15-kV Safefront 200 Amp Primary Capacitor Station Pad-Mounted Outdoor
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- Loren Banks
- 6 years ago
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1 Page Heavy-duty 11-gauge steel enclosure is all-welded construction for long life Clear polycarbonate removable safety barrier separates upper and lower compartment (supplied only with internally mounted Capacitor Control) 200 Amp Elliott air-insulated bushing wells accept IEEE Standard inserts and elbows Bushing Wells may be added if circuit requirements change 11-gauge steel equipment plate is rigid for easier elbow operation Elbows compartment label is visible with doors closed Optional Meter Socket or Junction Box Capacitor Control access door (supplied only with internally mounted Capacitor Control) Corrosion proof nameplate is located to provide easy access for the operator Parking stands are unpainted stainless steel and provide space and grounding for feed-thru and other portable devices Superlife finish includes phosphatizing, rust-inhibiting epoxy primer and Pad- Mount Green (Munsell 7GY 3.29/1.5) polyurethane top coat - over 5 mils dry Ventilation baffled inside and outside to provide tamper resistance to meet National and Regional Standards Open bottom and extra depth of elbow compartment provides space for use of feed-thru and other portable devices with the doors open or closed Ground lugs on each wall of the elbow and capacitor compartments accept #6 - #2/0 ground cable Door-holder rods are stainless steel and hold the doors open 100 degrees or 140 degrees ENCLOSURE OPTIONS: 1) #5052H32 Aluminum 2) 12-gauge #304L Stainless Steel
2 Page Removable lift provisions with blind holes for tamper resistance Door safety barrier removal instructions Capacitors compartment label is visible with doors closed Safety latches on the door safety barriers are insulating and require a positive action to remove the safety barrier Stainless steel hinges are welded to the door and the enclosure pins are standard Barrier lift handles are insulating and keyed to prevent rotation Field-Proven Components including Elliott bushing wells specifically designed for "in-air" operation gives you long-term reliable service Standard Cable Training means quick, economical installation and assures proper operation for the life of the equipment Deep Elbow Compartment and careful placement of bushing wells and parking stands makes switching and grounding easier and safer Tamper-Resistant Enclosure meets National and Regional Enclosure Integrity Standards and virtually eliminates the entrance of airborne contamination to reduce maintenance Danger Keep Out! Hazardous voltage Overlapping door and enclosure flanges - with other features - provide tamper resistance to meet national and regional standards Clear polycarbonate sectional door safety barriers (capacitor side only) allow visual inspection without removal Accommodates your preferred Capacitors Cross-kinked roof prevents standing moisture 300-amp copper bus has rounded corners and is deburred for corona-free operation In-Air Insulation eliminates leaking or contamination of insulating medium for long trouble-free operation In-Air Visibility allows visual inspection of all components without the inconvenience or expense associated with equipment which must be de-energized for inspection In-Air Accessibility means every connection may be checked and tightened using hot stick tools without de-energizing the equipment Bolted-Tab Current-Limiting fuse Clip-Mounted Current-Limiting Fuse Accommodates your preferred Oil or Vacuum Switch Prepunched mounting holes accept your preferred brand of transformer Coordinated padlock and penta-head or optional hex-head bolt (top and bottom) provides bolted-door security with visual confirmation by supervisory personnel. Security bolt is made captive with a stainless steel washer compressed to an oval shape to severely discourage removal.
3 Page Fusing Options Group Fuses Only (-GCM5-) Clip-Mounted NX or X-Limiter Style Current-Limiting Fuses Individual Capacitor Fuses Only (-I8-) Bolted-Tab NX or X-Limiter Style Current-Limiting Fuses Group and Individual Capacitor Fuses (-GCM5/I8-)
4 Page Capacitor Control Options Externally mounted socket (without Capacitor Control) is optional. Internally mounted socket (without Capacitor Control) is optional. Clear polycarbonate safety barrier prevents access to elbows through Capacitor Control access door. Ventilation baffled inside and outside to provide tamper resistance to meet National and Regional Standards. Open-pore foam prevents entrance of insects.
5 Page Standard Cable Training The Phase-Isolated Safefront Capacitor Stations shown in this were designed to employ the cable training shown in the drawing to the right. Common bushing well locations provide the advantage of standard cable training and pad dimensions for all circuits. Capacitor Stations with one circuit arrangement can be replaced by Capacitor Stations with a different circuit arrangement and the existing cables need not be reterminated. The equipment plate is punched to accept six bushing wells with bushing-style insulators or adapter plates covering the mounting holes not in use. Bushing wells can be added or removed in the field using only standard tools. There is no need to drill or punch holes when modification is required. Generous space is provided at every parking stand to allow use of a parking or feed-thru accessary. Installation as shown on the recommended Cable Training drawings (in this ) assures your operator they can perform all switching operations. Selecting Capacitor Stations The Safefront s shown in the circuit diagrams below are rated 8.3/14.4 kv Grounded Wye Maximum design. Dimension drawings and recommended cable training for each design can be found on page 6 through 13 of this bulletin. The continuous-current rating of the bushing well is 200 amperes with an eight hour overload rating of 300 amperes. Elliott Air-Insulated Bushing Wells are designed for in-air operation and accept Elastimold, Eaton s Cooper Power Systems and other 15 kv Class IEEE Standard loadbreak bushing inserts and elbow terminators. All loadbreak or loadmake operations must be accomplished with the oil or vacuum switches (elbows should not be operated to loadbreak capacitor current). Four ground connectors, which accept #6 through #2/0 cable, are included and installed as shown by the drawings. -310P-E2-GCM P-E2-GCM P-E2-GCM5/I P-E2-I P-E2-GCM5/I P-E2-I8- Safefront (elbow-terminated) s are available for 600 amperes and voltage ratings including 35 kv. If you do not find a model to fit your needs, please contact our representative or the factory.
6 Page Cable Training and Anchor Bolt Locations Front View Doors Removed Alternate #1 Alternate #2 Section BB and Typical Pad Dimensions Catalog Number Bushings per phase Fuses Capacitor Control Provision EPM-PCS P-E2-GCM5-2S-CCE 1 Group Fuses External Socket EPM-PCS P-E2-I8-2S-CCE 1 Individual Fuses External Socket EPM-PCS P-E2-GCM5/I8-2S-CCE 1 Group and Individual External Socket
7 Page Three Phase One Way per Phase 200 Amp Elliott Air-Insulated Bushing Wells 8.3/14.4 kv Grounded Wye Max Design 95 kv BIL Front View Doors Removed Rear View Doors & Door Safety Barriers Removed Elliott Air-Insulated Bushing Wells Section BB Bushing wells may be added if circuit requirements change - see page 18 in this bulletin. Section AA Capacitor omitted when only one capacitor per phase. Catalog Number Bushings per phase Fuses Capacitor Control Provision EPM-PCS P-E2-GCM5-2S-CCE 1 Group Fuses External Socket EPM-PCS P-E2-I8-2S-CCE 1 Individual Fuses External Socket EPM-PCS P-E2-GCM5/I8-2S-CCE 1 Group and Individual External Socket
8 Page Cable Training and Anchor Bolt Locations Front View Doors Removed Alternate #1 Alternate #2 Section BB and Typical Pad Dimensions Catalog Number Bushings per phase Fuses Capacitor Control Provision EPM-PCS P-E2-GCM5-2S-CCD 1 Group Fuses Internal Socket with Outside Door EPM-PCS P-E2-I8-2S-CCD 1 Individual Fuses Internal Socket with Outside Door EPM-PCS P-E2-GCM5/I8-2S-CCD 1 Group and Individual Internal Socket with Outside Door
9 Page Three Phase One Way per Phase 200 Amp Elliott Air-Insulated Bushing Wells 8.3/14.4 kv Grounded Wye Max Design 95 kv BIL Front View Doors Removed Rear View Doors & Door Safety Barriers Removed Elliott Air-Insulated Bushing Wells Section BB Bushing wells may be added if circuit requirements change - see page 18 in this bulletin. Section AA Capacitor omitted when only one capacitor per phase. Catalog Number Bushings per phase Fuses Capacitor Control Provision EPM-PCS P-E2-GCM5-2S-CCD 1 Group Fuses Internal Socket with Outside Door EPM-PCS P-E2-I8-2S-CCD 1 Individual Fuses Internal Socket with Outside Door EPM-PCS P-E2-GCM5/I8-2S-CCD 1 Group and Individual Internal Socket with Outside Door
10 Page Cable Training and Anchor Bolt Locations Front View Doors Removed Alternate #1 Alternate #2 Section BB and Typical Pad Dimensions Catalog Number Bushings per phase Fuses Capacitor Control Provision EPM-PCS P-E2-GCM5-2S-CCE 2 Group Fuses External Socket EPM-PCS P-E2-I8-2S-CCE 2 Individual Fuses External Socket EPM-PCS P-E2-GCM5/I8-2S-CCE 2 Group and Individual External Socket
11 Page Three Phase Two Ways per Phase 200 Amp Elliott Air-Insulated Bushing Wells 8.3/14.4 kv Grounded Wye Max Design 95 kv BIL Front View Doors Removed Rear View Doors & Door Safety Barriers Removed Elliott Air-Insulated Bushing Wells Section BB Section AA Capacitor omitted when only one capacitor per phase. Catalog Number Bushings per phase Fuses Capacitor Control Provision EPM-PCS P-E2-GCM5-2S-CCE 2 Group Fuses External Socket EPM-PCS P-E2-I8-2S-CCE 2 Individual Fuses External Socket EPM-PCS P-E2-GCM5/I8-2S-CCE 2 Group and Individual External Socket
12 Page Cable Training and Anchor Bolt Locations Front View Doors Removed Alternate #1 Alternate #2 Section BB and Typical Pad Dimensions Catalog Number Bushings per phase Fuses Capacitor Control Provision EPM-PCS P-E2-GCM5-2S-CCD 2 Group Fuses Internal Socket with Outside Door EPM-PCS P-E2-I8-2S-CCD 2 Individual Fuses Internal Socket with Outside Door EPM-PCS P-E2-GCM5/I8-2S-CCD 2 Group and Individual Internal Socket with Outside Door
13 Page Three Phase Two Ways per Phase 200 Amp Elliott Air-Insulated Bushing Wells 8.3/14.4 kv Grounded Wye Max Design 95 kv BIL Front View Doors Removed Rear View Doors & Door Safety Barriers Removed Elliott Air-Insulated Bushing Wells Section BB Section AA Capacitor omitted when only one capacitor per phase. Catalog Number Bushings per phase Fuses Capacitor Control Provision EPM-PCS P-E2-GCM5-2S-CCD 2 Group Fuses Internal Socket with Outside Door EPM-PCS P-E2-I8-2S-CCD 2 Individual Fuses Internal Socket with Outside Door EPM-PCS P-E2-GCM5/I8-2S-CCD 2 Group and Individual Internal Socket with Outside Door
14 Page Typical Specification - Page 1 of 4 General The primary capacitor station shall be 15 kv class, 95 kv BIL, 200 ampere continuous current, suitable for use on 8.3/14.4 kv grounded wye max design systems. The capacitor station shall be constructed for connection to the utility system with loadbreak separable insulated connectors as described in IEEE Standard 386 latest revision (separable insulated connectors and loadbreak inserts shall be supplied by the user). The capacitor station shall be designed for and contain (or accept) fuses, switches, control power transformer and standard outdoor single-phase capacitors in a compartment separated from the elbow compartment by a steel equipment plate. Separate access shall be provided for each compartment. A door safety barrier shall be provided inside the door(s) on the capacitor compartment as recommended in IEEE Standard C2 (National Electrical Safety Code) Rule 381G. Tamper resistance shall meet the Enclosure Security requirements of IEEE Standard C (Pad-Mounted Equipment Enclosure Integrity). Together, the tamper resistance and the door safety barrier shall resist unauthorized entry, protect authorized and unauthorized persons, and provide positive safety features when installed in areas accessible to the general public. The primary capacitor station shall be constructed for outdoor installation in areas subject to heavy precipitation and in areas with windblown contamination. The equipment shall be air-insulated and completely assembled prior to shipment. Enclosure Construction The enclosure shall be tamper-resistant, all-welded construction utilizing 11-gauge minimum sheet steel. Corner plates and braces shall be used as necessary to assure rigidity. The enclosure top shall be cross-kinked to provide watershed and rigidity. The enclosure shall be open bottom with a 1-inch flange inside, all around. Separate compartments shall be provided for cable termination and for capacitor equipment each compartment equipped with its own individual access door(s) furnished with a stainless steel door holder that will latch the door open 100 degrees and 140 degrees and resist accidental closing. The equipment plate separating the two compartments shall be full length, constructed with 11-gauge minimum sheet steel braced to assure rigidity when operating the elbows. Doors shall be provided with provisions for padlocking and a recessed penta-head (or hex-head) security bolt to prevent unauthorized entry (coordinated to prevent installation of the padlock until the security bolt is tightened when closing the door(s) and to prevent a wrench from operating the security bolt until the padlock is removed when opening the door(s)). The security bolt shall be made captive with a stainless steel washer compressed to an oval shape to severely discourage removal. Hinges shall be stainless steel (with stainless steel pins not less than inch diameter) and shall be welded to both the enclosure and the door(s) to maintain door alignment for the life of the equipment. The control power transformer mounting plate shall be constructed with 11-gauge minimum sheet steel formed and reinforced to provide proper support for the transformer installed (or to be installed) thereon. The mounting plate shall be punched with a pattern of holes that accept installation of all NEMA Standard outdoor instrument transformers without the need to punch or drill additional holes. The pattern of holes shall be located to place the transformer in a position that provides proper electrical clearance. A inch diameter cable-lacing rod shall be welded to the front edge of the transformer mounting plate and on both inside walls of the capacitor compartment (with stand-off clearance of 0.75-inch) to provide support for secondary wiring. Ventilation, which meets the tamper resistance requirements of IEEE Standard C , shall be provided in the top and bottom sill of the elbow compartment side of the enclosure and in the top and bottom sill of the capacitor equipment compartment side of the enclosure. Open-pore filter foam shall be installed in the outermost ventilation area to prevent entry of wildlife including wasps and similar size insects. The protective finish shall include necessary grinding, cleaning and phosphatizing, two-component rust-inhibiting epoxy primer and a Pad-Mount Green two-component polyurethane top coat finish (Munsell color 7GY 3.29/1.5). The primer and top coat shall be electronically monitored during application to insure proper ratio and mixing of each component. Total average thickness of paint (after curing) shall be not less than 5 mils. The protective coating shall meet the Enclosure Coating System requirements of IEEE Standard C (Pad-Mounted Equipment Enclosure Integrity). Removable lift provisions, adequate to withstand handling with normal utility equipment, shall be provided on the outside of the enclosure. Threaded openings for lift provision bolts shall be blind holes to prevent the entrance of wire or other foreign objects into the enclosure when lift provisions are removed. Bushings and Terminals Bushings shall be 200 ampere Elliott # B, 25 kv class (15.2 kv to ground) Air-Insulated Bushing Wells, 125 kv BIL, per IEEE Standard 386 Fig. 3 (200 A Bushing Well Interface, 8.3 kv, 15.2 kv and 21.1 kv) for use with either 8.3/14.4 kv or 15.2/26.3 kv separable insulated connectors (Elastimold, Eaton s Cooper Power Systems or other approved equal). The bushing wells shall be pressure-molded cycloaliphatic epoxy with a 0.75-inch diameter copper conductor on the air-insulated side that is drilled and tapped inch 16UNC x 1-inch deep to provide direct connection of the bus and/or live parts. Leakage distance from the apparatus connection end of the bushing well to ground shall be not less than 30 inches
15 Page Typical Specification - Page 2 of 4 to assure trouble-free operation in a wet and/or contaminated environment. Integral shielding shall be provided to eliminate partial discharge caused by off-center mounting and mounting holes that may have sharp edges or burrs. Bushing wells shall mount in a inch diameter opening and bolt in place to allow field replacement with standard tools. The bushing well mounting bolts shall be self-locking stainless steel serrated-flange hex-head bolts that cut through the enclosure protective finish to ground the integral shielding of each bushing well. The head of one or more of the mounting bolts for each bushing well shall include a inch diameter hole to provide a connection to ground for the loadbreak insert shielding ground wire as recommended by separable insulated connector manufacturers. To assure adequate strength for apparatus support, the bushing well shall withstand a minimum cantilever loading of 600 pounds for five minutes without damage. The bushing well interface shall be free of all voids, holes and heat sinks to assure proper mating with separable insulated connectors. Each bushing well shall be tested in free air, mounted in a grounded steel plate not less than 10 inches x 10 inches, with a bushing well plug (Eaton s Cooper Power Systems #IBWP225 or equal) installed in the well interface to accurately simulate operating conditions (gas or liquid dielectric in the interface shall not be acceptable for this test). Each bushing well shall meet the requirements for 25 kv devices in accordance with IEEE Standard 386 (latest revision), including 100 percent production testing. Bus and Fuse Mountings Bus shall be copper with all burrs and sharp corners removed prior to installation. Fuse clips and/or fuse hinges shall be keyed to prevent rotation and to maintain alignment. Positive pressure shall be assured by use of stainless steel fasteners and lock washers or compression washers at all connection points. All connections shall provide direct contact of current-carrying parts and shall not depend on current transfer through fastener thread-to-thread contact. Fuses and their blown-fuse indicators shall be visible (when the capacitor compartment door(s) are open) without removal of the clear-polycarbonate door safety barrier to allow easy identification of blown fuses without de-energizing or removing the fuse from service. Electrical components shall be air-insulated and positioned to allow visual inspection of all internal connections and components without removing the clear-polycarbonate door safety barrier, de-energizing or removing the equipment from service. Alternate 1: Group Fuses Only Fuse mountings shall be Mounting Code 5 to accept 1.5 amp to 100 amp (max), 8.3 kv Eaton s Cooper Power Systems NX and 6 amp to 140 amp (max), 8.3 kv Eaton s Cooper Power Systems X-Limiter clip-mounted current-limiting fuses. When 1.5 amp to 40 amp 8.3 kv Code 4 fuses are supplied, one Elliott Industries #3901-CM4-5 fuse extender per fuse shall be supplied to extend the Code 4 fuse length to fit Mounting Code 5 fuse mountings. A Danger Sign, Elliott #7203-D , shall be provided in a prominent location near the fuse clips to warn the operator Do not remove fuse under load. Alternate 2: Individual Fuses Only Each capacitor shall be fused with a 6 amp to 140 amp (max), 8.3 kv Eaton s Cooper Power Systems bolted-tab X-Limiter current-limiting fuse. A Danger Sign, Elliott #7203-D , shall be provided in a prominent location near the fuses to warn the operator Do not remove fuse under load. Alternate 3: Group and Individual Fuses Fuse mountings for group fuses shall be Mounting Code 5 to accept 1.5 amp to 100 amp (max), 8.3 kv Eaton s Cooper Power Systems NX and 6 amp to 140 amp (max), 8.3 kv Eaton s Cooper Power Systems X-Limiter clip-mounted current-limiting fuses. When 1.5 amp to 40 amp 8.3 kv Code 4 fuses are supplied, one Elliott Industries #3901-CM4-5 fuse extender per fuse shall be supplied to extend the Code 4 fuse length to fit Mounting Code 5 fuse mountings. In addition each capacitor shall be fused with a 6 amp to 140 amp (max), 8.3 kv Eaton s Cooper Power Systems bolted-tab X-Limiter current-limiting fuse. A Danger Sign, Elliott #7203-D , shall be provided in a prominent location near the fuse clips of the group fuses and near the individual fuses to warn the operator Do not remove fuse under load. Capacitors NEMA Standard outdoor single-phase, 60 hertz, 95 kv BIL individual capacitors shall be supplied bolted in place and positioned in a manner that will allow replacement without removal of other major components if maintenance is required. The capacitors shall be constructed with all-film insulation impregnated with non-pcb liquid dielectric and include one insulated primary bushing (alternate two insulated primary bushings). The capacitors shall be rated 50 kvar, 100 kvar, 150 kvar, 200 kvar, or 300 kvar at 6,640 volts, 7,200 volts, 7,620 volts, 7,960 volts or 8,320 volts and shall be connected grounded wye for operation on a four-wire grounded wye system. Oil or Vacuum Switches Alternate 1: The oil switches shall be standard outdoor single-phase Trinetics Type CSD-95 (rated 14.4 kv and 95 kv BIL) capable of switching three-phase capacitor banks up to 3,600 kvar on 14.4 kv (line-to-line) systems. The switch shall be motor-operated with 120 volts AC. The 5-pin receptacle shall accept a 5-pin plug (#6714) installed on a
16 Page Typical Specification - Page 3 of 4 three-conductor cable, factory connected to the open, close and neutral terminals of a four-terminal meter socket (suitable for field installation of a socket-mounted capacitor control). The three oil switches shall be mounted and positioned so the manual operating handle is visible without entering the enclosure and is accessible for hook-stick operation in the event the switches fail to operate electrically. To facilitate maintenance, the switches shall be located so they can be removed and replaced without disturbing other components in the capacitor compartment. Alternate 2: The oil switches shall be standard outdoor single-phase Eaton s Cooper Power Systems Type NR (rated 14.4 kv and 95 kv BIL) capable of switching three-phase capacitor banks up to 3,600 kvar on 14.4 kv (line-to-line) systems. The switch shall be motor-operated with 120 volts AC. The 5-pin receptacle (#KA121NR5) shall accept a 5-pin plug (#KA48NR) installed on a three-conductor cable, factory connected to the open, close and neutral terminals of a four-terminal meter socket (suitable for field installation of a socket-mounted capacitor control). The three oil switches shall be mounted and positioned so the manual operating handle is visible without entering the enclosure and is accessible for hook-stick operation in the event the switches fail to operate electrically. To facilitate maintenance, the switches shall be located so they can be removed and replaced without disturbing other components in the capacitor compartment. Alternate 3: The oil switches shall be standard outdoor single-phase General Electric Type FKC-2 (rated 14.4 kv and 95 kv BIL) capable of switching three-phase capacitor banks up to 3,600 kvar on 14.4 kv (line-to-line) systems. The switch shall be motor-operated with 120 volts AC. The 5-pin receptacle shall accept a 5-pin plug (#9F90AAW027) installed on a three-conductor cable, factory connected to the open, close and neutral terminals of a four-terminal meter socket (suitable for field installation of a socket-mounted capacitor control). The three oil switches shall be mounted and positioned so the manual operating handle is visible without entering the enclosure and is accessible for hook-stick operation in the event the switches fail to operate electrically. To facilitate maintenance, the switches shall be located so they can be removed and replaced without disturbing other components in the capacitor compartment. Alternate 4: The vacuum switches shall be standard outdoor single-phase [consult the factory for available vacuum switches] (rated 14.4 kv and 95 kv BIL) capable of switching three-phase capacitor banks up to 3,600 kvar on 14.4 kv (line-to-line) systems. The switch shall be motor-operated with 120 volts AC. The 5-pin receptacle shall accept a 5-pin plug (#9F90AAW027) installed on a three-conductor cable, factory connected to the open, close and neutral terminals of a four-terminal meter socket (suitable for field installation of a socket-mounted capacitor control). The three vacuum switches shall be mounted and positioned so the manual operating handle is visible without entering the enclosure and is accessible for hook-stick operation in the event the switches fail to operate electrically. To facilitate maintenance the switches shall be located so they can be removed and replaced without disturbing other components in the capacitor compartment. Control Power Transformer Alternate 1: The control power transformer shall be 15 kv class to provide 120 volts and 600 VA to operate the oil switches and capacitor control. The primary of the transformer shall connect to the C-phase bus with #6 stranded copper THWN. The secondary of the transformer shall be factory connected to the hot and neutral terminals of the four-jaw meter socket (or when specified, to the hot and neutral terminals in the junction box). Alternate 2: The control power transformer shall be 15 kv class to provide 120 volts and 1,000 VA to operate the oil or vacuum switches and capacitor control. The primary of the transformer shall connect to the C-phase bus with #6 stranded copper THWN. The secondary of the transformer shall be factory connected to the hot and neutral terminals of the four-jaw meter socket (or when specified, to the hot and neutral terminals in the junction box). Meter Socket for Capacitor Control Alternate 1: When specified, the meter socket shall be four-terminal, 100 amp, with two 1-inch hubs. The socket shall be wired complete and factory-mounted on the exterior of the enclosure. An MR-1 screw-type sealing ring shall be furnished with the socket. Alternate 2: When specified, the meter socket shall be four-terminal, 100 amp, wired complete and mounted on the equipment plate above the elbows. To enable the operator to access the control without opening the elbow compartment door(s), a capacitor control access door shall be provided (furnished with a stainless steel door holder that will latch the door open 100 degrees and 140 degrees and resist accidental closing). The access door shall be provided with provision for a padlock and a recessed penta-head (or hex-head) security bolt to prevent unauthorized entry. The security bolt shall be made captive with a stainless steel washer compressed to an oval shape to severely discourage removal. Hinges shall be stainless steel (with stainless steel pins not less than inch diameter) and shall be welded to both the enclosure and the access door to maintain door alignment for the life of the equipment. Tamper resistance shall meet or exceed the requirements of IEEE Standard C (Pad-Mounted Equipment Enclosure Integrity). To prevent inadvertent access to the elbows and cables through the
17 Page Typical Specification - Page 4 of 4 capacitor control access door, a clear-polycarbonate (Lexan or equal) safety barrier shall be provided to separate the control section from the elbow section of this compartment. This safety barrier shall be removable (without the use of tools) only when the main elbow compartment doors are open. Alternate 3: When specified, a junction box shall be supplied in place of the meter socket described in Alternate 1 and Alternate 2. The junction box shall be located as specified by the user. Barriers Phase and ground barriers shall be provided to assure correct phase-to-phase and phase-to-ground clearances for proper operation at rated voltage. These barriers shall be glass-reinforced polyester (NEMA GPO-3 class material) not less than inch thick. For each phase, a removable insulating barrier with a DANGER Keep Out! Hazardous voltage sign, Elliott #7203-D , shall be located inside the door(s) on the capacitor compartment as recommended in Rule 381G of IEEE Standard C2 (National Electrical Safety Code). These sectional door safety barriers shall be constructed of 0.25-inch clear-polycarbonate (Lexan or equal) and shall completely close the opening to each phase. Each barrier shall be provided with a nonconductive safety latch requiring a positive action to remove the barrier. Handles and other hardware extending through the door safety barriers shall be nonconductive material. Handles shall be keyed to prevent rotation for secure handling. Complete visual inspection of the internal components shall be possible without removing the door safety barrier. Grounding Provisions Four high-conductivity bronze eyebolt-type ground lugs, which accept #6 through #2/0 copper conductor, shall be installed two in the cable terminating compartment and two in the primary capacitor compartment on each side of the door opening in an accessible position (as shown on the drawings). Accessory Equipment Stainless steel parking stands shall be provided in the quantity required to allow use of feed-thru bushings, parking bushings and grounding bushings. The parking stands shall be welded in place, in a position to allow the use of hot-line tools for installation of feed-thru bushings, etc. The parking stands shall be unpainted (except welds shall be painted) to provide a ground for feed-thru bushings and other devices that may be placed into the parking stands. A corrosion proof nameplate with permanent thermal transfer printing shall be installed inside one door on the elbow compartment. It shall be located at the top corner farthest from the elbows when the door is open. The nameplate will provide Type of Equipment, Model Number, Amps Continuous, kv Maximum, BIL, Serial Number, Job Number, Date Manufactured and Weight of Equipment. Bus and primary capacitor connections between bushings shall be displayed (on the elbow side of the equipment plate) using 0.5-inch-wide solid orange-color pressure-sensitive vinyl tape. Switches, fuses and capacitors shall be indicated with vinyl labels using letters not less than inch nor more than inch high. The resulting schematic shall clearly indicate the circuit arrangement of the capacitor station. The schematic shall be legible at a distance of six feet or more. Alternate 1: A Warning Sign, Elliott #7201-W , shall be provided in two prominent locations (on the elbow side of the equipment plate) near the bushing wells to warn the operator Do not operate elbows unless Oil Switches are open. Alternate 2: A Warning Sign, Elliott #7201-W , shall be provided in two prominent locations (on the elbow side of the equipment plate) near the bushing wells to warn the operator Do not operate elbows unless Vacuum Switches are open. When enclosures have more than one door (or other access provision) each access shall be labeled in near proximity of the locking provisions with a pressure-sensitive vinyl label using letters not less than inch nor more than inch high. The label shall indicate the type of equipment behind the access (elbows, capacitors, etc.). When specified, four anchor-bolt brackets, Elliott #6102-A81-7 or approved equal, shall be supplied with each capacitor station to provide a means of clamping the equipment to the concrete pad. Packaging Each capacitor station shall be bolted to a solid-top wood pallet (to prevent the forks of a forklift truck from entering the open bottom of the equipment) to prevent hidden damage. The equipment shall be wrapped with inch thick polyethylene foam or other suitable material to minimize damage to the finish during shipment. Drawings When specified, drawings shall be furnished for each capacitor station that include: 1) enclosure dimensions and location of components. 2) proposed cable-training layout and dimensions. 3) proposed pad dimensions and location of anchor bolts.
18 Page Bushing Well Installation Instructions The primary capacitor stations shown in this bulletin have equipment plates punched to accept six bushing wells. When you purchase a primary capacitor station requiring less than six bushing wells, the extra mounting holes are closed with bushing-style insulators or adapter plates. If circuit requirements change, bushing wells can be added or removed to provide the circuit arrangements shown in this bulletin. The mounting hardware used to mount the bushing-style insulator or adapter plate is the same hardware used to install a bushing well. There is no need to drill holes when modification is required. NOTE: The primary capacitor staion must be de-energized and grounded in accordance with your company s normal safety procedure before any modifications are made. Procedure for Bushing Well Installation NOTE: The shipping cap on the bushing well should be left in place to prevent contamination of the interface. 1. Remove the bolt which fastens the bus bar to the bushing-style insulator. 2. On the opposite end of the bus bar, loosen the bolt that fastens the bus bar to the bushing well. The bus bar will then drop down so the bushing-style insulator or adapter plate can be easily removed. 3. Remove the bushing-style insulator or adapter plate from the equipment plate (retain for future use). 4. Install the bushing well into the mounting hole from the capacitor side of the equipment mounting plate. 5. Install the serrated-flange bolts. Bolts should be tightened in a uniform manner applying no more than 90 inch-pounds torque to each bolt. The serrated-flange bolts must cut into the mounting plate to provide a connection from the shielding to the grounded equipment mounting plate. 6. Connect the copper bus bar to the bushing well just installed using hardware previously removed. 7. Tighten the bolt on both ends of the bus bar no more than 216 inch-pounds. IMPORTANT: Do not energize this bushing well with only the shipping cap in place. To do so would lead to failure of the bushing well and create a hazard to operating personnel. This product is designed to be used only when it is mated with an appropriate 15 kv class bushing insert and elbow conforming to the latest revision of IEEE Standard 386. The bushing insert and elbow should be installed in accordance with the instructions supplied by the connector manufacturer.
19 Page Components Selection Any brand of capacitors, oil or vacuum switches and control power transformers may be used in Elliott Safefront Primary Capacitor Stations shown in this bulletin. Capacitor Stations may be ordered with or without capacitors, oil or vacuum switches or transformers. When ordering capacitors, oil or vacuum switches and transformers, specify: 1) Preferred Brands 2) Capacitor kvar and Voltage 3) Transformer Voltage Capacitor mounting accommodates one or two capacitors of your preferred brand. Oil switch mounting provision accommodates your preferred brand. Vacuum switch mounting provision may vary to accomodate your preferred brand. Prepunched mounting holes accept your preferred brand of transformer to provide control power for the capacitor control and oil or vacuum switches.
20 Page If you do not find the design you need PLEASE CONTACT our REPRESENTATIVE or the FACTORY
35-kV Safefront SuperWell Mini-Switch Source Isolated Pad-Mounted Switchgear 50 Amp (Max) Clip-Mounted Current Limiting Fuses
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