S&C Remote Supervisory PMH Pad-Mounted Gear Outdoor Distribution (14.4 kv and 25 kv) INSTRUCTIONS. For Operation

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1 Outdoor Ditribution (14.4 kv and 25 kv) INSTRUCTIONS For Operation Thi publication contain intruction for operation of fue and manual Mini-Rupter Switche in S&C Remote Superviory PMH Pad-Mounted Gear. For operating intruction regarding Type PM Switch Operator or the control-equipment-group component, refer to the applicable S&C intruction heet. TABLE OF CONTENTS Section Page Number INTRODUCTION Qualified Peron General SAFETY INFORMATION Undertanding Safety-Alert Meage Following Safety Intruction Replacement Intruction and Label SAFETY PRECAUTIONS MANUAL SWITCHING WITH MINI-RUPTER Operating the Mini-Rupter Switch Front Barrier FUSING Aembling the Fue Intalling the Fue in the Mounting Warranty Qualification SWITCHING WITH UNI-RUPTER Intalling and Cloing the Fue A Note on Single-Pole Switching Opening and Removing the Fue RE-FUSING How to Detect and Replace a Blown Fue Intalling the Fue in the Mounting Section Page Number MAINTENANCE Component Returning Equipment to Service Encloure Finih APPENDIX A Dielectric Teting APPENDIX B Rating for S&C Mini-Rupter Switche Rating for S&C Power Fue with Uni-Rupter APPENDIX C Control Equipment Group APPENDIX D Optional Feature Acceorie APPENDIX E Current-Limiting Fue for Ue in S&C PMH Pad-Mounted Gear Superede Intruction Sheet dated ç1995 Page 1 of 33

2 Outdoor Ditribution (14.4 kv and 25 kv) INTRODUCTION Qualified Peron Ç WARNING The equipment covered by thi publication mut be intalled, operated, and maintained by qualified peron who are knowledgeable in the intallation, operation, and maintenance of underground electric power ditribution equipment along with the aociated hazard. A qualified peron i one who i trained and competent in: The kill and technique neceary to ditinguih expoed live part from non-live part of electrical equipment. The kill and technique neceary to determine the proper approach ditance correponding to the voltage to which the qualified peron will be expoed. The proper ue of the pecial precautionary technique, peronal protective equipment, inulating and hielding material, and inulated tool for working on or near expoed energized part of electrical equipment. Thee intruction are intended only for uch qualified peron. They are not intended to be a ubtitute for adequate training and experience in afety procedure for thi type of equipment. Ç NOTICE When an S&C Voltage Senor i ued to provide ac power input for an S&C Battery Charger (Catalog Number Suffix -Y1, -Y4, or -Y7 ), the gear mut be applied at ytem line-to-line voltage ranging from kv through 17.0 kv for 14.4-kv model, and from kv through 29 kv for 25-kv model. In addition, when voltage enor are ued to provide ac power input for the battery charger, ingle-phae voltage ening (Catalog Number Suffix -Y1, -Y2, or -Y3 ), or optional three-phae voltage ening (Catalog Number Suffix -W1 ), the voltage enor mut be connected to the voltage limiter at all time. If the voltage enor are diconnected from the voltage limiter while the gear i energized, the voltage enor will be damaged. Ç CAUTION The equipment in thi publication mut be elected for a pecific application. The application mut be within the rating furnihed for the equipment. Rating for thi gear are lited on a rating label on the interior of the door (right-hand door only for double-door model). Page 2 of 33

3 INTRODUCTION Continued General Intruction manual regarding intallation and operation of the pad-mounted gear, witch operator, and controlequipment-group component are included in the Intallation and Operation Information Kit provided with each unit of S&C Remote Superviory PMH Pad-Mounted Gear. Wiring diagram and a catalog dimenional drawing howing cable-locating and anchor-bolt dimenion are alo provided in the information kit. All peronnel involved with intallation and operation of the gear hould be thoroughly familiar with the content of the kit. The following intruction cover operation of fue and manual Mini-Rupter Switche in S&C Remote Superviory PMH Pad-Mounted Gear. For operating intruction regarding Type PM Switch Operator or the controlequipment-group component, refer to the applicable S&C intruction heet. S&C Remote Superviory PMH Pad-Mounted Gear permit automated witching and provide fault protection for underground ditribution ytem. See Figure 1, 2, and 3. Thi gear contain the following: 600-ampere S&C Mini-Rupter Switche for three-pole live witching of three-phae ource circuit. Type PM Switch Operator to provide power operation of the aociated Mini-Rupter Switche. Control-equipment-group component (ee Appendix C) and interconnecting-control-wiring bae pacer with low-voltage wiring for each witch operator or 400-ampere hooktick-operated S&C Power Fue with Uni-Rupter for ingle-pole live witching of ingle-phae or three-phae load circuit. Model available offer a choice of S&C Type SML-20 or SML-4Z Power Fue, S&C Fault Fiter Electronic Power Fue, or a variety of ingle-barrel current-limiting fue. Penta-Latch Mechanim on door for acce control. Mechanim provide automatic door latching and permit padlocking only when the door i latched cloed. Door can be opened only with a pentahead ocket wrench or tool except when hexhead actuator (Catalog Number Suffix -B1 or -B2 ) are pecified. A variety of optional feature are available for S&C Remote Superviory PMH Pad-Mounted Gear. The catalog number tamped on the nameplate affixed to the encloure door i uffixed with letter-number combination applicable to the gear furnihed. Refer to Appendix D for decription of the optional feature. Low-voltage compartment contain a WESDAC DART RTU (Catalog Number Suffix -Y1 ) or mounting proviion for a uerupplied and intalled RTU (Catalog Number Suffix -Y2, -Y3, or -Y4 ) Penta-Latch Mechanim Type PM Switch Operator for power operation of aociated Mini-Rupter Switch Interconnecting-control-wiring bae pacer hield low-voltage wiring from high voltage Figure 1. Remote uperviory Model PMH-9 with Type PM Switch Operator and low-voltage compartment. When furnihed with the communication and control equipment group (Catalog Number Suffix -Y1 ), the WESDAC DART (Ditribution Automation Remote Terminal) by Wetronic, Inc. i provided in the low-voltage compartment. Page 3 of 33

4 Outdoor Ditribution (14.4 kv and 25 kv) INTRODUCTION Continued Dual-purpoe front barrier guard againt inadvertent contact with live part when in normal vertical poition. Inerted into open gap of a fue, barrier provide iolation from bu and upper contact S&C Penta-Latch Mechanim provide automatic three-point door latching only after actuator i ecured can a padlock be intalled S&C Uni-Rupter Compartment-identification and phae-identification label Storage rack hold up to ix SM-4 Refill Unit or three SMU-20 Fue Unit Interphae and end barrier Grappler the S&C fue-handling fitting Ground tud Terminal accept a wide variety of field aembled cable-terminating device Fault Fiter Electronic Power Fue with Uni-Rupter SML-20 Power Fue with Uni-Rupter Figure 2. Fue-ide view of a Model PMH-9 with SML-20 Power Fue in the right-hand compartment and Fault Fiter Electronic Power Fue in the left-hand compartment. (Thi nontandard combination of fue i hown for comparion only.) Page 4 of 33

5 INTRODUCTION Continued Viewing window for viible verification of witch poition i removable for phaing. To remove window, looen wing-head crew and lift window off alignment bolt Left-hand door retainer rotate latch upward to open door. To ecure left-hand door cloed, rotate latch downward over top mounted on outer edge of door Optional mounting proviion for uer-upplied fault indicator Main bu Door holder Ground pad on inide at bottom door tile in each compartment, accommodate connector for attachment of cable concentricneutral ground lead and ground tud Ground tud Intruction manual holder Optional fue-torage feature Interphae and end barrier Circuit diagram Dual-purpoe front barrier guard againt inadvertent contact with live part when in normal vertical poition. Inerted into open gap of a witch, barrier provide iolation from bu and upper contact Figure 3. Switch-ide view of a Model PMH-9. S&C Mini-Rupter Switch manually operated witche are furnihed with a manual operating handle which fold for torage behind the witch-operatinghub cover Page 5 of 33

6 Outdoor Ditribution (14.4 kv and 25 kv) SAFETY INFORMATION Undertanding Safety-Alert Meage There are everal type of afety-alert meage which may appear throughout thi intruction heet a well a on label affixed to the S&C Remote Superviory PMH Pad-Mounted Gear. Familiarize yourelf with thee type of meage and the importance of the variou ignal word, a explained below. Ç DANGER DANGER identifie the mot eriou and immediate hazard which will likely reult in eriou peronal injury or death if intruction, including recommended precaution, are not followed. Ç WARNING WARNING identifie hazard or unafe practice which can reult in eriou peronal injury or death if intruction, including recommended precaution, are not followed. Ç CAUTION CAUTION identifie hazard or unafe practice which can reult in minor peronal injury or product or property damage if intruction, including recommended precaution, are not followed. Following Safety Intruction Ç NOTICE Thoroughly and carefully read thi intruction heet before operating your S&C Pad-Mounted Gear. If you do not undertand any portion of thi intruction heet and need aitance, contact your nearet S&C Sale Office or S&C Authorized Ditributor, or call S&C Headquarter at (312) , Monday through Friday between 8:30 AM and 5:00 PM Central Standard Time. (In Canada, call S&C Electric Canada at (416) ) Replacement Intruction and Label If you need additional copie of thi intruction heet, contact your nearet S&C Sale Office or S&C Authorized Ditributor, or call S&C Headquarter. It i important that any miing, damaged, or faded label on the equipment be replaced immediately. Replacement label are available by contacting your nearet S&C Sale Office, S&C Authorized Ditributor, S&C Headquarter, or S&C Canada. Ç NOTICE NOTICE identifie important procedure or requirement that, if not followed, can reult in product or property damage if intruction are not followed. Page 6 of 33

7 SAFETY PRECAUTIONS Ç DANGER Pad-mounted gear contain high voltage. Failure to oberve the precaution below will reult in eriou injury or death. Some of thee precaution may differ from company operating procedure and rule. Where a dicrepancy exit, uer hould follow their company operating procedure and rule. 1. QUALIFIED PERSONS. Acce to pad-mounted gear mut be retricted only to qualified peron. See Qualified Peron on page SAFETY PROCEDURES. Alway follow afe operating procedure and rule. 3. PERSONAL PROTECTIVE EQUIPMENT. Alway ue uitable protective equipment uch a rubber glove, rubber mat, hard hat, afety glae, and flah clothing in accordance with afe operating procedure and rule. 4. SAFETY LABELS. Do not remove or obcure any of the CAUTION, WARNING, or DANGER label. 5. KEY INTERLOCKS. v If optional key interlock were furnihed, they mut be in place. v Check the operating equence of key interlock to verify proper equencing. v After the pad-mounted gear i intalled, either: (1) detroy the extra et of key or (2) make them acceible only to qualified peron. Thi will maintain the integrity of the key-interlock cheme. v Key interlock are not ecurity lock and are not ubtitute for padlock. 6. OPENING DOORS. Do not force door open. Forcing a door open can damage the latching mechanim. If optional key interlock are furnihed, correctly poition the interlock o the door can be opened. 7. CLOSING AND LOCKING DOORS. v Door mut be ecurely cloed and latched, with padlock in place at all time unle work i being performed inide the encloure. v Manual Mini-Rupter Switche have witch-operating-haft acce cover located on the ide of the pad-mounted gear encloure. They mut be cloed and padlocked at all time unle the witche are being operated. v Do not cloe a door on a fue in the open poition. The door will trike the fue pull ring which will interfere with door cloing. The door may be cloed if the fue i removed from the mounting. 8. ENERGIZED TERMINALS. Alway aume that both et of power terminal on any Mini-Rupter Switch or fue are energized unle proved otherwie by tet, by viual evidence of open-circuit condition on both et of terminal, or by oberving that both et of terminal are grounded. 9. BACKFEED. Mini-Rupter Switche, witch terminal, fue, and fue mounting (Uni-Rupter, load-ide hinge, and terminal) may be energized by backfeed. 10. DE-ENERGIZING. Before touching any device that i to be inpected, replaced, erviced, or repaired in the high-voltage compartment, alway diconnect Mini-Rupter Switche, fue, and other device uch a voltage enor from all power ource (including backfeed) and control ource, tet for voltage, and properly ground. 11. TESTING. Tet for voltage on both et of power terminal of any Mini-Rupter Switch or fue uing proper high-voltage tet equipment before touching any device that i to be inpected, replaced, erviced, or repaired in the high-voltage compartment. 12. GROUNDING. v Make ure that the pad-mounted gear encloure i properly grounded to the tation or facility ground. v After the gear ha been completely diconnected from all ource of power and teted for voltage, intall uitable grounding cable in all compartment before touching any device that i to be inpected, replaced, erviced, or repaired in the high-voltage compartment. 13. SWITCH POSITION. v Alway confirm the open/cloe poition of the Mini-Rupter Switche by viually oberving the poition of the witch blade. v Switche and witch terminal may be energized by backfeed. v Switche and witch terminal may be energized in any poition. Continued v Page 7 of 33

8 Outdoor Ditribution (14.4 kv and 25 kv) SAFETY PRECAUTIONS Continued Ç DANGER Continued Pad-mounted gear contain high voltage. Failure to oberve the precaution below will reult in eriou injury or death. Some of thee precaution may differ from company operating procedure and rule. Where a dicrepancy exit, uer hould follow their company operating procedure and rule. 14. FUSE POSITION. Fue and fue mounting (Uni- Rupter, load-ide hinge, and terminal) may be energized by backfeed even when the fue i in the fully open poition. 15. S&C GRAPPLER. v The Grappler (Catalog Number 4423) i the S&C fue-handling fitting upplied with each unit equipped for fue. v The Grappler improve grip, balance, and control of fue during handling. v Alway ue the S&C Grappler attached to a uitable univeral pole (1¹ ₄ diameter) to handle barrier and to intall, remove, open, or cloe fue. The univeral pole mut be at leat 4 feet long (S&C Catalog Number 4451R2-E, or equal) for 14.4-kv gear or at leat 6 feet long (S&C Catalog Number 4452R2-E, or equal) for 25-kv gear. 16. MAINTAINING PROPER CLEARANCE. v When working in the high-voltage compartment, alway maintain proper clearance from energized component. v When handling barrier or when intalling, removing, opening, or cloing fue, alway ue an S&C Grappler attached to a uitable univeral pole (ee 15 above). 17. DUAL-PURPOSE FRONT BARRIERS. v Alway ue an S&C Grappler attached to a uitable univeral pole to handle barrier in the high-voltage compartment. v Do not leave dual-purpoe front barrier in the lide-in poition for more than one week. If the barrier are left in the lide-in poition for an extended period of time, there i the poibility of corona dicharge to the barrier. Prolonged expoure to corona dicharge can damage the barrier and reult in a flahover, injury, and equipment damage. v Switch Side: Thee barrier are intended for temporary ue to iolate the blade of the Mini-Rupter Switch from the main contact while work i being performed. v Fue Side: Thee barrier are intended for temporary ue to iolate the fue from the contact of the Uni-Rupter while work i being performed. 18. CLOSING FUSES. Cloing a fue into a faulted circuit will caue a loud noie, a flah of light at the Uni-Rupter contact, and the fue to blow. Cloing a fue into a faulted circuit i alway a poibility. When cloing a fue, alway turn your face away then ue a wift, unheitating thrut ince the cloing operation i completely operator dependent. With Uni-Rupter, the fue can be cloed into a fault current once or twice a pecified in Appendix B, and the Uni-Rupter will remain operable and able to carry and interrupt rated current. 19. FUSE STORAGE AND HANDLING. v Alway tore fue in a clean, dry location. v Never tore end fitting, holder, interrupting module, or fue in high-voltage compartment unle the unit i equipped with the optional fue-torage feature (Catalog Number Suffix -E1, -E2, or -E3 ). v If equipped with the fue-torage feature, do not handle pare fue unle dual-purpoe front barrier for witche are in their normal, upended poition to help avoid contact with live part. Page 8 of 33

9 MANUAL SWITCHING WITH MINI-RUPTER The following intruction are for operation of manual Mini-Rupter Switche. For Mini-Rupter Switche operated by Type PM Switch Operator, refer to Intruction Sheet Complete rating for Mini-Rupter a applied in S&C Remote Superviory PMH Pad-Mounted Gear are hown in Appendix B. Before proceeding, refer to the DANGER on page 7 and 8. Operating the Mini-Rupter Switch 1. Remove the padlock and open the witch-operatinghaft acce cover. See Figure Remove the folding witch-operating handle from it torage pocket behind the acce cover. Unfold the handle and lide it onto the hex witch-operating haft. Note the witch-poition indicator which i attached to the hex witch-operating haft and ret againt a top in either the open or cloed poition. Arrow indicate witch-open or witch-cloed poition. 3. Rotate the handle in the appropriate direction to open or cloe the witch, and check the witch-poition indicator to verify that the witch i in the deired poition. Ç WARNING Alway confirm the open/cloe poition of the Mini- Rupter Switch by viually oberving the poition of the witch blade. 4. Remove and fold the witch-operating handle, and return the handle to it torage poition. Then cloe and padlock the acce cover. Ç CAUTION Do not leave the witch-operating-haft acce cover unlocked if the gear i left unattended by qualified peron. Hood hield padlock hackle Hex witch-operating haft Folding witch-operating handle in operating poition Folding witch-operating handle in torage pocket Switch-poition indicator Acce cover in padlocked poition Acce cover opened Connection diagram Figure 4. Switch-operating handle acce. Page 9 of 33

10 Outdoor Ditribution (14.4 kv and 25 kv) MANUAL SWITCHING WITH MINI-RUPTER Continued Front Barrier Ç DANGER When working in the high-voltage compartment, alway maintain proper clearance from energized component. Failure to maintain proper clearance will reult in eriou injury or death. Alway ue an S&C Grappler (Catalog Number 4423) attached to a uitable univeral pole (1¹ ₄ inche in diameter) to handle barrier and to intall, remove, open, or cloe fue. The univeral pole mut be at leat 4 feet long (S&C Catalog Number 4451R2-E, or equal) for 14.4-kv gear or at leat 6 feet long (S&C Catalog Number 4452R2-E, or equal) for 25-kv gear. Place the dual-purpoe front barrier in the lide-in poition whenever the Mini-Rupter Switch i open. When the barrier i in the lide-in poition, the witch blade are iolated from the main contact. Thi alo keep the blade from cloing if, for any reaon, the Mini-Rupter Switch i operated. To inert the barrier in the lide-in poition, ue an S&C Grappler attached to and in line with a uitable univeral pole. Figure 5 through 7 how the uggeted inertion method. The Grappler prong are pointed upward when lifting the front barrier. Ç WARNING Do not leave dual-purpoe front barrier in the lide-in poition for more than one week. Thee barrier are intended for temporary ue to iolate the blade of the Mini-Rupter Switch from the main contact while work i being performed. If the barrier are left in the lidein poition for an extended period of time, there i the poibility of corona dicharge to the barrier. Prolonged expoure to corona dicharge can damage the barrier and reult in a flahover, injury, and equipment damage. Ç NOTICE Before cloing a Mini-Rupter Switch, remove the dualpurpoe front barrier from the lide-in poition. Cloing a witch on the barrier will block the witch blade and reult in a talled condition. If the Mini-Rupter Switch i inadvertently cloed with the front barrier in the lide-in poition, it will be neceary to unblock the blade. To do thi, rotate the witchoperating handle all the way to the OPEN poition. Thi will return the blade to the open poition. If a poweroperated Mini-Rupter Switch i cloed with the dual-purpoe front barrier in the lide-in poition, refer to IF OPERATOR STALLS in Intruction Sheet Figure 5. Dual-purpoe front barrier for witch in it normal, upended poition. Page 10 of 33 Figure 6. Grappler being ued to lift barrier. Note that door holder i in place and adjacent door i latched cloed to reduce expoure to high voltage.

11 MANUAL SWITCHING WITH MINI-RUPTER Continued To retore the dual-purpoe front barrier to the normal upended poition, ue an S&C Grappler attached to a uitable univeral pole. With the Grappler prong pointed upward (a hown in Figure 7), lowly and carefully withdraw the barrier o that, a it clear the lide-in poition, the hole in the barrier catch on the hook of the gear. Then lower the barrier to it normal, upended poition. (If, for any reaon, the barrier wa completely removed from the encloure, a uggeted method of placing it in it normal, upended poition i hown in Figure 8. Note that the barrier i upported on the Grappler prong and held there by engagement of the lifting ring with the Grappler cone. Place the barrier on the hook of the gear, and lower the barrier to it upended poition.) Figure 7. Grappler, after lifting and pivoting the barrier, i ued to lower it into the lide-in poition. Alo how Grappler being ued to return the barrier to it normal, upended poition. Figure 8. Alternate method of replacing front barrier uing Grappler. Inet how cloe-up of Grappler in poition to replace the barrier. Page 11 of 33

12 Outdoor Ditribution (14.4 kv and 25 kv) FUSING S&C Remote Superviory PMH Pad-Mounted Gear i furnihed with S&C Fue Mounting with Uni-Rupter that accommodate S&C Type SML-20 Power Fue, S&C Type SML-4Z Power Fue, or S&C Fault Fiter Electronic Power Fue. Fault Fiter Electronic Power Fue Mounting alo accommodate a variety of current-limiting fue. Ç WARNING When electing current-limiting fue, the voltage rating of the fue mut conform to the recommendation in Appendix E. Failure to conform to thee recommendation can reult in a flahover, injury, and equipment damage. Aembling the Fue S&C Power Fue Intall an SMU-20 Fue Unit into each et of end fitting, an SM-4 Refill Unit into each holder, or a Fault Fiter Interrupting Module and Control Module into each holder, in accordance with the intruction heet furnihed with the fue unit, refill unit, or interrupting module. Current-Limiting Fue S&C Holder for current-limiting fue are deigned for ue in pad-mounted gear model that include mounting for Fault Fiter Electronic Power Fue. Thee holder will accommodate the current-limiting fue lited in Appendix E. For intruction on intalling current-limiting fue in current-limiting fue holder, refer to S&C Intruction Sheet Intalling the Fue in the Mounting Follow the intruction found under Intalling and Cloing the Fue on page 13 through 16. Warranty Qualification The tandard warranty contained in eller tandard condition of ale (a et forth in Price Sheet 150) doe not apply to S&C Remote Superviory PMH Pad-Mounted Gear where fue unit, fue-unit end fitting, holder, refill unit, or witch blade of other than S&C manufacture are ued in conjunction with S&C SML Mounting. Nor doe it apply to S&C Remote Superviory PMH Pad-Mounted Gear where other than Fault Fiter Electronic Power Fue, S&C Switch Blade, or the current-limiting fue lited in Appendix E are ued in conjunction with Fault Fiter Electronic Power Fue Mounting and S&C Holder deigned therefor, or when current-limiting fue are applied other than a et forth under Recommended Voltage Rating for current-limiting fue in Appendix E. Page 12 of 33

13 SWITCHING WITH UNI-RUPTER Intalling and Cloing the Fue Before proceeding with the intruction on intalling and cloing the fue,d refer to the DANGER on page 7 and 8. Ç DANGER When working in the high-voltage compartment, alway maintain proper clearance from energized component. Failure to maintain proper clearance will reult in eriou injury or death. Alway ue an S&C Grappler (Catalog Number 4423) attached to a uitable univeral pole (1¹ ₄ inche in diameter) to handle barrier and to intall, remove, open, or cloe fue. The univeral pole mut be at leat 4 feet long (S&C Catalog Number 4451R2-E, or equal) for 14.4-kv gear or at leat 6 feet long (S&C Catalog Number 4452R2-E, or equal) for 25-kv gear. Ue an S&C Grappler attached to and in line with a uitable univeral polel to perform the procedure lited below: 1. Open the appropriate fue-compartment door and ecure it with the door holder. See Figure 9. On doubledoor model, the adjacent compartment door hould be cloed and latched to minimize expoure to high voltage. 2. If optional inner barrier panel (Catalog Number Suffix -G7 ) are furnihed, looen the pentahead bolt and remove the panel. Then remove only the dual-purpoe front barrier aociated with the fue mounting into which the fue will be intalled. See Figure 10. Inert the barrier into the lide-in poition uing the Grappler a illutrated in Figure 11. Note that the barrier i upported on the Grappler prong and held there by engagement of the lifting ring with the Grappler cone. Ç WARNING Do not leave dual-purpoe front barrier in the lide-in poition for more than one week. Thee barrier are intended for temporary ue to iolate the fue from the contact of the Uni-Rupter while work i being performed. If the barrier are left in the lide-in poition for an extended period of time, there i the poibility of corona dicharge to the barrier. Prolonged expoure to corona dicharge can damage the barrier and reult in a flahover, injury, and equipment damage. d Although the operation a decribed in thi ection often refer imply to fue, the procedure apply to S&C Type SML-20 and SML-4Z Power Fue, S&C Fault Fiter Electronic Power Fue, and current-limiting fue ued in Fault Fiter Electronic Power Fue Mounting with Uni- Rupter. l If the encloure i furnihed with an optional bae pacer (or i attached to a higher than normal mounting pad), it may be deirable, for eaier handling at the increaed height, to repoition the Grappler on the univeral pole at a favorable angle. Door holder S&C Grappler in torage poition Storage rack for S&C SMU-20 Fue Unit or SM-4 Refill Unit Figure 9. Dual-purpoe front barrier for fue in their normal, upended poition. Note that door holder i in place. Figure 10. Removing or replacing dual-purpoe front barrier with the S&C Grappler. Page 13 of 33

14 Outdoor Ditribution (14.4 kv and 25 kv) SWITCHING WITH UNI-RUPTER Continued 3. For all fue except 25-kv Fault Fiter Electronic Power Fue, intall a fue into it hinge a follow: a. Poition the Grappler cone in the fue pull ring and cradle the fue in the Grappler prong. See inet of Figure 12. b. Grap the univeral pole with both hand (approximately 2 feet apart), with one hand at the oppoite end of the pole from the Grappler. c. Lift the fue and lower it into it hinge. See Figure 12. Make ure that the fue i ecurely eated in the hinge; then diengage the Grappler from the fue. See Figure For 25-kv Fault Fiter Electronic Power Fue, de-energize, tet, and properly ground the mounting in accordance with afe operating procedure and rule, and then intall the fue into it mounting by hand uing uitable protective equipment. Ç NOTICE Do not cloe a door on a fue in the open poition. The door will trike the fue pull ring which will interfere with door cloing. The door may be cloed if the fue i removed from it mounting. Ç DANGER Keep the fue away from the Uni-Rupter contact when intalling the fue into it hinge. Touching the contact will cloe the circuit which can caue a flahover and eriou injury. Alway place the dualpurpoe front barrier in the lide-in poition whenever a fue i open or i being removed from or intalled into it hinge. Figure 11. Inerting dual-purpoe front barrier into the "lide-in" poition uing Grappler. Figure 12. Intalling fue uing Grappler. Inet how cloe-up of Grappler in poition to intall the fue. Page 14 of 33

15 SWITCHING WITH UNI-RUPTER Continued 5. Ue the Grappler to remove the dual-purpoe front barrier from the lide-in poition. See Figure 14. Ç DANGER Cloing a fue into a faulted circuit will caue a loud noie, a flah of light at the Uni-Rupter contact, and the fue to blow. Cloing a fue into a faulted circuit i alway a poibility. When cloing a fue, alway turn your face away then ue a wift, unheitating thrut ince the cloing operation i completely operator dependent. With Uni-Rupter, a fue can be cloed into a fault current once or twice a pecified in Appendix B and the Uni-Rupter will remain operable and able to carry and interrupt rated current. 6. With the Grappler prong pointed downward, inert the longer prong into the pull ring of the fue. See inet of Figure 15. Then with one face turned away, cloe the fue with a wift, unheitating thrut. See Figure 15. Remove the Grappler from the pull ring. Ç NOTICE After removing the Grappler from the pull ring, make ure that complete fue cloure wa attained by puhing againt the fue with the Grappler. Failure to completely cloe the fue can reult in damage to the Uni-Rupter. 7. Ue the Grappler to hang the dual-purpoe front barrier in it normal, upended poition. See Figure 10. Alo intall the optional inner barrier panel, if furnihed. 8. Cloe and latch the door and intall a padlock. Pull on the door to verify that they are ecurely latched. Figure 13. Fue intalled in mounting in the open poition. Figure 14. Removing dual-purpoe front barrier from the lide-in poition uing Grappler. Page 15 of 33

16 Outdoor Ditribution (14.4 kv and 25 kv) SWITCHING WITH UNI-RUPTER Continued Uni-Rupter Figure 15. Cloing the fue. Inet on right how cloe-up of Grappler in poition to cloe the fue. Top inet how cloe-up of Uni-Rupter with the fue fully cloed. Page 16 of 33

17 SWITCHING WITH UNI-RUPTER Continued Ç WARNING A Note on Single-pole Switching In ingle-pole witching of ungrounded-primary threephae tranformer or bank (or ingle-phae tranformer connected line-to-line), circuit connection or parameter may, in ome cae, produce exceive overvoltage. In particular, for the following application above 22 kv, ingle-pole witching by any mean including Uni- Rupter hould be performed only under the condition tated in italic: Switching unloaded or lightly loaded delta-connected or ungrounded-primary wye-wye connected threephae tranformer or bank (or line-to-line connected ingle-phae tranformer), rated 150 kva or le threephae, or 50 kva or le ingle-phae or of any kva rating when combined with unloaded cable or line where maximum ytem operating voltage exceed 22 kv. Single-pole witching hould be performed only if each phae i carrying 5% load or more, or if the tranformer or bank i temporarily grounded at the primary neutral during witching. Switching loaded or unloaded ungrounded-primary wye-delta connected three-phae tranformer or bank alone or combined with unloaded cable or line where maximum ytem operating voltage exceed 22 kv. Single-pole witching hould be performed only if each phae i carrying 5% load or more and if the lighting-load phae i alway witched open firt (or witched cloed lat); or if the tranformer or bank i temporarily grounded at the primary neutral during witching. Opening and Removing the Fue Before proceeding with the intruction on opening and removing the fue, refer to the DANGER on page 7 and With the Grappler prong pointed downward, inert the longer prong into the pull ring of the fue. See Figure 16. Ç DANGER When working in the high-voltage compartment, alway maintain proper clearance from energized component. Failure to maintain proper clearance will reult in eriou injury or death. Alway ue an S&C Grappler (Catalog Number 4423) attached to a uitable univeral pole (1¹ ₄ inche in diameter) to handle barrier and to intall, remove, open, or cloe fue. The univeral pole mut be at leat 4 feet long (S&C Catalog Number 4451R2-E, or equal) for 14.4-kv gear or at leat 6 feet long (S&C Catalog Number 4452R2-E, or equal) for 25-kv gear. Ue an S&C Grappler attached to and in line with a uitable univeral pole to perform the procedure lited below: 1. Open the appropriate fue-compartment door and ecure it with the door holder. See Figure 9. On doubledoor model, the adjacent door hould be cloed and latched to minimize expoure to high voltage. 2. If optional inner barrier panel (Catalog Number Suffix -G7 ) are furnihed, looen the pentahead bolt and remove the panel. Then remove only the dual-purpoe front barrier aociated with the fue to be opened, uing the Grappler for thi purpoe. See Figure 10. Figure 16. Grappler, a poitioned for opening troke, with longer prong inerted in the fue pull ring. Page 17 of 33

18 Outdoor Ditribution (14.4 kv and 25 kv) SWITCHING WITH UNI-RUPTER Continued 4. Pull the fue vigorouly through it full travel without heitation at any point. See Figure 17. A downward force hould be maintained on the univeral pole through the fue-opening operation to counteract any tendency the fue may have to bounce toward the cloed poition. NOTE: The Uni-Rupter i deigned to require a hard pull to unlatch the fue, thu reducing the poibility of an incomplete opening operation. 5. Remove the Grappler from the fue pull ring. Ç DANGER The fue and fue mounting (Uni-Rupter, load-ide hinge, and terminal) may be energized by backfeed even when the fue i in the fully open poition. Alway aume that both terminal of a fue are energized unle proved otherwie by tet, by viual evidence of open-circuit condition on both terminal, or by oberving that both terminal are grounded. Failure to follow thee precaution can reult in eriou injury or death. Ç NOTICE Do not cloe a door on a fue in the open poition. The door will trike the fue pull ring which will interfere with door cloing. The door may be cloed if the fue i removed from it mounting. 6. Place the dual-purpoe front barrier aociated with the fue to be removed in the lide-in poition. Ue the Grappler for thi, a illutrated in Figure 18. Note that the barrier i upported on the Grappler prong and held there by engagement of the lifting ring with the Grappler cone. Ç WARNING Do not leave dual-purpoe front barrier in the lide-in poition for more than one week. Thee barrier are intended for temporary ue to iolate the fue from the contact of the Uni-Rupter while work i being performed. If the barrier are left in the lide-in poition for an extended period of time, there i the poibility of corona dicharge to the barrier. Prolonged expoure to corona dicharge can damage the barrier and reult in a flahover, injury, and equipment damage. 7. For all fue except 25-kv Fault Fiter Electronic Power Fue, remove the fue from it hinge a follow: a. Grap the univeral pole with both hand (approximately 2 feet apart), with one hand at the oppoite end of the pole from the Grappler. b. Poition the Grappler cone in the fue pull ring and cradle the fue in the Grappler prong. See Figure 19. c. Stand in a normal, upright poition facing the univeral pole. Move the pole forward until reitance between the Grappler and the fue i felt (approximately 2 inche). Then remove the fue from it hinge with a forward and upward lifting motion. See Figure 20. Ç DANGER Keep the fue away from the Uni-Rupter contact when removing the fue from it hinge. Touching the contact will cloe the circuit which can caue a flahover and eriou injury. Alway place the dualpurpoe front barrier in the lide-in poition whenever a fue i open or i being removed from or intalled into it hinge. Page 18 of 33

19 SWITCHING WITH UNI-RUPTER Continued Figure 17. Opening the fue. Figure 19. Grappler poitioned for fue removal. Figure 18. Inerting dual-purpoe front barrier into the lide-in poition uing Grappler. Figure 20. Removing fue uing the Grappler. Page 19 of 33

20 Outdoor Ditribution (14.4 kv and 25 kv) SWITCHING WITH UNI-RUPTER Continued 8. For 25-kv Fault Fiter Electronic Power Fue, de-energize, tet, and properly ground the mounting in accordance with afe operating procedure and rule, and then remove the fue from it mounting by hand uing uitable protective equipment. 9. Hang the dual-purpoe front barrier in it normal, upended poition uing the Grappler. See Figure 10. Alo intall the optional inner barrier panel, if furnihed. Then cloe and latch the door, and padlock ecurely. Pull on the door to verify that they are ecurely latched. Ç WARNING Alway tore fue in a clean, dry location. Do not tore end fitting, holder, interrupting module, or currentlimiting fue in high-voltage compartment unle the unit i equipped with the optional fue-torage feature (Catalog Number Suffix -E1, -E2, or -E3 ). The optional fue-torage feature, if furnihed, can accommodate three completely aembled pare Type SML Fue, two pare Fault Fiter Interrupting Module, one pare Fault Fiter Electronic Power Fue Holder, or one pare current-limiting fue holder in each witch compartment, a applicable. The fue-torage feature i mounted inide the encloure, between the interrupter witch and the ide wall of the encloure. For torage, orient the aembled fue in the fue-torage feature a hown on the label headed STORAGE AND HANDLING OF SPARE FUSES that i affixed to the inide of each applicable witch-compartment door. Ç DANGER Do not handle pare fue unle front barrier for witche are in their normal, upended poition to guard againt inadvertent contact with live part. Failure to follow thi precaution can reult in eriou injury or death. Page 20 of 33

21 RE-FUSING How to Detect and Replace a Blown Fue Open the appropriate fue-compartment door and ecure it with the door holder. Ç WARNING To minimize expoure to high voltage on double-door model, cloe and latch the adjacent door. Alo remove the dual-purpoe front barrier (uing the Grappler) or inner barrier panel, if furnihed. Ç DANGER When working in high-voltage compartment, alway maintain proper clearance from energized component. Failure to maintain proper clearance will reult in eriou injury or death. S&C Power Fue From a afe ditance, oberve the blown-fue target for the fue type furnihed (refer to Figure 21): SML-20 Power Fue or Fault Fiter Electronic Power Fue A red blown-fue target project from the top of the SML-20 Power Fue upper end fitting or the Fault Fiter Holder when the fue ha operated... making it eay to check fue condition with the fue in the cloed poition. The blown-fue target retract within the end fitting or holder when the blown fue unit or interrupting module i replaced. SML-4Z Power Fue A fluorecent-orange target in the tranlucent SML-4Z Holder move to the BLOWN indicator window when the fue operate, permitting a poitive viual check of fue condition without removing the fue from it mounting. The target fluorece when illuminated. NOTE ON HANDLING: The current-deign upper end fitting for ue in SML-20 Power Fue, and the Fault Fiter Holder employ a free-floating blown-fue target which can move (by force of gravity) into the BLOWN poition hould the fue be inverted during handling. Fue condition can be verified by returning the fue to the upright poition. If the fue i blown, the target will remain in the extended (projecting) poition. Remove the blown fue from it mounting following the intruction found under Opening and Removing the Fue on page 17 through 20. Then follow the intruction for replacing blown SM-4 Refill Unit, SMU-20 Fue Unit, or Fault Fiter Interrupting Module (a applicable) that are provided with each new refill unit, fue unit, or interrupting module. Page 21 of 33

22 Outdoor Ditribution (14.4 kv and 25 kv) RE-FUSING Continued Current-Limiting Fue To find the blown fue, remove each fue in turn from it mounting (the target cannot be een while the fue i in it mounting), following the intruction found under Opening and Removing the Fue on page 17 through 20. Then inpect the fue and check for a blown-fue target. NOTE: Following a two- or three-phae fault at a three-phae intallation, any unblown fue that carried the fault current hould alo be replaced. For intruction on replacing current-limiting fue in S&C Holder, refer to S&C Intruction Sheet S&C Holder will accommodate the current-limiting fue lited in Appendix E. Intalling the Fue in the Mounting Follow the intruction found under Intalling and Cloing the Fue on page 13 through 16. Red target project from top of upper end fitting when fue ha operated Red target project from top of holder when fue ha operated Fluorecent-orange target appear in BLOWN indicator window when fue ha operated (viible through tranlucent holder) SML-20 Power Fue SML-4Z Power Fue Fault Fiter Electronic Power Fue Figure 21. Blown-fue target location for the fue type ued in PMH model of S&C Pad-Mounted Gear. Page 22 of 33

23 MAINTENANCEa Component No mechanical maintenance i required for S&C Remote Superviory PMH Pad-Mounted Gear. However, occaional inpection of the gear and exerciing of the Mini- Rupter Switche i recommended. Exerciing of Type PM Switch Operator once per year in accordance with EXERCISING AND MAINTENANCE in Intruction Sheet i alo recommended to verify proper functioning of the ytem. In addition, inpection and cleaning of inulator and cable terminator in particular hould be performed periodically, at interval baed on environmental condition. Ç WARNING Before cleaning, completely de-energize, tet, and ground the pad-mounted gear. Never ue preureprayed abraive to clean pad-mounted gear. Preure-prayed abraive will damage witch and fue component. Place dual-purpoe front barrier for witch and fue compartment into the lide-in poition. See Figure 7 and 11. Thi will provide phyical iolation for additional ecurity if it i neceary to work on the cable connected to the Mini-Rupter Switch or fue. Ç DANGER When acce to high-voltage compartment i required for inpection, ervice, or repair, alway oberve the precaution below. Failure to oberve thee precaution will reult in eriou injury or death. 1. Acce to pad-mounted gear mut be retricted only to qualified peron. See Qualified Peron on page Alway follow afe operating procedure and rule. 3. Before touching any device, alway diconnect witche, fue, and other device from all power ource (including backfeed) and control ource, tet for voltage, and properly ground. 4. Alway aume that both et of power terminal on any witch or fue are energized unle proved otherwie by tet, by viual evidence of open-circuit condition on both et of terminal, or by oberving that both et of terminal are grounded. 5. Tet for voltage on both et of power terminal of any witch or fue uing proper high-voltage tet equipment. 6. After the gear ha been completely diconnected from all ource of power and teted for voltage, intall uitable grounding cable in all compartment. 7. For maintenance of non-s&c equipment, follow the manufacturer intruction. 8. Make certain the encloure i properly grounded to the tation or facility ground. Do not return equipment to ervice unle uch ground are properly made. NOTE: Occaionally, low-voltage component may require maintenance. The maintenance of other lowvoltage component iolated from high-voltage compartment may be performed under the afety rule for equipment rated 600 volt or le. If maintenance i to be performed on device connected to the econdary of a voltage enor, hort-circuit the econdary connection. A eparate drawing will be provided with the replacement part explaining how to properly hort-circuit the econdary connection. a Thee recommendation may differ from company operating procedure and rule. Where a dicrepancy exit, uer hould follow their company operating procedure and rule. Page 23 of 33

24 Outdoor Ditribution (14.4 kv and 25 kv) MAINTENANCE Continued Returning Equipment to Service When returning the equipment to ervice, the following procedure hould be oberved: 1. Make ure that witch and fue grounding mean are removed and that the dual-purpoe front barrier are removed from the lide-in poition before cloing the aociated Mini-Rupter Switch or power fue. 2. Make certain that the Mini-Rupter Switche are in the correct poition (open or cloed) a dictated by ytem circumtance. 3. Cloe each door permitting acce to high voltage. Make ure that the aociated Penta-Latch Mechanim are ecurely latched and padlocked before energizing the circuit or operating any witching device. 4. For proper etting of Type PM Switch Operator, refer to FINAL CHECKS BEFORE WALKING AWAY in Intruction Sheet For proper etting of the component furnihed with the communication and control equipment group (Catalog Number Suffix -Y1 ), refer to S&C Intruction Sheet Padlock all door and witch-operating-haft acce cover before leaving the intallation ite, even momentarily. Oberve thi procedure even in thoe cae where the gear i acceible only to qualified peron. Encloure Finih The reponibility for enuring that a finih protect the encloure lie with both the manufacturer and the uer. S&C Remote Superviory PMH Pad-Mounted Gear i finihed with the S&C Ultradur Finihing Sytem, which provide lating protection for the encloure. To retain thi protection, the uer hould take periodic corrective action a follow: 1. Touch up any penetration of the finih to bare metal uch a cratche and abraion due to hipping or vandalim to maintain the original integrity. S&C touch-up finih and primer are available in aerool pray can order by Catalog Number: for olive green finih, for light gray finih, and for red-oxide primer. No other finih or primer i approved. The area to be touched up hould be cleaned to remove all oil and greae. Sand the area, removing any trace of rut that may be preent, and make ure all edge are feathered before applying primer. 2. Provide an occaional imple wahdown uch a an automobile would be given to remove urface contaminant. Ue any ordinary mild houehold detergent olution. In thoe cae where the encloure mut be refinihed by the uer before the finih ha weathered for example, to match other equipment a pecial precaution mut be taken. The entire urface mut be anded to provide a tooth to bond the new coat to the unuually tough and mooth S&C Ultradur Finih. Page 24 of 33

25 APPENDIX A Dielectric Teting When high-voltage dielectric tet are to be performed on S&C Remote Superviory PMH Pad-Mounted Gear, pecial precaution hould be taken to prevent damage to the voltage enor() and voltage limiter. Refer to S&C Intruction Sheet APPENDIX B Rating for S&C Mini-Rupter Switche Complete rating for Mini-Rupter a applied in S&C Remote Superviory PMH Pad-Mounted Gear are hown in the table below. In addition to the load-dropping rating hown, Mini-Rupter i capable of interrupting tranformer magnetizing current aociated with the applicable load, a well a line-charging and cable-charging current typical for ditribution ytem of thee voltage rating. For application on ytem rated higher than 7.2 kv and involving load current with high harmonic content (uch a rectifier load current), refer to the nearet S&C Sale Office. The two-time duty-cycle fault-cloing rating hown for Mini-Rupter define the ability to cloe the Mini-Rupter twice againt a three-phae fault with aymmetrical current in at leat one phae equal to the rated value, with the witch remaining operable and able to carry and interrupt rated current. RATINGS FOR S&C MINI-RUPTER SWITCHES Kv Ampere, Rm Live Switching Nom. Max BIL Cont. Load Splitting (Parallel or Loop Switching) Load Dropping Duty-Cycle Fault-Cloing, Two-Time (Aym.) Momentary (Aym.) 1-Second (Sym.) ,000 ampere rm ymmetrical, 35,000 ampere peak. Page 25 of 33

26 Outdoor Ditribution (14.4 kv and 25 kv) APPENDIX B Continued Rating for S&C Power Fue with Uni-Rupter Complete rating and capabilitie of S&C Power Fue with Uni-Rupter a applied in S&C Remote Superviory PMH Pad-Mounted Gear are hown in the table below. Uni-Rupter i alo capable of carrying and interrupting load current up to and including the emergency peakload capabilitie of the aociated SML Power Fue, or up to 400 ampere at 14.4 kv and 200 ampere at 25 kv when ued with Fault Fiter Electronic Power Fue. In addition to the load-dropping capabilitie hown, Uni- Rupter i capable of interrupting tranformer magnetizing current aociated with the applicable load, a well a line-charging and cable-charging current typical for ditribution ytem of thee voltage rating. The duty-cycle fault-cloing capabilitie hown for S&C Power Fue with Uni-Rupter repreent the fault-cloing capabilitie of the fue with Uni-Rupter when the fue i cloed with a purpoeful thrut without heitation. Following the pecified number of uch cloing (one or two), Uni-Rupter will remain operable and able to carry and interrupt rated current. RATINGS AND CAPABILITIES FOR S&C POWER FUSES WITH UNI-RUPTER Fue Type Kv Rating Nom. Max BIL Max Ampere, Rm Interrupting (Sym.) Load Dropping Live Switching Capabilitie, Ampere, Rm Load Splitting (Parallel or Loop Switching) Duty-Cycle Fault-Cloing (Aym.) One-Time Two-Time SML-20 SML-4Z Fault Fiter E or 200K 200E or 200K E E f f Applicable to olidly grounded-neutral ytem only, with fue connected by ingle-conductor, concentric-neutral-type cable to a tranformer or tranformer. Rating i 9,400 ampere rm ymmetrical for all other application. Page 26 of 33