . *432mm (17 in) extra creepage distance available as an accessory TABLE 2 Interrupting Ratings Type Maximum Continuous Current (amps) Interrupting Ratings (rms symmetrical amps) Voltage (kV) RXE WE 400 560 6000 10000 14.4 14.4 TABLE 3 Duty Cycle Percentage of Interrupting Rating 15-20 45-55 90-100 6 Maximum Circuit X/R Value 3 7 14 No. of Unit Operations Type RE Type WE 28 24 10 Total 62 28 20 10 Total 58 ! S280-40-7 SAFETY FOR LIFE MAINTENANCE Frequency of Recloser Maintenance Because reclosers are used under widely varying operating and climatic conditions, maintenance intervals are best determined by the user, based on actual operating experience. To assure proper and trouble-free operation, reclosers must be maintained when they have operated the equivalent of a rated duty cycle, refer to Table 3. In the absence of specific operating experience, the following procedures are recommended: A. When RXE or WE reclosers are operated under usual service conditions as defined in ANSI standard C37.60, “Standard Requirements for Overhead, Pad Mounted, Dry Vault and Submersible Automatic Reclosers and Fault Interrupters for AC Systems”, it is recommended that the following maintenance procedures be performed 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 standard duty cycle, as shown on page 6 of these instructions into an equivalent duty cycle based on the actual operating duty of the recloser. B. If the recloser has not completed an equivalent duty cycle within three years, it is recommended that an inspection be made at that time. See Periodic Recloser Inspection and Maintenance. Periodic Recloser Inspection and Maintenance Each periodic inspection should include the following steps: WARNING: Hazardous Voltage. This equipment must be de-energized and grounded prior to conducting any maintenance, oil sampling, or oil filling procedures. Failure to comply can result in death or severe T239.1 personal injury. ! 1. Bypass and remove recloser from service using all locally approved safety practices. Carefully transport the unit to a suitable service facility. CAUTION: Equipment damage. Keep work areas clean to prevent debris from accumulating on or in the hydraulic mechanism during disassembly and reassembly of components. Failure to comply can result in hydraulic failure and recloser misoperation. T254.0 ! 2. Inspect external components. A. Check for broken or cracked bushings and replace as necessary. Refer to Bushings section of this manual. B. Check for paint scratches and other mechanical damage. Paint to inhibit corrosion. C. Record counter reading from control in recloser record log. WARNING: Hazardous Voltage. The switchgear and high voltage transformer must be in a test cage or similar protective device to prevent accidental contact with the high voltage parts. Solidly ground all equipment. Failure to comply can result in death, severe personal injury, and equipment damage. T221.3 ! 3. Perform a dielectric withstand test to check the insulation level of the recloser and the dielectric integrity of the interrupter assemblies. Refer to Insulation Level Withstand Tests section of this manual. CAUTION: Equipment damage. Recloser must be open (yellow operating handle, under sleethood, down) before untanking. Tripping the mechanism out of oil will cause excessive mechanical shock to the operating mechanism, which will cause accelerated wear and/or damage to the mechanism. T202.0 4. Untank the recloser to expose the internal components. CAUTION: Dielectric failure, equipment damage. Never use volatile solutions, detergents, or water-soluble cleaners when cleaning the interior of this equipment. These cleaners will contaminate the insulating oil, reducing its dielectric strength. Operation with contaminated insulating oil can result in internal flashovers that will cause equipment damage and possible personal injury. T201.2 ! 5. Clean all internal components. A. Remove all traces of carbon by wiping with a clean, lint-free cloth. Note: Although current interruption takes place in a sealed vacuum chamber, the closing solenoid contactor operates in oil and will produce some carbon deposits. B. Flush the mechanism with clean, dry insulating oil. 6. Remove the moving contact assembly from the bottom of the contact lift rod to check the erosion of the contacts. Arcing tips of the moving contacts can experience considerable erosion before replacement is necessary. Slight pitting and discoloration can be dressed with a piece of crocus cloth. However, erosion of the load current carrying contact surfaces requires replacement of the entire internal structure before its effectiveness is impaired. Figure 4 shows a set of moving contacts after they have experienced severe interrupting duty and a new set for comparison. The used contacts have reached the condition where they should be replaced. 7 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions If dielectric strength is less than 22 kV rms, it must be replaced: A. Drain the tank, and clean out all sludge and carbon deposits. B. Fill with new, clean insulating oil up to 2-1/4 inches below the top of the tank flange. NOTE:Tank capacity is approximately 41 U.S. gallons. Refer to Oil Condition section of this manual. 9. Clean and examine the head gasket. Replace if it is cracked, cut, or otherwise damaged, or if it has been permanently deformed. 10. Clean the head gasket seat and retank the recloser. Figure 4. Left: contact assembly new; right: moving contact assembly after one full duty cycle 7. Check circuit components attached to the recloser head, frame and operating mechanism. A. Check condition of the wiring to the terminal strip and make sure all connections are tight. B. Make sure that the rotary solenoid and the trip solenoid are firmly attached to the recloser frame. C. Check SW1, SW2, and SW3 switches as applicable: WARNING: Hazardous material. Do not open mercury switches or come in direct contact with switches exhibiting any sign of mercury leakage. Exposure to mercury can cause serious health problems. T281.0 ! • For units with two mercury switches and one microswitch: 1. Check that the two mercury switches (SW2 and SW3) are securely held in place by the nylon mounting straps. Note: Mercury Switch-to-Microswitch Retrofit Kit KA349WE is available to replace existing mercury switches with microswitches. Contact your Cooper Power Systems representative for additional information. 2. Check condition of microswitch (SW1) mounted above main shaft. • For units with three microswitches: Check condition of all three microswitches. D. Check condition of the bushing current transformers and the associated wiring. E. Check the control cable receptacle (Figure 2). If circuit component malfunction is suspected, refer to Operational Checks section of this manual. 8. Check the dielectric strength of the insulating oil. An oil sample taken near the bottom of the tank should have a dielectric strength of not less than 22 kV rms. 8 A. Move the yellow operating handle to the up position to avoid any possible binding while retanking. B. Replace the head bolts and tighten to 35-55 ft-lbs. torque. Apply clamping force gradually and equally, in rotation, to each bolt to achieve an evenly distributed gasket sealing pressure. NOTE: Type WE reclosers serial 800 through 6049 and RXE below serial 345 require the following special thread-sealing procedure to keep moisture from entering the tank along the threads of the head bolts. 1. Before reinstalling the head bolts, apply a liberal amount of a non-hardening pliable sealant, Permatex® Form-A-Gasket® No. 2, to the end of each bolt. The four leading threads should be completely coated. 2. When the bolt is installed, a slight bead of material (resembling an o-ring) should remain on the top of the tank flange. Apply the sealant each time the head bolts are removed and reinstalled. 11. Check the oil level with the dipstick in the head and adjust the level to the upper line on the dipstick. NOTE: If the recloser is equipped with an oil-sight gage, the oil level should be above the sight gage. If the oil surface line is visible in the window, add oil to raise the level to the upper line on the dipstick. 11. Perform a dielectric withstand test to check the insulation level of the recloser and the vacuum integrity of the interrupters. Refer to Insulation Level Withstand Tests section of this manual. ! S280-40-7 SAFETY FOR LIFE Manual Operation of the Recloser The recloser may be closed and opened manually while the mechanism is either in or out of oil. Manual Operation of the Mechanism in Oil (Tanked) WARNING: Explosion Hazard. Excessive Contact Arcing. Do not use the manual closing tool to close an energized recloser. Closing an energized oil-insulated recloser with a manual closing tool can cause excessive contact arcing, rapid build-up of gas within the equipment, and possible explosion that can cause death, severe personal injury, and equipment damage. T203.2 ! For a tanked recloser (mechanism immersed in oil) use the following manual operating procedures: Close the recloser as follows: 1. Remove the closing tool port cover and gasket from the side of the head casting. Refer to Figure 5 for location. Manual Operation of the Mechanism Out of Oil (Untanked) CAUTION: Equipment damage. Do not trip open the recloser when the mechanism is out of oil. Tripping the mechanism out of oil will cause excessive mechanical shock to the operating mechanism, which can cause damage to the mechanism. T282.0 ! To operate the mechanism out of oil, proceed as follows: Close the recloser as follows: • If the mechanism is still mounted in the head, follow the Mechanism in Oil Close procedure. • If the mechanism is removed from the head, proceed as follows: 1. Turn the trip-reset shaft clockwise (Figure 6) with a pair of needle-nose pliers to reset the mechanism. 2. Turn the closing shaft clockwise with the closing tool to close the main contacts. 2. Insert the KA90R2 T-handle closing tool accessory into the closing tool port and engage the pin on the closing shaft. CAUTION: Equipment damage. Do not turn the manual closing tool more than one-quarter turn clockwise. Forcing the tool beyond the mechanism stop may shear the pin on the closing shaft of the recloser. T222.0 Figure 6. Location of trip-reset shaft. 83367KMA Open the recloser as follows: To open the contacts while the mechanism is out of oil, proceed as follows: IMPORTANT: This procedure requires two people; one to operate the closing tool, the other to operate the trip lever. 1. Using the T-handle closing tool, the first technician turns the closing shaft clockwise and holds against the stop. 82008KMA Figure 5. Manually closing the recloser with KA90R closing tool. 3. Lift up the yellow operating handle under the sleet hood to reset the mechanism. 4. Turn the closing tool one-quarter turn clockwise to close the main contacts. Open the recloser as follows: Pull down the yellow operating handle to trip open the recloser. CAUTION: Personal injury. Failure to maintain enough pressure to hold the closing shaft against the stop will cause the opening springs to release and aggressively snap the manual closing tool counterclockwise resulting in personal injury. . T283.0 2. While the first person continues to maintain enough pressure to hold the closing shaft against the stop, the second person releases the trip lever (Figure 7) by moving it to the right. 9 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions 3. Ground Phase A (bushing 2) and Phase C (bushing 6). 4. Apply proper test voltage to Phase B (bushing 3). 5. The recloser should withstand the test voltage for 60 seconds. Test 3 IMPORTANT: The recloser must pass the closed-contacts tests (Tests 1 and 2) prior to attempting the open-contacts test (Test 3). 1. Open main contacts of recloser. Refer to Manual Operation of the Recloser section of this manual. 2. Ground recloser tank and head. 3. Connect and ground all three load-side bushings (2, 4, 6) 4. Connect all three source-side bushings (1, 3, 5). 5. Apply proper test voltage to source-side bushings. Figure 7. Location of trip-reset shaft. 83368KMA 3. The first person maintains enough pressure to slowly allow the closing tool to rotate counterclockwise; releasing the opening spring pressure and opening the main contacts. 6. The recloser should withstand the test voltage for 60 seconds. 7. Reverse the connections: ground source-side bushings (1,3, 5); apply test voltage to load-side bushings (2, 4, 6) for 60 seconds 8. The recloser should withstand the test voltage for 60 seconds. Insulation Level Withstand Tests WARNING: Hazardous voltage. The switchgear and high voltage transformer must be in a test cage or similar protective device to prevent accidental contact with the high voltage parts. Solidly ground all equipment. Failure to comply can result in death, severe personal injury, and equipment damage. T221.3 TEST 2 PHASE TO PHASE TEST 1 PHASE TO GROUND ! 5 6 5 6 ac ac 3 4 3 4 1 2 1 2 High-potential withstand tests provide information on the dielectric condition of the recloser. Testing is performed at 75% (37.5 kV) of the rated low-frequency withstand voltage of 50kV. Test 1 1. Manually close main contacts of recloser. Refer to Manual Operation of the Recloser section of this manual. 2. Ground recloser tank and head. 3. Connect all three source-side bushings (1, 3, 5) together. TEST 3 OPEN CONTACT OPEN CONTACT 5 6 5 6 3 4 3 4 1 2 1 2 ac ac 4. Apply proper test voltage to source-side bushings. 5. The recloser should withstand the test voltage for 60 seconds. Test 2 1. Manually close main contacts of the recloser. Refer to Manual Operation of the Recloser section of this manual. 2. Ground recloser tank and head. 10 Figure 8. High Potential Withstand Testing connection diagrams. ! S280-40-7 SAFETY FOR LIFE Withstand Test Results These high potential withstand tests provide information on the dielectric condition of the recloser and the integrity of the interrupters. If the recloser passes the closed-contacts tests (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. If the recloser fails the closed-contacts tests (Test 1 and 2) the cause is likely to be a diminished electrical clearances, low oil dielectric strength or failed insulation. After correcting the problem, retest to confirm the repair. Oil Condition Oil provides the internal insulation barrier between phases and from phase to ground, and must be replaced before it deteriorates below a safe dielectric level. Replace the oil if its dielectric strength falls below 22 kV. New oil should always be filtered before using even though it is obtained from an approved source. Passing the oil through a blotter press will remove free water and solid contaminants such as rust, dirt, and lint. Keep aeration to a minimum during filtering to prevent moisture in the air from condensing in the oil and lowering its dielectric strength. Used oil must be treated before reusing. Filtering may remove absorbed and free water and other contaminants to raise the dielectric strength to acceptable levels. However, filtering does not always remove water-absorbing contaminants and the dielectric strength may fall rapidly after being returned to service. Therefore the recloser should be filled with new oil, or oil that has been restored to like-new condition. Oil used in these reclosers conforms to ASTM Standard D3487, Type l; its property limits are shown in Table 4. ADJUSTMENTS Control Refer to the control installation manual for applicable procedures for adjusting operations to lockout, reclosing time, phase-trip sequence, minimum-trip values, resetting time, ground-trip sequence, phase-trip timing and ground-trip timing. Control Lever Overtravel Adjustment Check for proper adjustment of the control lever by first removing the sleet hood cover to expose the control 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 the dimension between the top of the control lever and the underside of the sleet hood should be 1/4 inch (Figure 9). If the control lever is not adjusted properly, remove the Cring and slide the control lever from the shaft. Rotate the control lever clockwise to reduce the dimension or counterclockwise to increase the dimension. Slide the control lever back onto the shaft and recheck the dimension. When the proper dimension has been obtained replace the C-ring. TABLE 4 Cooper Power System Oil Specifications Characteristic Color Reaction Neutralization No. Corrosive Sulfur Steam Emulsion No. Flash Point Fire Point Pour Point Viscosity, ST (SUS) at 100 C 40 C 0C Specific Gravity at 15 C Coefficient of Expansion (from 25 to 100 C) Interfacial Tension Dielectric Constant Dielectric Strength Water Content (Karl Fischer Test) PCB Content Weight Acceptable Value 0.5 max (ASTM calorimeter) Neutral 0.03 mg KOH/g max Non-Corrosive 25 seconds max 145 C min 160 C min -40 C max ASTM Test Standard* D1500 D974 D1275 D1935 D92 D92 D97 D445, D88 3.0 (36) Maximum 12.0 (66) Maximum 76.0 (350) Maximum 0.91 g/cc max D1298 0.0007 to 0.0008 40 dynes per cm min 2.2 – 2.3 30 kV min D1903 D971 D924 D877, D1816 35 ppm D1533 No detectable amount D3304 0.9 kg/liter 7.5 Ib/gal Figure 9. Overtravel adjustment of control lever. Recloser Rating Changes The continuous current rating and minimum-trip values can be changed in the field, refer to the control installation manual for applicable procedures. Closing coils are available in various voltage ratings from 2.4 to 14.4 kV. There are also three dc closing coils available: 48, 125 and 250 vdc. No coil fuses are used with the dc closing coils. When converting a recloser from a high voltage closing coil to a low-voltage closing coil low-voltage contactor KA568R1 is also required. *Tests are described in latest revision of ASTM standards. 11 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions SHOP MAINTENANCE PROCEDURES 5. Twist off the split aluminum clamping ring from the old bushing and install on the new bushing if it is in good condition; replace the ring if damaged. WARNING: Hazardous Voltage. This equipment must be de-energized and grounded prior to conducting any maintenance, oil sampling, or oil filling procedures. Failure to comply can result in death or severe personal injury. T239.1 CAUTION: Bushing damage. The split aluminum ring must be replaced if damaged. The clamping ring cushions and distributes the pressure between the bushing flange and the bushing. If bushing clamps are assembled without a new clamping ring, the bushing may be damaged when clamp hardware is tightened. T234.1 ! CAUTION: Equipment damage. Keep work areas clean to prevent debris from accumulating on or in the hydraulic mechanism during disassembly and reassembly of components. Failure to comply can result in hydraulic failure and recloser misoperation. T254.0 ! The operations described in this section should be performed under the cleanest conditions possible. The repair work (except for bushing replacement), will be simplified if the workbench is arranged so the mechanism/head assembly can be inverted (bushings down). No special 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 mechanical damage during the periodic maintenance inspection. Bushings must be replaced whenever damage is discovered. Refer to Figure 10 and proceed as follows: 1. Bypass and remove recloser from service using all locally approved safety practices. 2. Carefully transport the unit to a suitable service facility. 6. Install the bushing assembly (new or reworked) into the head using a new lower bushing gasket. Position the bushing with the stud end of the terminal pointing outward. 7. Position the clamping ring with the split centered between two clamping bolts. 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 can result, compromising the dielectric capabilities of the recloser and can cause possible personal injury. Unequal clamping force can cause bushing breakage. T235.2 ! 8. Reassemble the bushing to the head casting. Tighten the bolts evenly, a little at a time, to a torque of 10-15 ft-lbs. NOTE: Clamping forces must be applied gradually and equally in rotation to each bolt. This results in an evenly distributed gasket sealing pressure 9. Reconnect the lead to the bushing rod. 3. Disconnect the bushing lead from the bottom end of the bushing rod. 4. Remove the three hex-head cap screws and clamps that secure the bushing to the head and lift out the complete bushing assembly. 5. Remove and discard the lower bushing gasket. 6. Depending upon the extent of damage, the complete bushing assembly can be replaced or new ceramic only can be installed. If new ceramic only is to be installed, refer to Figure 11 and proceed as follows: A. Unscrew the bushing terminal and withdraw the rod from the bottom of the bushing ceramic; discard the terminal gasket. B. Insert the rod assembly all the way into the new ceramic, making sure the roll pin is seated in the locking groove in the top of the bushing. C. Assemble the terminal to the bushing rod using a new terminal gasket; tighten to 35 ft-lbs. of torque. NOTE: Apply a very small amount of petroleum jelly to the knurled surface of the inside face of the terminal before assembly to the bushing rod. Figure 10. Removing bushing. 12 ! S280-40-7 SAFETY FOR LIFE Figure 11. Bushing parts. Interrupter Assembly 1. Bypass and remove recloser from service using all locally approved safety practices. 2. Carefully transport the unit to a suitable service facility. 3. Untank the recloser. Refer to Periodic Recloser Inspection and Maintenance section of this manual for untanking procedure. Figure 12. Interrupter Mechanism. 4. Using a 1/2-inch thin wall socket, remove the elastic stop nut (Figure 12) that secures the contact yoke to the lift rod. Gently tap contact arm to remove contacts from the lift rod. 5. Remove the terminal bolt from the top of each stationary contact assembly. 6. Remove hex nuts, flat washers, and lock washers that secure the interrupter assembly to the stringers. 7. Slide the arc interrupter assembly (Figure 13 ) off. NOTE: The arc interrupter and contact assembly and the moving contact assembly are both replaced as complete units. They should both be replaced at the same time. 8. Place the replacement interrupter assembly into position and secure it with the original hardware removed. 9. Install the terminal bolts into each stationary contact assembly. 10. Place the movable contact assembly onto the lift rod and install a new vibration-proof hex nut. NOTE: It is recommended that used elastic stop nuts be replaced 85695KMA Figure 13. Assembled interrupter and stationary contacts, Type WE. 13 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions Closing Solenoid Contactor If the contacts are badly burned or eroded, the entire contactor must be replaced. See Figure 14 and proceed as follows: 1. Unhook the two toggle openings from the pin that connects the operating shaft of the contactor to the toggle arm. 2. Remove the three C-type retaining rings and withdraw the pin. 3. Disconnect the two coil leads from the contactor. NOTE: Reattach the lockwasher and hex nut to the contactor terminal immediately after disconnecting the coil lead to prevent loss of moving contact parts which are attached to the support plate with the same hardware. 4. Disconnect the two fuse leads from the contactor. 5. Remove three hex head capscrews and lockwasher that attach the contactor to the underside of the recloser mechanism frame and remove the contactor. 6. Install the new contactor by reversing the disassembly procedure. Use new C-rings to secure the togglelink pin. 7. Connect the solenoid coil leads to the lower terminals. 8. Connect the fuse leads to the upper terminals. NOTE: Be sure coil and fuse leads are positioned for maximum clearance to other grounded parts. Figure 15. Changing closing solenoid contactor 83373KMA 1. Disconnect the two coil leads from the closing solenoid contactor. IMPORTANT: Reattach the lockwashers and nut to the contactor terminal immediately after disconnecting the coil lead to prevent loss of parts of the moving contact arm assembly which is attached to the support plate with the same hardware. 2. Remove the four capscrews and lockwashers which attach the base plate to the bottom of the solenoid frame posts and lower the coil and base plate. 3. Remove the coil from the base plate and discard the coil gasket. 4. Using a new coil gasket, install the new closing coil on the base plate. NOTE: A new coil gasket is included in the closing coil replacement kit. Figure 14. Changing closing solenoid contactor 83372KMA Closing Solenoid The closing solenoid coil is connected phase-to-phase and is rated to operate at full system voltage. It is protected with two fuses, one on either side. A data plate attached to the recloser head between source side bushings 3 and 5 provides the coil connection information. If the solenoid coil must be replaced, due to damage or change in operating voltage, refer to Figure 15 and proceed as follows: 14 5. Reassemble the base plate to the solenoid frame posts and connect the coil leads to the contactor terminals. IMPORTANT: Make sure the coil leads clear the solenoid frame by at least 1/2-inch. 6. The closing coil replacement kit includes two new coil fuses which should be installed with the new coil. See Closing Solenoid Fuses, following, for fuse replacement procedure. 7. The closing coil replacement kit also includes a new voltage date plate. Replace the plate on the sleet hood of the recloser head if the operating voltage of the recloser is being changed. ! S280-40-7 SAFETY FOR LIFE Closing Solenoid Fuses New fuses are provided with the closing solenoid coil replacement kit and should be installed with the replacement coil. Fuses can also be ordered separately for individual replacement if damaged. A label, attached to the closing coil, specifies the catalog number, and color band coding of the proper fuse required to protect the coil. This information is also listed in Table 5. Mercury Switch SW2 (Microswitch) To replace a closing solenoid fuse: 1. Disconnect the long fuse lead at the closing solenoid contactor. 2. Disconnect the lead wire from the terminal at the other end of the fuse. 3. Loosen the mounting strap and slide out the fuse. Rotary Solenoid 4. Install the new fuse and reconnect the fuse leads. NOTE: Be sure the long fuse lead clears any grounded parts and insulating supports by at least 1/2-inch. TABLE 5 Closing Solenoid Fuse Data Closing Solenoid Voltage* 2.4 – 3.3 kV 4.16 – 6.0 kV 7.2 – 11.0 kV 12 – 24.9 kV Fuse Catalog Number KA259R14 KA259R11 KA259R12 KA259R13 Microswitch SW1 Color Band Two Red Black Yellow Red *Either phase-to-phase or phase-to-ground neutral depending upon coil connection. IMPORTANT: The long fuse lead must clear the grounded parts and insulating supports by at least 1/2-inch. 5. Slightly tilt the fuse so that the open end of the fuse is higher than the closed end. This will allow any air to escape. Replacement of 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, and the 0.2-MFD capacitor are given first. Figure 16 identifies the various components. Note: For WE reclosers above serial number 17309, switches SW1, SW2 and SW3 are microswitches (Catalog Number KP2181A16). For reclosers WE reclosers with serial numbers below 17310 and RXE reclosers of all serial numbers, switches S2 and S3 are mercury switches and should be replaced with microswitches. Mercury Switch to Microswitch Retrofit Kit KA349WE is available for replacement of existing mercury switches with Microswitches. Refer to Service Information S28040-10 Mercury Switch to Microswitch Retrofit Kit KA349WE Installation Instructions for additional information. Mercury Switch SW3 (Microswitch) Trip Solenoid 010041KM Figure 16. Location of circuit components on mechanism frame. A 100-watt soldering iron will meet all requirements for repair work. When resoldering lead connections, use only resin core solder. CPS will assume no responsibility for components having leads connected by means of acid core solder. 0.2-MFD Capacitor The 0.2-MFD capacitor is standard on Type RXE reclosers below serial 800 and Type WE reclosers below serial 6800; it is an option on later units. Label lead connections to the capacitor and proceed as follows: 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 The battery charging current transformer is standard on Type RXE reclosers below serial 800 and Type WE reclosers below serial 6800; it is an option on later units. 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. 15 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions 2. Disconnect the flexible bushing lead. 3. Remove the two screws that secure the current transformer 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 transformer 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 soldering 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. 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 sleeving. 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. 5. Pass sleeving through mounting straps and tighten to secure sleeving. Connect switch leads to proper terminals. Position switch as shown in Figure 17 and secure mounting straps to lever. If switch is positioned opposite to that illustrated in Figure 17, the recloser will operate improperly. Mercury Switch 3 WARNING: Hazardous material. Do not open mercury switches or come in direct contact with switches exhibiting any sign of mercury leakage. Exposure to mercury can cause serious health problems. T281.0 ! 1. Disconnect mercury switch SW3 leads from terminals A and G (Figure 27). 2. Loosen two screws that secure nylon mounting straps to lever pinned to main reclosing shaft. 3. Slip mercury switch from mounting straps when screws are loosened sufficiently. 4. 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. To gain access to the trip solenoid, microswitch 1, mercury switch 2, and rotary solenoid, the recloser mechanism must be removed from the head casting prior to replacement of these components. Refer to the Removing Mechanism from Head section of this manual to for detailed mechanism removal instructions. Mercury Switch 2 WARNING: Hazardous material. Do not open mercury switches or come in direct contact with switches exhibiting any sign of mercury leakage. Exposure to mercury can cause serious health problems. T281.0 ! 1. Disconnect mercury switch SW2 leads from terminals F and G (Figure 27) . 2. Remove the four nylon mounting straps that secure the sleeving to the recloser frame (Figure 17). 3. Remove the faulty switch from its mounting straps. 16 Figure 17. Location of mercury switch 2. 85697KMA Microswitch 1 Refer to Figure 18 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 18. Tighten machine screws. 4. Reconnect the microswitch leads to the two terminals nearest rotary solenoid as shown. ! S280-40-7 SAFETY FOR LIFE Figure 18. Properly installed microswitch 1. 85702KMA 85694KMA Rotary Solenoid Trip Solenoid Refer to Figures 19 and 20 and proceed as follows to replace the rotary solenoid: The trip solenoid, Figure 20, is replaced as follows: 1. Drive out the roll pin that secures the spring lever to the rotary-solenoid shaft. Detach retarding spring from cotter pin. 2. Remove hexnuts and lockwashers that secure the rotary solenoid to the recloser frame. Disconnect solenoid leads from the terminal block and remove rotary solenoid. 3. Remove hexnut spacers and washers from rotarysolenoid 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. 85694KMA Figure 19. Top view of rotary solenoid and associated components 1. Disconnect leads from terminals A and B of the terminal block (Figure 27). 2. Loosen the hexnut that secures the nylon mounting strap to allow lead sleeving to slip through freely. 3. Remove two hexnuts that secure the trip solenoid to the mounting bracket. Detach trip solenoid from bracket. Two lockwashers will be released. 4. Install new solenoid by reversing above procedure. Pass leads through nylon mounting strap and grommet in mechanism frame. Connect leads to terminals A and B of the terminal strip in any order. The trip solenoid is not polarity sensitive. Figure 20. Properly installed trip solenoid. 85698KMA 17 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions Removing Mechanism from Head To gain access to components located in or on the main frame, the following procedure may be used to remove the mechanism from the head. NOTE: These procedures will be simplified if the untanked head and mechanism assembly can be inverted (bushings down). The unit can be supported on its bushings. 1. Disconnect all six bushing leads from the rods at the ends of the bushings. 4. If the recloser is equipped with the CT-type battery charger power source, remove the screws that secure the 0.2 mfd bathtub capacitor to the recloser frame, Figure 23. 5. Disconnect the seven leads connected to the bottom of the terminal block attached to the recloser frame, Figure 24. Be sure all leads are labeled before removing. With the unit inverted as shown in Figure 24, the leads are labeled A, B. C, D, E, R and N from left to right. 2. Disconnect the lockout lever and contact position indicator shafts by disengaging the spring loaded couplers and locking them in the disengaged position, Figure 21. 3. If the recloser is equipped with the auxiliary switch accessory, remove the C or E-ring and washer, Figure 22, and disconnect the operating lever of the switch from the recloser mechanism. Figure 23. Capacitor for CT-type battery charger. Figure 21. Couplers locked in disconnected position. 83374KMA 83376KMA 83377KMA Figure 24. Connections to terminal strip attached to reclose mechanism frame. 6. The lead bundle is secured with a nylon strap attached to the mechanism frame, Figure 24. Remove the attaching screw to free the strap from the mechanism. 7. Remove the six socket head bolts and lockwashers that secure the frame to the head casting and carefully lift the mechanism from the head. Six long pipe spacers will be released when the mechanism is lifted. NOTE: By temporarily substituting eye-bolts for two of the hex head bolts in the bottom of the closing solenoid frame, the mechanism can be easily lifted and handled with a hoist (Figure 25). 83375KMA Figure 22. Remove E-ring to disconnect auxiliary switch operating lever. 18 8. Remove the two spring-loaded couplers disengaged in Step 2 for safekeeping. The components remaining in the head are shown in Figure 26. ! SAFETY FOR LIFE S280-40-7 4. Re-engage the lockout lever and contact position indicator shaft by releasing the shaft couplers. 5. Reconnect the operating lever of the auxiIiary switch (if used) to the mechanism and secure with the washer and E-ring (Figure 22). 6. Attach the 0.2 mfd bathtub capacitor (if present) to the mechanism frame (Figure 23). 7. Reconnect the leads to the respective terminals on the terminal block, and reattach the nylon strap to the frame to secure the lead bundle (Figure 24). 8. Reconnect the bushing leads to their respective bushings. 85700KMA Figure 25. Connection points for lifting mechanism in and out of head. 83379KMA Figure 26. Head casting detached from operating mechanism. Hex socket bolts have been attached to head casting for illustrative purposes. Reinstalling Mechanism into Head To reinstall the recloser mechanism assembly into the head, the following procedure may be used. 1. Install the couplers on the lockout lever and contact position indicator shafts of the mechanism and lock them in the disengaged position. 2. Carefully lower the mechanism assembly onto the six pipe spacers which have been positioned over the attaching holes in the casting (Figure 26). 3. Install the six attaching socket head bolts and tighten evenly to avoid any binding of the mechanism. NOTE: Replace the hex head bolts in the bottom of the closing solenoid frame if eye-bolts were used for handling the recloser mechanism. 19 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions Operational Checks An internal connection diagram of the recloser circuits is shown in Figure 27. The operating sequence for the various circuit components is diagrammed in Figure 28. These components should provide trouble-free operation with little or no maintenance. However, if the recloser does not operate properly, the following checks can be made to trouble-shoot the recloser circuits. Refer to the specific electronic recloser control service information for control checking, testing, and troubleshooting procedures. The recloser need not be untanked to perform these checks. CONTROL CABLE Using an ohmmeter, check the continuity between like pins and pin sockets of the connector plugs on either end of the electronic control cable and for discontinuity between unlike pins and pin sockets to determine the condition of the control cable. NOTE: Pins or pin sockets N and P on either plug are not connected. Repair or replace the control cable if defective. CIRCUIT COMPONENTS (read the effective dc resistance of the closing coil) confirming that the closing solenoid contactor is closed. 4. With the rotary solenoid still energized, manually close the recloser with the closing tool. The ohmmeter should indicate loss of continuity indicating that the closing solenoid contactor has opened. Switches (SW1, SW2, SW3) Table 6 shows switch for manual operating lever/recloser contact combinations. An ohmmeter connected across the designated pin sockets of the control cable receptacle will indicate zero for a closed contact and infinity for an open contact. TABLE 6 Switch Status Recloser Contacts OPEN OPEN CLOSED Manual SW1 Operating Terminals Lever C&D DOWN OPEN UP OPEN UP CLOSED SW2 SW3 Terminals Terminals F&N A&N OPEN CLOSED CLOSED CLOSED CLOSED OPEN CURRENT TRANSFORMERS All measurements are made at the pin sockets of the control cable receptacle on the recloser head. A reading within + 15 percent of the specified value indicates components are operational. Any component failing to meet the specified checks should be replaced. Figure 29 identifies the various circuit components. The current sensing transformers are mounted on the source side bushings underneath the head casting. The battery charger CT power source (if applicable) is mounted on the load side center bushing. NOTE: If the electronic control battery is used to supply the 25 vdc power, connect as directed for only as long as necessary to perform the specified action to prevent excessive battery drain. 1. Connect an ohmmeter, in turn, to pin sockets K and G, K and H, and K and J to check the continuity of the three current sensing transformers. The meter should read approximately 7 ohms, the dc resistance of each winding. Trip-Solenoid 1. Connect an ohmmeter between pin sockets A and B. The meter should read approximately 9.5 ohms. 2. Lift up the yellow manual operating handle under the sleet hood and manually close the recloser with the T-handle closing tool as described on page 9. 3. Momentarily apply 25 vdc to pin sockets A (+) and B (+). The recloser should trip. Rotary Solenoid and Closing Solenoid Contactor 1. Connect an ohmmeter between pin sockets E and F. The meter should read approximately 19 ohms. 2. With the yellow manual operating handle in the up position and the recloser contacts open, momentarily apply 25 vdc to pin sockets F (+) and E (-). The rotary solenoid should operate producing an easily distinguishable sound. Repeat two or three times. 3. Connect the ohmmeter across source side B and C phase bushings, or from source side C bushing to recloser ground (depending upon the recloser coil connection) and again energize the rotary solenoid. The meter should indicate closing coil continuity 20 Continuity Check 2. Connect the ohmmeter to pin sockets K and L to check the continuity of the battery charger CT winding, if used. The meter should read approximately 1000 ohms. A zero ohms reading indicates the 0.2 mfd capacitor may be short-circuited. Readings deviating more than ± 20% from 1000 ohms indicates a damaged resistor or transformer winding. Ratio Test for Sensing CT's 1. Connect all three phases of the recloser in series as shown in Figure 30 and close the recloser contacts with the manual closing tool. 2. Connect a 100 ampere ac test current to test points 1 and 2. 3. Energize the 100 ampere test source. 4. Using a multimeter on the 0-500 milliamp range, check the current output across socket pins K-G, K-H, and K-J (Figure 30A). The output of each CT should measure 100 ma + 10%. NOTE: Be sure to allow for the tolerances of meter being used. The resistance of certain type of meters is not negligible. Use as high a scale (lower resistance) as is accurately readable. ! S280-40-7 SAFETY FOR LIFE A Terminal Strip on Recloser Frame NOTE: Terminals are lettered A thru G, left to right, for illustrative purposes and clarity. They are lettered A thru G, right to left, on the recloser. B A C B D C E D E G F H J K M L N P Control Cable Receptacle on Recloser Head A B G C D Test lead for switches 2 and 3. No connection between "N" Pin in receptacle on recloser and "N" in receptacle on control. (N Pins not wired in Control Cable.) SW2 * SW1 Trip Solenoid F E K L M P N J H G F Pin Socket Configuration Rotary Solenoid SW3 * 100Ω Recloser Contacts 2 A 1 Source Side Load Side 0.2 MFD 100Ω 1000Ω 4 B 3 100Ω Closing Solenoid Contactor Battery Charging Transformer ** Closing Solenoid Coil 6 C 5 SW1 – Microswitch on mainshaft - Closed when closing solenoid plunger is down. (Plunger is down when recloser is closed.) *SW2 – Mercury Switch or Microswitch on Manual Operating Handle - Closed when handle is up in CLOSED position. *SW3 – Mercury Switch or Microswitch on Main Shaft - Open when closing solenoid plunger is down. (Plunger is down when recloser is closed.) *For WE Reclosers below 17310, and RXE reclosers of all serial numbers, *** A B LOW-VOLTAGE DC CLOSING ACC'Y *** A B LOW-VOLTAGE AC CLOSING ACC'Y ***TERMINALS A and B ARE POLARITY INDEPENDENT. switches SW2 and SW3 are mercury switches. Mercury Switch-to-Microswitch Retrofit Kit KA349WE is available to replace existing mercury switches with microswitches. Contact your Cooper Power Systems representative for additional information. **For RXE reclosers below Serial Number 300 and WE reclosers below Serial Number 6800 battery charging transformer is standard. It is supplied as an accessory on later units. Figure 27. Internal Connection Diagram. 21 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions Yellow Manual Operating Lever OPEN CLOSE Signal CLOSED OPEN Switch SW2 CLOSED ENERGIZED Rotary (CLOSING) Solenoid DE-ENERGIZED Closing Solenoid Contactor OPEN CLOSED Closing Solenoid Plunger UP DOWN OPEN Main Contacts CLOSED OPEN Switch SW3 CLOSED OPEN Switch SW1 CLOSED ENERGIZED Trip Solenoid DE-ENERGIZED Auxiliary Switch "A" Contact (Accessory) OPEN CLOSED Auxiliary Switch "B" Contact (Accessory) OPEN CLOSED Note: Diagram shows operational sequence only. It does not have a scaled time base. Figure 28. Sequential Operation of contacts. 22 OPEN Signal ! S280-40-7 SAFETY FOR LIFE Figure 29 Location of mercury switch 2. 85697KMA 85696KMA 5. A 100 mA reading verifies the 1000:1 ratio of the sensing CT’s. If the 100 ma is not attained the CT winding is probably faulty. 6. De-energize the test source. Polarity Test for Sensing CT's 1. With the phases still connected in series from the previous test, connect the secondaries of the CT’s in parallel by connecting pin socket G to H to J and measure the output between pin sockets K and J as shown in Figure 30B. 2. Energize the 100 ampere ac test source. A. All three transformers should have the same polarity; the output should measure 300 ma. B. If one transformer has its polarity opposite of the remaining two the output will measure 100 ma. 3. De-energize the test source and remove the jumper wire from the receptacle. NOTE: Ratio and polarity test-circuits shown are the effective 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. Output Test of Battery Charging CT, if Used 1. With the phases still connected in series, energize 100 ampere ac source. 2. Measure the output between pin socket K and L of the control cable receptacle. The output should measure 40-60 ma. 3. Readings within this range indicate sufficient output to maintain control battery charge. Figure 30. Test Circuit for checking bushing current transformers. 23 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions 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. 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 reclosers that may not be readily locally available. 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: To assure correct receipt of any part order, always include recloser 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 recloser. A—No plating; raw material H—Silver M—Black oxide AlI 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. Q—Cadmium + zinc + chromate Y —Zinc + chromate Z —Electro zinc + bronze irridite 13 6 7 9 21 8 1 10 6 14 11 12 7 15 8 16 3 22 3 4 15 3 17 5 18 6 7 8 Figure 31. Bushing parts group. 24 19 20 23 8 ! S280-40-7 SAFETY FOR LIFE Bushing Parts Group (Figure 31) Item No. 1 2 3 4 5 6 7 8 9 10 11 Description Bushing Assembly—Type RXE (consists of items 9 through 12) 13-inch standard creepage 13-inch standard creepage with BCT accy. 17-inch extra-creepage 17-inch extra-creepage with BCT accy. Bushing Assembly—Type WE (consists of items 9 through 12) 13-inch standard creepage 13-inch standard creepage with BCT accy. 17-inch extra-creepage 17-inch extra-creepage with BCT accy. Hex jam nut, 1/2-20, brass Flat washer Split lockwasher, med. 1/2 bronze Capscrew, hex hd, 3/8-16 x 2-1/4, stl. Bushing clamp Clamping ring Lower bushing gasket Terminal Assembly—Type RXE —Type WE Upper bushing gasket Bushing ceramic—Type RXE Standard creepage Standard creepage with BCT accy. 17-inch extra-creepage 17-inch extra-creepage with BCT accy. Bushing ceramic—Type WE Standard creepage Standard creepage with BCT accy. 17-inch extra-creepage 17-inch extra-creepage with BCT accy. Catalog Number Qty. Per Assy. Item No. 12 KA717R1 6 KA717R2 KA717R3 6 6 KA717R4 6 KA221W1 6 KA221W2 KA221W11 6 6 KA221W12 K88072532050H KP2028A903 6 12 12 K9083050A 6 K730101127225Q KP1109R KP1111 R KP2090A66 KA143L90 KA17W901 KP2090A57 18 18 6 6 1 1 1 KP1110R 1 KP171 W KP1578R 1 1 KP186W 1 KP1110R 1 KP171W KP1246R 1 1 KP186W 1 Description Bushing rod assembly—Type RXE Standard and 17-inch creepage Standard and 17-inch creepage with BCT accy. Bushing rod assembly—Type WE Standard and 17-inch creepage Standard and 17-inch creepage with BCT accy. Catalog Number Qty. Per Assy. KA716R7 1 KA716R11 1 KA716R20 1 KA716R21 1 The following parts are applicable to the bushing current transformer accessory. Quantities shown are for one current transformer. 13 14 15 16 17 18 19 20 21 22 23 Capscrew, hex hd, 3/8-16 x 1-7/8, stl. Transformer clamping flange Flange gasket Replacement current transformer 600:5 multi-ratio 1200:5 multi-ratio CT washer, used with plastic housing CT’s Capscrew, hex hd, 3/8-16 x 1 stl. Transformer clamping sleeve O-ring gasket used with transformer clamping sleeve that has machined groove. old style clamping sleeve, without groove, use KP2090A66. Hex nut, 3/8-16, stl. Stud Bushing spacer K73010137187Q KP170W KP2090A73 3 1 2 KA159W1S KA132WS 1 1 KP312W 1 K730101137100Q KP169W1 3 1 KP2000A64 K880201116037Q KP3149A40 KP275W 1 3 3 1 25 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions 3 4 1 1 12 15 16 13 8 19 17 7 14 18 5 9 10 11 20 6 2 45 48 21 44 49 50 78 79 22 53 25 24 54 47 78 75 74 81 74 82 69 55 52, 53 46 56 27 23 51 43 53 42 35 77 70 30 29 56 59 34 24 28 29 57 59 33 32 29 25 59 58 74 76 26 80 73 72 31 71 62 63 36 64 60 37 61 39 38 41 40 66 67 68 Figure 32. Head and tank parts group. 26 ! S280-40-7 SAFETY FOR LIFE Head and Tank Parts Group (Figure 32) Item No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Description Receptacle and wiring bundle assembly Gasket Capscrew hex hd, 1/4-20 x 3/4, stl. Split lockwasher, med., 1/4, stl. Oil level dipstick O-ring gasket Closing coil instruction plate Self-tapping screw, Type Z. #2 x 5/1 6, sst. Capscrew, hex hd., 1/4-20 x 5/8, stl. Manual closing tool access cover plate Cover plate gasket Capscrew, hex hd., 5/8-11 x 1-1/2, stl. Split lockwasher, med., 5/8, stl. Lifting lug Capscrew, hex, hd, 1/4-20 x 5/8, stl. Split lockwasher, med., 1/4, stl. Auxiiiary switch cover plate Gasket Ground connector Head casting, includes control shaft bushings Head gasket Cable clamp Cable clamp Machine screw, rd., hd., 8-32 x 5/16, stl. Split lockwasher, med., #8, stl. Current transformer support Spacer Current transformer Flat washer, #14S, brass Split lockwasher, med., 1/4 stl. Machine screw, rd., hd, 1/4-20 x 2, stl. Hex nut, 10-24, stl. Split lockwasher, med., #10, stl. Resistor, wirewound, 100 ohm, 25 watt Bracket Machine screw, rd., hd., 10-24 x 2-1/4, stl. Self-tapping screw, Type Z. #4 x 3/16, sst. Voltage data plate Nameplate Type RXE Type WE Thread cutting screw, Type T. #12 x 1/2, sst. Catalog Number KA33RE1 KP611R Qty. per Assy. 1 1 K730101125075Q K900801025000Z KA363R KP2000A9 KP2312R 4 4 1 1 1 K801515002031 A 2 K730101125062Q 2 KP246R1 KP2000A12 1 1 K730101162150Q K900801062000Z KP456H2 2 2 2 K730101125062Q K900801025000Z KP609R KP611 R KA392R 4 4 1 1 1 KA84OR KP2103A8 KP2006A1 KP2006A2 1 1 2 4 K721501108031Z K900801008000Z KP145RE K P3009A38 KA86RE1 K900525026056A K900801025000A 6 6 6 6 3 12 6 K721501125200Z K881001124010Z K900801010000Z 6 3 3 KP4022A31 KP238E 3 3 K721501110225Z 3 K801515004018A KP567R 4 1 KP1RXE KP123WE 1 1 K781515112050A 5 Item No. 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 Description Cover plate Manual operating handle assembly Spacer Retaining ring, Type C, 5/16, sst. WA516 Roll pin, 1/8 x 3/4 Shaft and lever assembly Spacer Flat washer, #14S, brass Cotter pin, 3/32 x 1/2, brass Roll pin, 3/32 x 1/4, stl. Link Pin Retaining ring, Type C, 3/16 sst., WA510 Groove pin Spacer Retaining ring, Type C, 3/8, sst., WA518 Spacer Indicator and support assembly Spacer Groove pin Spacer Capscrew, hex hd., 1/2-13 x 3-1/4, std. Flat washer Pipe plug 1-in., sq. hd. Tank line; kit. Tank Pipe plug, 1/2-in., sq. hd. Oil sample and drain valve assembly Catalog Number Qty. Per Assy. KP283R 1 KA477R KP3009A39 1 1 K970915312000A K970801125075C KA319R KP3007A8 K900525026056A K970525093050A K970801093050C KP137RE KP3190A11 1 1 1 1 1 1 1 1 1 K970915183000A KP3126A4 KP3006A9 3 1 1. K970915375000A KP3013A93 KA19RE KP3013A38 KP3126A4 KP3013A11 2 1 1 3 1 1 K730101150325Q KP2027A23 KP2007A4 KA867R KA88W KP2007A3 10 10 1 1 1 1 KA809R 1 The following parts are applicable to the CT-Type battery charger power source. lt is standard on the Type RXE recloser below serial 300 and Type WE recloser below serial 6800; it is an optional accessory on later units. 69 70 71 72 73 74 75 76 77 78 79 80 81 82 Capacitor 0.2 mfd, 2500 wvdc Split lockwasher, med., #6, stl. Machine screw, rd., hd, 6-32 x 5/16 stl. Hex nut, 10-24, stl. Split lockwasher, med., #10, stl. Flat washer, #14S, brass Resistor, wirewound, 1K, 25W Bracket Machine screw, rd., hd., 10-24 x 2-1/4, stl. Current transformer support Spacer Current transformer Split lockwasher, med., 1/4 stl. Machine screw, rd., hd., 1/1-20 x 2, stl. KP4004A8 K900801006000Z 1 2 K7215011 06031 Z K881001124010Z K90801010000Z K900525026056A KP4022A36 KP238E 2 1 1 3 1 1 K721501110225Z KP145RE KP30O9A38 KA86RE1 K900801025000A 1 2 2 1 2 K721501125200Z 2 27 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions 47 58 52 53 43 54 49 32 50 44 42 59 46 60 55 53 61* 56 57 34 33 51* 52 41 45* 47 52 49 4 48 40 5 32 39 31 62 3 46 35 6 34 32 8 37 33 7 9 38 37 31 36 10 18 20 11 17 16 2 19 11 13 11 1 14 15 12 20 13 12 13 *For WE reclosers above serial number 17309, switches SW1, SW2 and SW3 are microswitches (Catalog Number KP2181A16). 27 22 21 30 28 25 24 26 29 24 25 24 23 Figure 33. Closing coil mechanism parts group. 28 Refer to Figure 16 in the Replacement of Circuit Components section of this manual for a view of the three installed microswitches SW1, SW2, and SW3. For WE reclosers below 17310, and RXE reclosers of all serial numbers, switches SW2 and SW3 are mercury switches and should be replaced with microswitches. Mercury Switch-to-Microswitch Retrofit Kit KA349WE is available to replace existing mercury switches with microswitches. Refer to Service Information S280-40-10 Mercury Switch-to-Microswitch Retrofit Kit KA349WE Installation Instructions and contact your Cooper Power Systems representative for additional information. ! S280-40-7 SAFETY FOR LIFE Closing Coil Mechanism Parts Group (Figure 33) Item No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Description Capscrew, skt. hd., 1/2-13 x 4-1/2, stl. Split lockwasher, med., 1/2, stl. Spacer Operating lever coupler Indicator shaft coupler Contactor toggle spring Groove pin Retaining ring WA514, Type C, 1 /4, stl. Closing solenoid contactor Capscrew with preassembled split lockwasher, 1/4-20 x 1 /2, stl. Machine screw, rd. hd., 1/4-30 x 1/2, brass Split lockwasher, med., 1/4 bronze Hex nut, 1/4-20, brass Fuse retaining clip Closing coil fuse assembly (also included in closing coil replacement kit item 27) 2.4-3.3 kV (2 red color bands) 4.15-6 kV (black color band) 7.2 to 11 kV (yellow color band) 12 to 14.4 kV (red color band) Fuse mounting bracket Lead assembly Flat washer, 3/8 SAE, stl. Groove pin Retaining ring WA518, Type C, 3/8, stl. Plunger and link assembly Upper stringer assembly Hex nut, 3/8-16, stl. Split lockwasher, med., 3/8, stl. Capscrew, hex hd., 3/8-16 x 1-1/4, stl. Solenoid frame Closing coil replacement kit (includes closing coil lower coil gasket, 28, two fuse assemblies, 15, and voltage data plate, 38 Figure 29) 2.4 kV 3.3 kV 4.16-4.8 kV 6.0 kV 7.2-8.32 kV 11.0 kV 12.0-13.2 kV 17.0 kV Reclosers with low voltage closing 48 vdc 125 vdc 250vdc Catalog Number KP2036A3 K900801050000M KP3182A1 KP1177R KP1056R1 KP141 R1 KP13O6R KP970901250000M KA430R3 Qty. Per Assy. 6 6 6 1 1 2 1 4 1 K830101125050A 3 K721525125050A 6 K900830025000A K88102512025A KP2006A16 6 8 2 2 KA259R904 KA259R901 Item No. 28 29 3O 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 KA259R902 KA259R903 KP257L KA28W1 K900201037000A KP3126A2 2 2 2 1 K970901375000M KA50R KA62R K880201116037A K900801037000Z 2 1 4 4 12 K730101137125A KP100R1 12 1 KA834R1 KA834R10 KA834R2 KA834R6 KA834R3 KA839R9 KA834R4 KA834R12 KA834R16† KA834R7† KA834R8† †No fuses are used with the low-voltage dc coils. When converting a recloser for low-voltage operation low-voltage contractor KA568R1 is also required. 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 Description Lower solenoid gasket Solenoid bridge plate assembly Solenoid frame post Machine screw, rd. hd., 8-32 x 3/4 stl. Cable clip Split lockwasher, med., No. 8, stl. Hex nut, 8-32 stl. Trip solenoid assembly Capscrew, hex. hd., 1/4-30 x 1/2, stl. Flat washer, 1/4 SAE, stl. Hex nut, 1/4-20, stl. Insulator Terminal block Machine screw, fil. hd, 6-32 x 5/8, stl. Lead wire assembly Hex nut, 6-32, brass Machine screw, rd. hd., 6-32 x 1/2 brass Mercury switch assembly** (SW 3) Mounting clip Machine screw, rd. hd., 8-32 x 7/16, stl. Machine screw, rd. hd., 6-32 x 1, brass Internal tooth lockwasher No. 6 bronze Hex nut, 6-32, brass Microswitch (SW 1) Rotary solenoid assembly Type RXE below serial 2200 and Type WE below serial 8150 Type RXE above serial 2201 and Type WE above serial 8151 Hex nut, 1/4-28, stl. Flat washer No. 14S, brass Split lockwasher, med., 1/4, stl. Groove pin Retaining ring WA510, Type C, 3/16, stl. Spring Spacer Cotter pin 3/32 x 1, brass Mercury switch assembly** (SW 2) Toggle assembly Type RXE Below Serial No. 2143 Serial No. 2201and above Type WE Below Serial No. 6315 Serial No. 6317 thru 8116 Above Serial No. 8151 Catalog Number Qty. Per Assy. KP389R KA644R1 KP1669R 1 1 4 K721501108075Z KP2006A8 5 7 K900801008000Z K881001132008Z KA11RVE 4 5 1 K730101125050Y K90201025000Z K880201120025Y KP2101A209 KP2101A9 1 2 1 1 1 K721801106062Z KA62RE K881025132006A 2 1 1 K721525106050A Replaced by Microswitch kit KA349WE* KP2006A19 1 1 1 4 K721501108043Z 4 K721525106100A 2 K901032006000A K881025132006A KP2181A16 4 2 1 KA12RE1 1 KA61WE K881001328025Z K900525025056Z K900801025000Z KP3123A3 1 4 2 2 1 K970901188000M KP98L KP3007A30 K970525093100A Replaced by Microswitch kit KA349WE* 2 1 1 1 KA450R3 KA166W 1 1 KAKA450R1 KA450R3 KA166W 1 1 1 1 *Replace mercury switches with KA 349WE Mercury Switch-toMicroswitch Retrofit kit. **For reclosers with three micro-switches (no mercury switches). KP2181A16 is applicable to SW1, SW2, and SW3. 29 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions Figure 34. Interrupter mechanism parts group. 30 ! S280-40-7 SAFETY FOR LIFE Interrupter Mechanism Parts Group (Figure 34) Item No. 1 2 3 4 5 6 7 8 9 10 11 12 Description Capscrew hex hd., 3/8-24 x 7/8 silicon bronze Split lockwasher, med., 3/8, brz. Flat washer, #24S, brass Lead (6 per bushing) Contact Rod Guide Capscrew with preassembled split lockwasher 1/4-20 x 1/2 stl Retaining ring, Type C, 5/16 stl., WA516 Flat washer, 5/16 AN, stl. Groove pin Moving contact rod assembly Type RXE phases A & B Type RXE phase C Type WE, phases A & B Serial No. 1001 through 6315 Serial No. 6316 through 8150 Serial No. 8151 and above Type WE, phase C Serial No. 1001 through 6315 Serial No. 6316 through 8150 Serial No. 8151 and above Stringer assembly Flat washer, 3/8, stl Catalog Number Qty. Per Assy. K700122227087A 6 K900830037000A K900525039087H KP3250A1 KP346W2 6 6 36 3 K830101125050A 6 K970901312000M K900201032056Z KP3125A2 6 6 3 KA44RV2 KA44RV1 2 1 KA95W2 KA29WV2 KA165W2 2 2 2 KA95W1 KA29WV1 KA165W1 KA62R K900201037000A 1 1 1 9 9 Item No. 13 14 15 16 17 18 19 20 21 Description Split lockwasher, med., 3/8, stl. Hex nut, 3/8-16, stl. Interrupter assembly Type RXE phases A & B Type RXE phase C Type WE, phases A & B Serial No. 1001 through 6315 Serial No. 6316 through 8150 Serial No. 8151 and above Type WE, phase C Serial No. 1001 through 6315 Serial No. 6316 through 8150 Serial No. 8151 and above Moving contact assembly Type RXE Type WE Below Serial No. 6316 Serial 6316 and above Roll pin, 1/8 x 5/8, stl. Spacer Flat washer 5/16, stl. Elastic Stop nut, 5/16 Lead Assembly Type RXE (4 per assembly) Type WE (6 per assembly) Catalog Number Qty. Per Assy. K900801037000Z K880201116037A 9 9 KA49RV2 KA49RV1 2 1 KA87W2 KA28WV2 KA168W2 2 2 2 KA87W1 KA28WV1 KA168W1 1 1 1 KA46RV1 3 KA11 W13 KA105DV1 K970801125062M KP1505R K900201 031000Z KP2020A4 3 3 3 3 3 KP3250A1 KP3250A1 24 36 31 Types RXE and WE Electronically Controlled Recloser Maintenance Instructions ADDITIONAL INFORMATION Factory Maintenance Classes CAUTION: This equipment requires routine inspection and maintenance to ensure proper operation. If it is not maintained, it can fail to operate properly. Improper operation can cause equipment damage and possible personal injury. G105.1 The factory service department offers a basic testing and troubleshooting course for electronically controlled reclosers. This course, taught by experienced service technicians, is held at the factory’s in-house training facility. For additional information, contact your Cooper Power Systems representative. ! Replacement Kits Type MET Recloser Control Tester Replacement kits for Kyle reclosers are available through the factory Service Department. To order these kits, refer to the Replacement Parts price list for catalog numbers and pricing. Contact your Cooper Power Systems representative for additional information and order procedures. A 30-minute video cassette program KSPV7 Kyle® Type MET Electronic Recloser Control Tester Operation and Testing Procedures is available as a supplemental training aid for service personnel. Factory-Authorized Service Centers Factory-authorized service centers are located throughout the continental United States to provide maintenance, repair and testing services for Kyle controls and reclosers. For further information, contact your Cooper Power Systems representative. ! SAFETY FOR LIFE ©2004 Cooper Power Systems or its affiliates. Kyle® is a registered trademark of Cooper Power Systems or its affiliates. IEEE Standard C37.60-1981™ and IEEE Standard C37.61-1973™ are trademarks of the Institute of Electrical and Electronic Engineers, Inc. Permatex® and Form-A Gasket® are registered trademarks of Permatex, Inc. 32 1045 Hickory Street Pewaukee, WI 53072 www.cooperpower.com KDL 12/04